swan canning catchments data report · 2015-11-17 · this project was funded by the government of...
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Swan Canning catchments data report
2nd Quarter: January - June 2015
Looking after all our water needs
Department of Water Technical Report prepared for the Department of Parks and
Wildlife, Rivers and Estuaries Division
September 2015
Department of Water
168 St Georges Terrace
Perth, Western Australia 6000
Telephone +61 8 6364 7600
Facsimile +61 8 6364 7601
www.water.wa.gov.au
© Government of Western Australia 2015
September 2015
This work is copyright. You may download, display, print and reproduce
this material in unaltered form only (retaining this notice) for your personal, non-
commercial use or use within your organisation. Apart from any use as permitted
under the Copyright Act 1968, all other rights are reserved. Requests and inquiries
concerning reproduction and rights should be addressed to the Department of Water.
Acknowledgements
This project was funded by the Government of Western Australia through the
Department of Parks and Wildlife Rivers and Estuaries Divisions and the Department
of Water.
For more information about this report, contact:
Dominic Heald (Environmental Officer),
Water Science Branch.
Swan Canning Catchment Data Report January - June 2015
Contents Preface ...................................................................................................................... 13
Summary ................................................................................................................... 19
1 Avon R (SWN5) ................................................................................................ 20
2 Bannister Ck (SWS2) ........................................................................................ 27
3 Bayswater MD (SWS10) ................................................................................... 34
4 Bennett Bk (SWN12) ........................................................................................ 41
5 Bickley Bk (SWS4) ............................................................................................ 48
6 Blackadder Ck (SWN8) ..................................................................................... 55
7 Canning R (SWS12) ......................................................................................... 62
8 Ellen Bk (SWN3) ............................................................................................... 69
9 Helena R (SWN10) ........................................................................................... 76
10 Jane Bk (SWN7) ............................................................................................... 83
11 Mills Street MD (SWS1) .................................................................................... 90
12 S. Belmont MD (SWS13) .................................................................................. 97
13 Southern R (SWS7) ........................................................................................ 104
14 Susannah Bk (SWN11) ................................................................................... 111
15 Yule Bk (SWS3) .............................................................................................. 118
16 SWANCATCH/SCWQIP data comparison ...................................................... 125
17 Perth rainfall.................................................................................................... 127
Tables
Table 1 SWANCATCH Swan and Canning Catchment site coordinates. ................................... 15
Table 2 SCWQIP Swan and Canning Catchment site coordinates. ............................................ 16
Table 3 Swan and Canning Catchment sampling regime. .......................................................... 18
Table 4 2015 monthly sample numbers, minimum and maximum values at site SWN5 (Avon R). ......................................................................................................................... 25
Table 5 2015 monthly sample numbers, minimum and maximum values at SWS2 (Bannister Ck). ................................................................................................................ 32
Table 6 2015 monthly sample numbers, minimum and maximum values at SWS10 (Bayswater MD). ............................................................................................................. 39
Table 7 2015 monthly sample numbers, minimum and maximum values at SWN12 (Bennett Bk). ................................................................................................................... 46
Table 8 2015 monthly sample numbers, minimum and maximum values at SWS4 (Bickley Bk). .................................................................................................................................. 53
Table 9 2015 monthly sample numbers, minimum and maximum values at SWN8 (Blackadder Ck). ............................................................................................................. 60
Table 10 2015 monthly sample numbers, minimum and maximum values at SWS12 (Canning R)..................................................................................................................... 67
Swan Canning Catchment Data Report January - June 2015
4 Department of Water
Table 11 2015 monthly sample numbers, minimum and maximum values at SWN3 (Ellen Bk). .................................................................................................................................. 74
Table 12 2015 monthly sample numbers, minimum and maximum values at SWN10 (Helena R)....................................................................................................................... 81
Table 13 2015 monthly sample numbers, minimum and maximum values at SWN7 (Jane Bk). .................................................................................................................................. 88
Table 14 2015 monthly sample numbers, minimum and maximum values at SWS1 (Mills St MD). ................................................................................................................................ 95
Table 15 2015 monthly sample numbers, minimum and maximum values at SWS13 (S. Belmont MD). ................................................................................................................ 102
Table 16 2015 monthly sample numbers, minimum and maximum values at SWS7 (Southern R). ................................................................................................................ 109
Table 17 2015 monthly sample numbers, minimum and maximum values at SWN11 (Susannah Bk). ............................................................................................................. 116
Table 18 2015 monthly sample numbers, minimum and maximum values at SWS3 (Yule Bk). ................................................................................................................................ 123
Table 19 2015 first and second quarter (Jan - June) mean ± standard deviation for all SWANCATCH (bold font) and SCWQIP (regular font) sites. ....................................... 125
Figures
Figure 1 Map of Swan and Canning Catchment routine monitoring sites. ................................... 17
Figure 2 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN5 (Avon R). ............... 20
Figure 3 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN5
(Avon R). ......................................................................................................................... 20
Figure 4 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN5
(Avon R). ......................................................................................................................... 21
Figure 5 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site
SWN5 (Avon R). ............................................................................................................. 21
Figure 6 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN5 (Avon R). ......... 22
Figure 7 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site
SWN5 (Avon R). ............................................................................................................. 22
Figure 8 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site
SWN5 (Avon R). ............................................................................................................. 23
Figure 9 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN5
(Avon R). ......................................................................................................................... 23
Figure 10 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN5 (Avon R). ......... 24
Figure 11 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN5 (Avon R). ......... 24
Figure 12 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS2 (Bannister Ck). ....... 27
Figure 13 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS2
(Bannister Ck). ................................................................................................................ 27
Swan Canning Catchment Data Report January - June 2015
Figure 14 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS2
(Bannister Ck). ................................................................................................................ 28
Figure 15 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS2
(Bannister Ck). ................................................................................................................ 28
Figure 16 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS2 (Bannister
Ck). ................................................................................................................................. 29
Figure 17 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS2
(Bannister Ck). ................................................................................................................ 29
Figure 18 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS2
(Bannister Ck). ................................................................................................................ 30
Figure 19 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS2
(Bannister Ck). ................................................................................................................ 30
Figure 20 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS2 (Bannister
Ck). ................................................................................................................................. 31
Figure 21 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS2 (Bannister
Ck). ................................................................................................................................. 31
Figure 22 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS10 (Bayswater
MD). ................................................................................................................................ 34
Figure 23 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS10
(Bayswater MD). ............................................................................................................. 34
Figure 24 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS10
(Bayswater MD). ............................................................................................................. 35
Figure 25 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS10
(Bayswater MD). ............................................................................................................. 35
Figure 26 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS10
(Bayswater MD). ............................................................................................................. 36
Figure 27 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS10
(Bayswater MD). ............................................................................................................. 36
Figure 28 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS10
(Bayswater MD). ............................................................................................................. 37
Figure 29 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS10
(Bayswater MD). ............................................................................................................. 37
Figure 30 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS10
(Bayswater MD). ............................................................................................................. 38
Figure 31 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS10
(Bayswater MD). ............................................................................................................. 38
Figure 32 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN12 (Bennett Bk)......... 41
Swan Canning Catchment Data Report January - June 2015
6 Department of Water
Figure 33 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN12
(Bennett Bk). ................................................................................................................... 41
Figure 34 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN12
(Bennett Bk). ................................................................................................................... 42
Figure 35 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN12
(Bennett Bk). ................................................................................................................... 42
Figure 36 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN12 (Bennett
Bk). .................................................................................................................................. 43
Figure 37 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN12
(Bennett Bk). ................................................................................................................... 43
Figure 38 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN12
(Bennett Bk). ................................................................................................................... 44
Figure 39 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN12
(Bennett Bk). ................................................................................................................... 44
Figure 40 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN12 (Bennett
Bk). .................................................................................................................................. 45
Figure 41 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN12 (Bennett
Bk). .................................................................................................................................. 45
Figure 42 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS4 (Bickley Bk). ........... 48
Figure 43 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS4
(Bickley Bk). .................................................................................................................... 48
Figure 44 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS4
(Bickley Bk). .................................................................................................................... 49
Figure 45 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS4
(Bickley Bk). .................................................................................................................... 49
Figure 46 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS4 (Bickley
Bk). .................................................................................................................................. 50
Figure 47 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS4
(Bickley Bk). .................................................................................................................... 50
Figure 48 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS4
(Bickley Bk). .................................................................................................................... 51
Figure 49 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS4
(Bickley Bk). .................................................................................................................... 51
Figure 50 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS4 (Bickley
Bk). .................................................................................................................................. 52
Figure 51 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS4 (Bickley
Bk). .................................................................................................................................. 52
Swan Canning Catchment Data Report January - June 2015
Figure 52 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN8 (Blackadder
Ck). ................................................................................................................................. 55
Figure 53 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN8
(Blackadder Ck). ............................................................................................................. 55
Figure 54 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN8
(Blackadder Ck). ............................................................................................................. 56
Figure 55 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN8
(Blackadder Ck). ............................................................................................................. 56
Figure 56 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN8
(Blackadder Ck). ............................................................................................................. 57
Figure 57 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN8
(Blackadder Ck). ............................................................................................................. 57
Figure 58 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN8
(Blackadder Ck). ............................................................................................................. 58
Figure 59 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN8
(Blackadder Ck). ............................................................................................................. 58
Figure 60 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN8
(Blackadder Ck). ............................................................................................................. 59
Figure 61 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN8
(Blackadder Ck). ............................................................................................................. 59
Figure 62 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS12 (Canning R). ........ 62
Figure 63 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS12
(Canning R)..................................................................................................................... 62
Figure 64 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS12
(Canning R)..................................................................................................................... 63
Figure 65 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS12
(Canning R)..................................................................................................................... 63
Figure 66 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS12 (Canning
R). ................................................................................................................................... 64
Figure 67 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS12
(Canning R)..................................................................................................................... 64
Figure 68 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS12
(Canning R)..................................................................................................................... 65
Figure 69 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS12
(Canning R)..................................................................................................................... 65
Figure 70 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS12 (Canning). ..... 66
Swan Canning Catchment Data Report January - June 2015
8 Department of Water
Figure 71 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS12 (Canning
R). ................................................................................................................................... 66
Figure 72 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN3 (Ellen Bk). .............. 69
Figure 73 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN3
(Ellen Bk). ....................................................................................................................... 69
Figure 74 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN3 (Ellen
Bk). .................................................................................................................................. 70
Figure 75 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN3
(Ellen Bk). ....................................................................................................................... 70
Figure 76 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN3 (Ellen Bk). ....... 71
Figure 77 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN3
(Ellen Bk). ....................................................................................................................... 71
Figure 78 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN3
(Ellen Bk). ....................................................................................................................... 72
Figure 79 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN3
(Ellen Bk). ....................................................................................................................... 72
Figure 80 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN3 (Ellen Bk). ....... 73
Figure 81 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN3 (Ellen Bk). ....... 73
Figure 82 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN10 (Helena R). .......... 76
Figure 83 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN10
(Helena R)....................................................................................................................... 76
Figure 84 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN10
(Helena R)....................................................................................................................... 77
Figure 85 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN10
(Helena R)....................................................................................................................... 77
Figure 86 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN10 (Helena
R). ................................................................................................................................... 78
Figure 87 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN10
(Helena R)....................................................................................................................... 78
Figure 88 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN10
(Helena R)....................................................................................................................... 79
Figure 89 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN10
(Helena R)....................................................................................................................... 79
Figure 90 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN10 (Helena
R). ................................................................................................................................... 80
Swan Canning Catchment Data Report January - June 2015
Figure 91 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN10 (Helena
R). ................................................................................................................................... 80
Figure 92 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN7 (Jane Bk). .............. 83
Figure 93 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN7
(Jane Bk)......................................................................................................................... 83
Figure 94 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN7 (Jane
Bk). .................................................................................................................................. 84
Figure 95 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN7
(Jane Bk)......................................................................................................................... 84
Figure 96 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN7 (Jane Bk). ....... 85
Figure 97 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN7
(Jane Bk)......................................................................................................................... 85
Figure 98 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN7
(Jane Bk)......................................................................................................................... 86
Figure 99 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN7
(Jane Bk)......................................................................................................................... 86
Figure 100 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN7 (Jane Bk). ....... 87
Figure 101 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN7 (Jane Bk). ....... 87
Figure 102 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS1 (Mills St MD). ......... 90
Figure 103 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS1
(Mills St MD). .................................................................................................................. 90
Figure 104 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS1 (Mills
St MD). ............................................................................................................................ 91
Figure 105 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS1
(Mills St MD). .................................................................................................................. 91
Figure 106 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS1 (Mills St
MD). ................................................................................................................................ 92
Figure 107 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS1
(Mills St MD). .................................................................................................................. 92
Figure 108 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS1
(Mills St MD). .................................................................................................................. 93
Figure 109 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS1
(Mills St MD). .................................................................................................................. 93
Figure 110 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS1 (Mills St
MD). ................................................................................................................................ 94
Swan Canning Catchment Data Report January - June 2015
10 Department of Water
Figure 111 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS1 (Mills St
MD). ................................................................................................................................ 94
Figure 112 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS13 (S. Belmont
MD). ................................................................................................................................ 97
Figure 113 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS13
(S. Belmont MD). ............................................................................................................ 97
Figure 114 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS13 (S.
Belmont MD). .................................................................................................................. 98
Figure 115 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS13
(S. Belmont MD). ............................................................................................................ 98
Figure 116 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS13 (S.
Belmont MD). .................................................................................................................. 99
Figure 117 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS13
(S. Belmont MD). ............................................................................................................ 99
Figure 118 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS13
(S. Belmont MD). .......................................................................................................... 100
Figure 119 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS13
(S. Belmont MD). .......................................................................................................... 100
Figure 120 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS13 (S.
Belmont MD). ................................................................................................................ 101
Figure 121 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS13 (S.
Belmont MD). ................................................................................................................ 101
Figure 122 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS7 (Southern R). ....... 104
Figure 123 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS7
(Southern R). ................................................................................................................ 104
Figure 124 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS7
(Southern R). ................................................................................................................ 105
Figure 125 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS7
(Southern R). ................................................................................................................ 105
Figure 126 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS7 (Southern
R). ................................................................................................................................. 106
Figure 127 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS7
(Southern R). ................................................................................................................ 106
Figure 128 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS7
(Southern R). ................................................................................................................ 107
Figure 129 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS7
(Southern R). ................................................................................................................ 107
Swan Canning Catchment Data Report January - June 2015
Figure 130 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS7 (Southern
R). ................................................................................................................................. 108
Figure 131 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS7 (Southern
R). ................................................................................................................................. 108
Figure 132 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN11 (Susannah
Bk). ................................................................................................................................ 111
Figure 133 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN11
(Susannah Bk). ............................................................................................................. 111
Figure 134 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN11
(Susannah Bk). ............................................................................................................. 112
Figure 135 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN11
(Susannah Bk). ............................................................................................................. 112
Figure 136 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN11
(Susannah Bk). ............................................................................................................. 113
Figure 137 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN11
(Susannah Bk). ............................................................................................................. 113
Figure 138 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN11
(Susannah Bk). ............................................................................................................. 114
Figure 139 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN11
(Susannah Bk). ............................................................................................................. 114
Figure 140 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN11
(Susannah Bk). ............................................................................................................. 115
Figure 141 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN11
(Susannah Bk). ............................................................................................................. 115
Figure 142 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS3 (Yule Bk). ............. 118
Figure 143 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS3
(Yule Bk). ...................................................................................................................... 118
Figure 144 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS3 (Yule
Bk). ................................................................................................................................ 119
Figure 145 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS3
(Yule Bk). ...................................................................................................................... 119
Figure 146 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS3 (Yule Bk). ...... 120
Figure 147 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS3
(Yule Bk). ...................................................................................................................... 120
Figure 148 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS3
(Yule Bk). ...................................................................................................................... 121
Swan Canning Catchment Data Report January - June 2015
12 Department of Water
Figure 149 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS3
(Yule Bk). ...................................................................................................................... 121
Figure 150 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS3 (Yule Bk). ...... 122
Figure 151 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS3 (Yule Bk). ...... 122
Figure 152 Perth’s rainfall 2010 to 30th June 2015. ........................................................................ 127
Swan Canning Catchment Data Report January - June 2015
Preface
The Swan Canning Environmental Monitoring and Reporting project is a long term
monitoring project consisting of regular sampling of the Swan and Canning Rivers
and selected tributaries within their catchments, enabling regular water quality
reporting and annual reporting on estuarine and catchment compliance against long
and short term targets. The project was designed and implemented in 1994 by the
Swan River Trust and Department of Water (then Water and Rivers Commission) as
part of the Department of Parks and Wildlife's River Protection Strategy. The project
currently falls under the Swan River Trust’s Healthy Rivers Action Plan and is jointly
operated by the Water Science Branch of the Department of Water and the
Department of Parks and Wildlife.
The sampling conducted for this project is captured under the Department of Water
WIN data management project SG-C-SWANCATCH, consisting of fortnightly
sampling of sixteen sites.
In March 2010 a second catchment sampling project was implemented to address
gaps in previous monitoring and to provide data for predictive modelling of the Swan
Canning Catchment. This project consists of fortnightly sampling of sixteen sites and
falls under the Department of Water project SG-C-SCWQIP (Swan Canning Water
Quality Improvement Plan). Note that this sampling project was initially run from
January 2007 to June 2008 as SG-C-SWANCCI but was closed due to limited
funding.
Some important changes to the SWANCATCH and SCWQIP projects are listed
below:
• Changed from weekly to fortnightly sampling in 2001.
• Changed from specific conductivity (compensated at 25°C) to uncompensated conductivity in October 2001 and back to specific conductivity in September 2006
• Added parameters Dissolved oxygen and pH in September 2006 (changed instrument from WTW to Quanta).
• Added parameters Dissolved organic nitrogen and Total organic carbon in October 2006. Total organic carbon only sampled to July 2008.
• October 2006 Canning River site moved ~500 m downstream from McKenzie Grove to Seaforth for better site access and to align with location of gauging station.
• October 2006 extra Ellen Brook site (EBAC) added to regular sampling near confluence with Avon River. Stopped sampling March 2009 due to site access issues. Site location changed to West Swan Road Bridge (SWN9) and sampling restarted March 2010.
• April 2011 SCWQIP Claise Brook site moved from SCCIN5 to CB13.
• May 2011 South Belmont Main Drain site moved ~100 m upstream from SWS11 (Great Eastern Hwy) to SWS13 (Severin Walk, Abernathy Rd) due to
Swan Canning Catchment Data Report January - June 2015
14 Department of Water
tidal influence at the old site (SWS11). The gauging station has also been moved (~750 m upstream to Cleaver Terrace).
• The Wandoo Creek catchment site was moved downstream to WNDCK (August 2011) as the former site, SCCIN4, was almost always dry, even in winter.
• From April 2012 onwards the SCWQIP sites list was modified and now consists of 16 sites (down from 17); four of which are new sites selected after a period of expanded monitoring where 36 sites were monitored for nine months (Aug 2011 to March 2012).
Swan Canning Catchment Data Report January - June 2015
Table 1 SWANCATCH Swan and Canning Catchment site coordinates.
Swan-Canning Sub catchment
Site Site Code
Easting Northing Flow
Status
Mills Street Main Drain
Mills St Main Drain, Palm Place, Cannington
SWS1 397944 6457220 Continuous
Bannister Creek Bannister Creek, Hybanthus Rd, Ferndale
SWS2 397778 6454846 Continuous
Yule Brook Yule Brook, Brixton St SWS3 402466 6456282 Ephemeral
Bickley Brook Bickley Brook Main Drain, Austin Ave, Kenwick
SWS4 403329 6454317 Ephemeral
Upper Canning River
Canning River, Seaforth, Gosnells
SWS12 407220 6448910 Continuous
Southern River Southern River, Anaconda Drive, Huntingdale
SWS7 403622 6450423 Continuous
Bayswater Main Drain
Bayswater Main Drain, Slade St, Bayswater
SWS10 398086 6467454 Continuous
South Belmont Main Drain
South Belmont Main Drain, Severin Walk, Abernathy Road, Belmont
SWS13 397904 6464705 Continuous
Ellen Brook
Ellen Brook, Almeria Pde, Upper Swan
SWN3 407640 6486742 Ephemeral
Ellen Brook Bridge, West Swan Road, Upper Swan
SWN9 405701 6482467 Ephemeral
Avon River (Millendon)
Swan River, Upper Swan Bridge, Great Northern Highway
SWN5 407488 6483347 Continuous
Jane Brook Jane Brook, Sweeting Bridge, Great Northern Highway, Middle Swan
SWN7 406725 6474359 Ephemeral
Blackadder Creek
Blackadder Creek, Francis Street, Midland
SWN8 407052 6472871 Ephemeral
Helena River Helena River, Whiteman Rd
SWN10 406131 6470158 Ephemeral
Susannah Brook Susannah Brook, River Rd SWN11 406686 6479346 Ephemeral
Bennett Brook Bennett Brook, Brook Rd SWN12 401583 6473636 Continuous
Swan Canning Catchment Data Report January - June 2015
16 Department of Water
Table 2 SCWQIP Swan and Canning Catchment site coordinates.
Swan-Canning Sub catchment
Site Site Code Easting Northing Flow
Status
South Perth Galway Rd, Manning
Wilson Main Drain
SCCIS1
WIFRD
394510
397532
6457040
6456807
Continuous
Continuous
Bull Creek Beatrice Ave Main Drain
Holmes St, Shelley
BAMDKD
SCCIS2
394601
394994
6455139
6455765
Continuous
Continuous
Lower Canning Cockram St Drain, Grose Av, Cannington
SCCIS3 400130 6457259 Continuous
Helm Street Drain
Helm St Drain, Maddington SCCIS4 405288 6452862 Ephemeral
Ellis Brook Ellis Brook, Mills St, Maddington
EBGS01 405822 6451830 Ephemeral
Southern River Neerigen Brook, Armadale AW05 405936 6442203 Ephemeral
Perth Airport South Drain
Perth Airport Drain, Second Ave, Redcliffe
SCCIS11 400699 6466290 Continuous
Perth Airport North Drain
Limestone Creek, Great Eastern Hwy Bypass
SCCIS12 401849 6467960 Continuous
Henley Brook Henley Brook, Brockman St
HBBROCK 405664 6480723 Ephemeral
Saint Leonards Creek
George St access, West Swan
SCCIN3 405159 6477205 Ephemeral
Upper Swan
Chapman St drain, Ashfield CSMDREID 400699 6468584 Continuous
Wandoo Creek, West Swan
WNDCK 404655 6475967 Ephemeral
Maylands Maylands/Inglewood Main Drain
MIMDOUT 395191 6466023 Continuous
Claise Brook Main Drain
Claise Brook Fountain Lake Bridge
CB13 393862 6464272 Ephemeral
Swan Canning Catchment Data Report January - June 2015
Figure 1 Map of Swan and Canning Catchment routine monitoring sites.
Swan Canning Catchment Data Report January - June 2015
18 Department of Water
Table 3 Swan and Canning Catchment sampling regime.
Parameter measured Swan Canning Catchment sites
Temporal Pattern All year, when flowing
Number of sites SWANCATCH x 16, SCWQIP x 16
Spatial Pattern Fixed
Sampling Frequency Fortnightly
Total Suspended Solids (TSS) Grab sample
Total Nitrogen and Phosphorus (TN & TP) Grab sample
Soluble reactive Phosphorus, Nitrogen as
ammonia/ammonium, Total oxidised Nitrogen &
Dissolved organic Nitrogen (SRP, NH3-N/NH4-N,
NOx-N, DOrgN)
Grab sample (filtered)
Dissolved Organic Carbon (DOC) Grab sample (filtered)
Quanta (Dissolved Oxygen, pH & Specific
Conductivity)
In-situ
Field Observations All sites
Swan Canning Catchment Data Report January - June 2015
Summary
This Swan Canning Catchment quarterly data report presents data collected from a
total of fifteen sites from the SWANCATCH project. Data are presented in graphical
and tabular form for ten key analytes; Total Nitrogen, Nitrogen as
ammonia/ammonium, Total oxidised nitrogen, Dissolved organic nitrogen, Total
phosphorus, Soluble reactive phosphorus, Dissolved organic carbon, Total
suspended solids, Dissolved oxygen and Specific conductivity.
At each site the data are presented as a graph showing the previous five years of
data as monthly box plots overlain by the current year monthly medians. Data for the
lower Ellen Brook site (SWN9) and the sixteen SCWQIP sites have not been
presented in graphs because sampling only began in March 2010. Catchment data
are presented over a calendar year (January to December), with quarterly reports
corresponding to the quarters of the year (Jan-Mar, Apr-Jun, Jul-Sep, Oct-Dec) and
each quarterly report adding to the “current year” data already presented.
This data report is the first quarterly report for 2015 and presents 2015 data from
January to March over background data from 2010 to 2014. The background monthly
box plots display the median, 25th, 75th, 10th and 90th percentiles where sufficient data
exists. The graphical program used (Sigma Plot) requires a minimum of 3 data points
to calculate 25th and 75th percentiles and a minimum of 9 data points to calculate 10th
and 90th percentiles. Due to the ephemerality of many of the catchment sites and the
fortnightly sampling regime, the background monthly sample numbers may often be
quite low. For clarity the background monthly sample numbers (n) have been
reported on each graph. The limit of reporting was halved when data was below the
limit to allow the data to be graphed.
The current year’s data (2015) is presented in tables showing monthly minimum and
maximum values and the number of samples collected for each analyte.
Data, collected from the sixteen SWANCATCH and sixteen SCWQIP sites, is also
displayed in tabular form near the end of this report with quarterly means and
standard deviations of the ten key analytes displayed for all sites in one comparison
table for each quarter reported.
The April to June 2015 quarter was relatively dry, with Perth receiving only 238.2mm
of rainfall compared with the long term average of 350.6mm.
Over much of the April to June quarter many of the northern catchments stayed dry
and flow only started again in late May and into June. By the end of June all but one
of the 15 monitored catchments were flowing; with Susannah Brook still dry at the
end of June.
Swan Canning Catchment Data Report January - June 2015
20 Department of Water
1 Avon R (SWN5)
SWN5 (AVON) TN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN
(m
g L
-1)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
n=8 n=5 n=2 n=4 n=7 n=10 n=13 n=12 n=10 n=10 n=10 n=10
2010-2014 data
2015 data
Figure 2 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN5 (Avon R).
SWN5 (AVON) NH3-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NH
3-N
(m
g L
-1)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
n=8 n=5 n=2 n=4 n=7 n=10 n=13 n=12 n=10 n=10 n=10 n=10
2010-2014 data
2015 data
Figure 3 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN5 (Avon R).
Swan Canning Catchment Data Report January - June 2015
SWN5 (AVON) NOx-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NO
x-N
(m
g L
-1)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
n=8 n=5 n=2 n=4 n=7 n=10 n=13 n=12 n=10 n=10 n=10 n=10
2010-2014 data
2015 data
Figure 4 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN5 (Avon R).
SWN5 (AVON) DOrgN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
rgN
(m
g L
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
n=8 n=5 n=2 n=4 n=7 n=10 n=13 n=12 n=10 n=10 n=10 n=10
2010-2014 data
2015 data
Figure 5 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN5 (Avon R).
The 90th Percentile for
August was 1.02mgL-1
Swan Canning Catchment Data Report January - June 2015
22 Department of Water
SWN5 (AVON) TP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TP
(m
g L
-1)
0.00
0.02
0.04
0.06
0.08
0.10
0.12
0.14
0.16
0.18
n=8 n=5 n=2 n=4 n=7 n=10 n=13 n=12 n=10 n=10 n=10 n=10
2010-2014 data
2015 data
Figure 6 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN5 (Avon R).
SWN5 (AVON) SRP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
SR
P (
mg L
-1)
0.000
0.005
0.010
0.015
0.020
0.025
n=8 n=5 n=2 n=4 n=7 n=10 n=13 n=12 n=10 n=10 n=10 n=10
2010-2014 data
2015 data
Figure 7 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN5 (Avon R).
The 90th Percentile for
Dec was 0.060mgL-1
Swan Canning Catchment Data Report January - June 2015
SWN5 (AVON) DOC
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
C (
mg L
-1)
0
5
10
15
20
25
30
35
n=8 n=5 n=2 n=4 n=7 n=10 n=13 n=12 n=10 n=10 n=10 n=10
2010-2014 data
2015 data
Figure 8 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN5 (Avon R).
SWN5 (AVON) TSS
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TS
S (
mg L
-1)
0
5
10
15
20
25
n=8 n=5 n=2 n=4 n=7 n=10 n=13 n=12 n=10 n=10 n=10 n=10
2010-2014 data
2015 data
Figure 9 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN5 (Avon R).
The 90th Percentile for
August was 72mgL-1
Swan Canning Catchment Data Report January - June 2015
24 Department of Water
SWN5 (AVON) DO
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
(m
g L
-1)
0
2
4
6
8
10
12
n=8 n=5 n=2 n=4 n=7 n=10 n=13 n=12 n=10 n=10 n=10 n=10
2010-2014 data
2015 data
Figure 10 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN5 (Avon R).
SWN5 (AVON) Sp. Conductivity
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sp.
Cond (
mS
cm
-1)
0
5
10
15
20
25
30
n=8 n=5 n=2 n=4 n=7 n=10 n=13 n=12 n=10 n=10 n=10 n=10
2010-2014 data
2015 data
Figure 11 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN5 (Avon R).
Swan Canning Catchment Data Report January - June 2015
Table 4 2015 monthly sample numbers, minimum and maximum values at site SWN5 (Avon R).
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN (mg L-1)
n 0 0 0 0 0 3
min - - - - - 0.61
max - - - - - 0.90
med - - - - - 0.64
NH3-N (mg L-1)
n 0 0 0 0 0 3
min - - - - - <0.01
max - - - - - 0.027
med - - - - - <0.01
NOx-N (mg L-1)
n 0 0 0 0 0 3
min - - - - - <0.01
max - - - - - 0.012
med - - - - - <0.01
DOrgN (mg L-1)
n 0 0 0 0 0 3
min - - - - - 0.54
max - - - - - 0.72
med - - - - - 0.56
TP (mg L-1)
n 0 0 0 0 0 3
min - - - - - <0.005
max - - - - - 0.026
med - - - - - 0.013
SRP (mg L-1)
n 0 0 0 0 0 3
min - - - - - <0.005
max - - - - - 0.011
med - - - - - 0.009
DOC (mg L-1)
n 0 0 0 0 0 3
min - - - - - 10
max - - - - - 14
med - - - - - 11
TSS (mg L-1)
n 0 0 0 0 0 3
min - - - - - 2
max - - - - - 4
med - - - - - 4
Swan Canning Catchment Data Report January - June 2015
26 Department of Water
DO (mg L-1)
n 0 0 0 0 0 3
min - - - - - 7.27
max - - - - - 9.77
med - - - - - 8.28
Sp. Conductivity (mS cm-1)
n 0 0 0 0 0 3
min - - - - - 10.513
max - - - - - 13.390
med - - - - - 11.559
Swan Canning Catchment Data Report January - June 2015
2 Bannister Ck (SWS2)
SWS2 (BANNISTER) TN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN
(m
g L
-1)
0.0
0.5
1.0
1.5
2.0
2.5
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 12 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS2 (Bannister Ck).
SWS2 (BANNISTER) NH3-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NH
3-N
(m
g L
-1)
0.0
0.1
0.2
0.3
0.4
0.5
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 13 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS2 (Bannister Ck).
The 90th Percentile for
April was 0.71mgL-1
Swan Canning Catchment Data Report January - June 2015
28 Department of Water
SWS2 (BANNISTER) NOx-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NO
x-N
(m
g L
-1)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 14 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS2 (Bannister Ck).
SWS2 (BANNISTER) DOrgN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
rgN
(m
g L
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 15 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS2 (Bannister Ck).
Swan Canning Catchment Data Report January - June 2015
SWS2 (BANNISTER) TP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TP
(m
g L
-1)
0.0
0.1
0.2
0.3
0.4
0.5
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 16 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS2 (Bannister Ck).
SWS2 (BANNISTER) SRP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
SR
P (
mg L
-1)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 17 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS2 (Bannister Ck).
The 90th Percentile for
May was 0.73mgL-1
The 90th Percentile for
May was 0.93mgL-1
Swan Canning Catchment Data Report January - June 2015
30 Department of Water
SWS2 (BANNISTER) DOC
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
C (
mg L
-1)
0
5
10
15
20
25
30
35
40
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 18 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS2 (Bannister Ck).
SWS2 (BANNISTER) TSS
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TS
S (
mg L
-1)
0
5
10
15
20
25
30
35
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 19 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS2 (Bannister Ck).
Swan Canning Catchment Data Report January - June 2015
SWS2 (BANNISTER) DO
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
(m
g L
-1)
0
2
4
6
8
10
12
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 20 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS2 (Bannister Ck).
SWS2 (BANNISTER) Sp. Conductivity
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sp.
Cond (
mS
cm
-1)
0.0
0.5
1.0
1.5
2.0
2.5
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 21 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS2 (Bannister Ck).
Swan Canning Catchment Data Report January - June 2015
32 Department of Water
Table 5 2015 monthly sample numbers, minimum and maximum values at SWS2 (Bannister Ck).
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN (mg L-1)
n 2 2 2 2 2 3
min 1.3 1.1 1.1 0.91 0.86 1.2
max 1.3 1.2 1.2 1.20 1.00 1.9
med - - - 1.055 0.93 1.3
NH3-N (mg L-1)
n 2 2 2 2 2 3
min 0.046 0.056 0.066 0.066 0.066 0.067
max 0.053 0.086 0.067 0.092 0.073 0.670
med - - - 0.079 0.070 0.076
NOx-N (mg L-1)
n 2 2 2 2 2 3
min 0.041 0.059 0.056 0.17 0.14 0.30
max 0.044 0.120 0.077 0.18 0.26 0.46
med - - - 0.175 0.20 0.32
DOrgN (mg L-1)
n 2 2 2 2 2 3
min 1.1 0.74 0.84 0.550 0.42 0.69
max 1.1 0.98 0.99 0.720 0.66 0.83
med - - - 0.635 0.54 0.80
TP (mg L-1)
n 2 2 2 2 2 3
min 0.11 0.11 0.097 0.10 0.067 0.082
max 0.13 0.15 0.110 0.12 0.083 0.190
med - - - 0.11 0.075 0.089
SRP (mg L-1)
n 2 2 2 2 2 3
min 0.052 0.067 0.049 0.062 0.034 0.047
max 0.072 0.098 0.067 0.069 0.051 0.110
med - - - 0.066 0.043 0.053
DOC (mg L-1)
n 2 2 2 2 2 3
min 25 22 23 11 8 20
max 30 25 27 16 14 22
med - - - 13.5 11 20
TSS (mg L-1)
n 2 2 2 2 2 3
min 4 5 4 5 2 4
max 5 5 18 13 4 15
med - - - 9 3 4
Swan Canning Catchment Data Report January - June 2015
DO (mg L-1)
n 2 2 2 2 2 3
min 2.26 1.71 2.98 2.55 5.65 5.86
max 2.42 2.79 3.33 5.15 7.38 7.05
med - - - 3.85 6.52 6.36
Sp. Conductivity (mS cm-1)
n 2 2 2 2 2 3
min 1.111 0.801 0.969 0.433 0.343 0.614
max 1.406 1.187 1.408 0.734 0.615 0.915
med - - - 0.584 0.479 0.787
Swan Canning Catchment Data Report January - June 2015
34 Department of Water
3 Bayswater MD (SWS10)
SWS10 (BAYSWATER) TN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN
(m
g L
-1)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 22 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS10 (Bayswater MD).
SWS10 (BAYSWATER) NH3-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NH
3-N
(m
g L
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 23 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS10 (Bayswater MD).
The 90th Percentile for
July was 4.56mgL-1
Swan Canning Catchment Data Report January - June 2015
SWS10 (BAYSWATER) NOx-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NO
x-N
(m
g L
-1)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 24 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS10 (Bayswater
MD).
SWS10 (BAYSWATER) DOrgN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
rgN
(m
g L
-1)
0.0
0.2
0.4
0.6
0.8
1.0
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 25 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS10 (Bayswater
MD).
The 90th Percentile for
July was 3.46mgL-1
Swan Canning Catchment Data Report January - June 2015
36 Department of Water
SWS10 (BAYSWATER) TP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TP
(m
g L
-1)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 26 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS10 (Bayswater MD).
SWS10 (BAYSWATER) SRP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
SR
P (
mg L
-1)
0.000
0.005
0.010
0.015
0.020
0.025
0.030
0.035
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 27 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS10 (Bayswater
MD).
The 90th Percentile for
July was 2.48mgL-1
The 90th Percentile for
July was 0.34mgL-1
The 90th Percentile for
Dec was 0.09mgL-1
Swan Canning Catchment Data Report January - June 2015
SWS10 (BAYSWATER) DOC
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
C (
mg L
-1)
0
5
10
15
20
25
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 28 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS10 (Bayswater
MD).
SWS10 (BAYSWATER) TSS
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TS
S (
mg L
-1)
0
10
20
30
40
50
60
70
80
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 29 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS10 (Bayswater MD).
The 90th Percentile for
January was 36.6mgL-1
Swan Canning Catchment Data Report January - June 2015
38 Department of Water
SWS10 (BAYSWATER) DO
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
(m
g L
-1)
0
2
4
6
8
10
12
14
n=12 n=9 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 30 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS10 (Bayswater MD).
SWS10 (BAYSWATER) Sp. Conductivity
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sp.
Cond (
mS
cm
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 31 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS10 (Bayswater MD).
Swan Canning Catchment Data Report January - June 2015
Table 6 2015 monthly sample numbers, minimum and maximum values at SWS10 (Bayswater MD).
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN (mg L-1)
n 2 2 2 2 2 3
min 1.4 1.4 1.5 0.84 1.1 1.4
max 1.4 1.5 2.0 1.60 1.5 1.7
med - - - 1.22 1.3 1.5
NH3-N (mg L-1)
n 2 2 2 2 2 3
min 0.43 0.46 0.56 0.20 0.30 0.37
max 0.57 0.56 0.70 0.52 0.53 0.45
med - - - 0.36 0.42 0.44
NOx-N (mg L-1)
n 2 2 2 2 2 3
min 0.41 0.38 0.38 0.26 0.37 0.46
max 0.47 0.42 0.48 0.56 0.46 0.60
med - - - 0.41 0.42 0.51
DOrgN (mg L-1)
n 2 2 2 2 2 3
min 0.30 0.33 0.43 0.26 0.34 0.50
max 0.44 0.51 0.64 0.45 0.47 0.53
med - - - 0.36 0.41 0.51
TP (mg L-1)
n 2 2 2 2 2 3
min 0.046 0.042 0.043 0.038 0.029 0.050
max 0.049 0.065 0.086 0.067 0.048 0.058
med - - - 0.053 0.039 0.052
SRP (mg L-1)
n 2 2 2 2 2 3
min 0.009 0.006 0.010 0.013 0.012 0.012
max 0.010 0.019 0.012 0.016 0.016 0.018
med - - - 0.015 0.014 0.017
DOC (mg L-1)
n 2 2 2 2 2 3
min 11 12 12 7 8 11
max 12 12 13 10 10 14
med - - - 8.5 9 12
TSS (mg L-1)
n 2 2 2 2 2 3
min 8 13 12 9 6 8
max 10 17 32 12 10 11
med - - - 10.5 8 10
Swan Canning Catchment Data Report January - June 2015
40 Department of Water
DO (mg L-1)
n 2 2 2 2 2 3
min 6.35 1.17 5.00 6.89 7.5 7.11
max 8.29 7.38 5.38 7.40 8.27 8.18
med - - - 7.15 7.89 7.38
Sp. Conductivity (mS cm-1)
n 2 2 2 2 2 3
min 0.797 0.799 0.806 0.340 0.521 0.645
max 0.803 0.830 0.806 0.778 0.760 0.754
med - - - 0.559 0.641 0.748
Swan Canning Catchment Data Report January - June 2015
4 Bennett Bk (SWN12)
SWN12 (BENNETT BK) TN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN
(m
g L
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
2.2
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 32 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN12 (Bennett Bk).
SWN12 (BENNETT BK) NH3-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NH
3-N
(m
g L
-1)
0.00
0.02
0.04
0.06
0.08
0.10
0.12
0.14
0.16
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 33 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN12 (Bennett Bk).
The 90th Percentile for
January was 0.32mgL-1
The 90th Percentile for
Dec was 0.49mgL-1
Swan Canning Catchment Data Report January - June 2015
42 Department of Water
SWN12 (BENNETT BK) NOx-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NO
x-N
(m
g L
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 34 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN12 (Bennett Bk).
SWN12 (BENNETT BK) DOrgN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
rgN
(m
g L
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 35 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN12 (Bennett Bk).
Swan Canning Catchment Data Report January - June 2015
SWN12 (BENNETT BK) TP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TP
(m
g L
-1)
0.00
0.05
0.10
0.15
0.20
0.25
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 36 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN12 (Bennett Bk).
SWN12 (BENNETT BK) SRP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
SR
P (
mg L
-1)
0.00
0.01
0.02
0.03
0.04
0.05
0.06
0.07
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 37 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN12 (Bennett Bk).
Swan Canning Catchment Data Report January - June 2015
44 Department of Water
SWN12 (BENNETT BK) DOC
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
C (
mg L
-1)
0
5
10
15
20
25
30
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 38 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN12 (Bennett Bk).
SWN12 (BENNETT BK) TSS
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TS
S (
mg L
-1)
0
5
10
15
20
25
30
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 39 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN12 (Bennett Bk).
Swan Canning Catchment Data Report January - June 2015
SWN12 (BENNETT BK) DO
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
(m
g L
-1)
0
2
4
6
8
10
n=12 n=9 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 40 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN12 (Bennett Bk).
SWN12 (BENNETT BK) Sp. Conductivity
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sp.
Cond (
mS
cm
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 41 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN12 (Bennett Bk).
Swan Canning Catchment Data Report January - June 2015
46 Department of Water
Table 7 2015 monthly sample numbers, minimum and maximum values at SWN12 (Bennett Bk).
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN (mg L-1)
n 2 2 2 2 2 3
min 0.43 0.87 0.75 0.91 0.84 1.1
max 0.83 0.90 0.79 1.00 0.88 1.2
med - - - 0.96 0.86 1.1
NH3-N (mg L-1)
n 2 2 2 2 2 3
min 0.024 0.028 0.021 0.034 0.046 0.042
max 0.030 0.040 0.026 0.044 0.057 0.075
med - - - 0.039 0.052 0.043
NOx-N (mg L-1)
n 2 2 2 2 2 3
min 0.071 0.12 0.089 0.24 0.20 0.32
max 0.099 0.15 0.120 0.26 0.21 0.49
med - - - 0.25 0.21 0.40
DOrgN (mg L-1)
n 2 2 2 2 2 3
min 0.28 0.62 0.58 0.49 0.55 0.56
max 0.62 0.74 0.60 0.57 0.59 0.61
med - - - 0.53 0.57 0.57
TP (mg L-1)
n 2 2 2 2 2 3
min 0.074 0.068 0.049 0.047 0.030 0.056
max 0.078 0.078 0.059 0.081 0.045 0.058
med - - - 0.064 0.038 0.057
SRP (mg L-1)
n 2 2 2 2 2 3
min 0.031 0.043 0.029 0.026 0.022 0.022
max 0.038 0.045 0.030 0.028 0.022 0.023
med - - - 0.027 0.022 0.022
DOC (mg L-1)
n 2 2 2 2 2 3
min 16 17 16 13 13 13
max 18 18 17 14 13 16
med - - - 13.5 13 13
TSS (mg L-1)
n 2 2 2 2 2 3
min 5 6 3 6 3 6
max 5 7 5 8 3 8
med - - - 7 3 8
Swan Canning Catchment Data Report January - June 2015
DO (mg L-1)
n 2 2 2 2 2 3
min 5.03 4.41 4.70 4.83 6.21 6.17
max 5.05 4.99 5.85 5.59 6.46 6.56
med - - - 5.21 6.34 6.40
Sp. Conductivity (mS cm-1)
n 2 2 2 2 2 3
min 0.639 0.675 0.697 0.640 0.628 0.661
max 0.708 0.688 0.725 0.690 0.686 0.707
med - - - 0.665 0.657 0.664
Swan Canning Catchment Data Report January - June 2015
48 Department of Water
5 Bickley Bk (SWS4)
SWS4 (BICKLEY BK) TN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN
(m
g L
-1)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
n=3 n=3 n=5 n=5 n=7 n=10 n=13 n=12 n=10 n=10 n=8 n=10
2010-2014 data
2015 data
Figure 42 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS4 (Bickley Bk).
SWS4 (BICKLEY BK) NH3-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NH
3-N
(m
g L
-1)
0.00
0.02
0.04
0.06
0.08
0.10
0.12
n=3 n=3 n=5 n=5 n=7 n=10 n=13 n=12 n=10 n=10 n=8 n=10
2010-2014 data
2015 data
Figure 43 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS4 (Bickley Bk).
The 90th Percentile for
June was 4.05mgL-1
The 90th Percentile for
June was 5.52mgL-1
Swan Canning Catchment Data Report January - June 2015
SWS4 (BICKLEY BK) NOx-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NO
x-N
(m
g L
-1)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
n=3 n=3 n=5 n=5 n=7 n=10 n=13 n=12 n=10 n=10 n=8 n=10
2010-2014 data
2015 data
Figure 44 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS4 (Bickley Bk).
SWS4 (BICKLEY BK) DOrgN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
rgN
(m
g L
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
n=3 n=3 n=5 n=5 n=7 n=10 n=13 n=12 n=10 n=10 n=8 n=10
2010-2014 data
2015 data
Figure 45 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS4 (Bickley Bk).
Swan Canning Catchment Data Report January - June 2015
50 Department of Water
SWS4 (BICKLEY BK) TP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TP
(m
g L
-1)
0.0
0.1
0.2
0.3
0.4
0.5
n=3 n=3 n=5 n=5 n=7 n=10 n=13 n=12 n=10 n=10 n=8 n=10
2010-2014 data
2015 data
Figure 46 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS4 (Bickley Bk).
SWS4 (BICKLEY BK) SRP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
SR
P (
mg L
-1)
0.00
0.02
0.04
0.06
0.08
0.10
0.12
0.14
n=3 n=3 n=5 n=5 n=7 n=10 n=13 n=12 n=10 n=10 n=8 n=10
2010-2014 data
2015 data
Figure 47 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS4 (Bickley Bk).
Swan Canning Catchment Data Report January - June 2015
SWS4 (BICKLEY BK) DOC
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
C (
mg L
-1)
0
5
10
15
20
25
30
n=3 n=3 n=5 n=5 n=7 n=10 n=13 n=12 n=10 n=10 n=8 n=10
2010-2014 data
2015 data
Figure 48 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS4 (Bickley Bk).
SWS4 (BICKLEY BK) TSS
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TS
S (
mg L
-1)
0
5
10
15
20
25
30
35
n=3 n=3 n=5 n=5 n=7 n=10 n=13 n=12 n=10 n=10 n=8 n=10
2010-2014 data
2015 data
Figure 49 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS4 (Bickley Bk).
The 90th Percentile for
June was 77mgL-1
Swan Canning Catchment Data Report January - June 2015
52 Department of Water
SWS4 (BICKLEY BK) DO
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
(m
g L
-1)
0
2
4
6
8
10
12
14
n=3 n=3 n=5 n=5 n=7 n=10 n=13 n=12 n=10 n=10 n=8 n=10
2010-2014 data
2015 data
Figure 50 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS4 (Bickley Bk).
SWS4 (BICKLEY BK) Sp. Conductivity
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sp.
Cond (
mS
cm
-1)
0.0
0.5
1.0
1.5
2.0
2.5
n=3 n=3 n=5 n=5 n=7 n=10 n=13 n=12 n=10 n=10 n=8 n=10
2010-2014 data
2015 data
Figure 51 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS4 (Bickley Bk).
Swan Canning Catchment Data Report January - June 2015
Table 8 2015 monthly sample numbers, minimum and maximum values at SWS4 (Bickley Bk).
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN (mg L-1)
n 0 0 0 1 2 3
min - - - 0.48 0.55 0.39
max - - - 0.48 4.10 2.80
med - - - 0.48 2.33 1.40
NH3-N (mg L-1)
n 0 0 0 1 2 3
min - - - <0.01 0.013 <0.01
max - - - <0.01 0.040 0.083
med - - - <0.01 0.027 0.019
NOx-N (mg L-1)
n 0 0 0 1 2 3
min - - - 0.12 0.023 <0.01
max - - - 0.12 3.500 2.30
med - - - 0.12 1.762 0.86
DOrgN (mg L-1)
n 0 0 0 1 2 3
min - - - 0.35 0.35 0.38
max - - - 0.35 0.45 0.50
med - - - 0.35 0.40 0.43
TP (mg L-1)
n 0 0 0 1 2 3
min - - - 0.078 0.052 0.030
max - - - 0.078 0.056 0.100
med - - - 0.078 0.054 0.042
SRP (mg L-1)
n 0 0 0 1 2 3
min - - - 0.031 0.018 0.007
max - - - 0.031 0.021 0.046
med - - - 0.031 0.020 0.013
DOC (mg L-1)
n 0 0 0 1 2 3
min - - - 8 8 7
max - - - 8 10 11
med - - - 8 9 9
TSS (mg L-1)
n 0 0 0 1 2 3
min - - - 4 1 <1
max - - - 4 2 10
med - - - 4 1.5 2
Swan Canning Catchment Data Report January - June 2015
54 Department of Water
DO (mg L-1)
n 0 0 0 1 2 3
min - - - 2.82 1.78 5.72
max - - - 2.82 5.29 7.49
med - - - 2.82 3.54 6.16
Sp. Conductivity (mS cm-1)
n 0 0 0 1 2 3
min - - - 0.276 0.459 0.402
max - - - 0.276 0.691 1.139
med - - - 0.276 0.575 1.101
Swan Canning Catchment Data Report January - June 2015
6 Blackadder Ck (SWN8)
SWN8 (BLACKADDER) TN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN
(m
g L
-1)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
n=1 n=1 n=4 n=2 n=4 n=8 n=11 n=12 n=10 n=10 n=8 n=7
2010-2014 data
2015 data
Figure 52 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN8 (Blackadder Ck).
SWN8 (BLACKADDER) NH3-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NH
3-N
(m
g L
-1)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
n=1 n=1 n=4 n=2 n=4 n=8 n=11 n=12 n=10 n=10 n=8 n=7
2010-2014 data
2015 data
Figure 53 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN8 (Blackadder Ck).
The 90th Percentile for
July was 2.26mgL-1
The 90th Percentile for
July was 6.26mgL-1
Swan Canning Catchment Data Report January - June 2015
56 Department of Water
SWN8 (BLACKADDER) NOx-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NO
x-N
(m
g L
-1)
0.0
0.5
1.0
1.5
2.0
n=1 n=1 n=4 n=2 n=4 n=8 n=11 n=12 n=10 n=10 n=8 n=7
2010-2014 data
2015 data
Figure 54 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN8 (Blackadder
Ck).
SWN8 (BLACKADDER) DOrgN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
rgN
(m
g L
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
n=1 n=1 n=4 n=2 n=4 n=8 n=11 n=12 n=10 n=10 n=8 n=7
2010-2014 data
2015 data
Figure 55 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN8 (Blackadder
Ck).
The 90th Percentile for
August was 2.77mgL-1
The 90th Percentile for
July was 3.58mgL-1
Swan Canning Catchment Data Report January - June 2015
SWN8 (BLACKADDER) TP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TP
(m
g L
-1)
0.0
0.1
0.2
0.3
0.4
0.5
n=1 n=1 n=4 n=2 n=4 n=8 n=11 n=12 n=10 n=10 n=8 n=7
2010-2014 data
2015 data
Figure 56 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN8 (Blackadder Ck).
SWN8 (BLACKADDER) SRP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
SR
P (
mg L
-1)
0.00
0.05
0.10
0.15
0.20
0.25
n=1 n=1 n=4 n=2 n=4 n=8 n=11 n=12 n=10 n=10 n=8 n=7
2010-2014 data
2015 data
Figure 57 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN8 (Blackadder
Ck).
Swan Canning Catchment Data Report January - June 2015
58 Department of Water
SWN8 (BLACKADDER) DOC
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
C (
mg L
-1)
0
10
20
30
40
50
n=1 n=1 n=4 n=2 n=4 n=8 n=11 n=12 n=10 n=10 n=8 n=7
2010-2014 data
2015 data
Figure 58 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN8 (Blackadder
Ck).
SWN8 (BLACKADDER) TSS
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TS
S (
mg L
-1)
0
10
20
30
40
50
60
70
n=1 n=1 n=4 n=2 n=4 n=8 n=11 n=12 n=10 n=10 n=8 n=7
2010-2014 data
2015 data
Figure 59 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN8 (Blackadder Ck).
Swan Canning Catchment Data Report January - June 2015
SWN8 (BLACKADDER) DO
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
(m
g L
-1)
0
2
4
6
8
10
12
n=1 n=1 n=4 n=2 n=4 n=8 n=11 n=12 n=10 n=10 n=8 n=7
2010-2014 data
2015 data
Figure 60 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN8 (Blackadder Ck).
SWN8 (BLACKADDER) Sp. Conductivity
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sp.
Cond (
mS
cm
-1)
0.0
0.5
1.0
1.5
2.0
2.5
n=1 n=1 n=4 n=2 n=4 n=8 n=11 n=12 n=10 n=10 n=8 n=7
2010-2014 data
2015 data
Figure 61 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN8 (Blackadder Ck).
Swan Canning Catchment Data Report January - June 2015
60 Department of Water
Table 9 2015 monthly sample numbers, minimum and maximum values at SWN8 (Blackadder
Ck).
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN (mg L-1)
n 0 0 0 2 2 3
min - - - 0.57 0.58 0.40
max - - - 0.79 0.70 1.00
med - - - 0.68 0.64 0.68
NH3-N (mg L-1)
n 0 0 0 2 2 3
min - - - 0.018 0.012 0.016
max - - - 0.046 0.042 0.071
med - - - 0.032 0.027 0.043
NOx-N (mg L-1)
n 0 0 0 2 2 3
min - - - 0.012 <0.01 <0.01
max - - - 0.250 0.160 0.36
med - - - 0.131 0.083 0.24
DOrgN (mg L-1)
n 0 0 0 2 2 3
min - - - 0.45 0.49 0.36
max - - - 0.50 0.56 0.61
med - - - 0.48 0.53 0.40
TP (mg L-1)
n 0 0 0 2 2 3
min - - - 0.021 0.04 0.027
max - - - 0.078 0.046 0.076
med - - - 0.050 0.043 0.027
SRP (mg L-1)
n 0 0 0 2 2 3
min - - - 0.021 0.023 0.013
max - - - 0.040 0.023 0.051
med - - - 0.031 0.023 0.013
DOC (mg L-1)
n 0 0 0 2 2 3
min - - - 8 9 8
max - - - 10 10 11
med - - - 9 9.5 8
TSS (mg L-1)
n 0 0 0 2 2 3
min - - - 2 1 2
max - - - 3 1 5
med - - - 2.5 1 2
Swan Canning Catchment Data Report January - June 2015
DO (mg L-1)
n 0 0 0 2 2 3
min - - - 1.49 3.31 3.44
max - - - 4.11 4.98 4.74
med - - - 2.80 4.15 4.54
Sp. Conductivity (mS cm-1)
n 0 0 0 2 2 3
min - - - 0.214 0.913 1.142
max - - - 1.626 1.356 1.402
med - - - 0.920 1.135 1.318
Swan Canning Catchment Data Report January - June 2015
62 Department of Water
7 Canning R (SWS12)
SWS12 (CANNING) TN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN
(m
g L
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 62 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS12 (Canning R).
SWS12 (CANNING) NH3-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NH
3-N
(m
g L
-1)
0.00
0.02
0.04
0.06
0.08
0.10
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 63 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS12 (Canning R).
The 90th Percentile for
Nov was 0.26mgL-1
Swan Canning Catchment Data Report January - June 2015
SWS12 (CANNING) NOx-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NO
x-N
(m
g L
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 64 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS12 (Canning R).
SWS12 (CANNING) DOrgN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
rgN
(m
g L
-1)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 65 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS12 (Canning R).
Swan Canning Catchment Data Report January - June 2015
64 Department of Water
SWS12 (CANNING) TP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TP
(m
g L
-1)
0.00
0.02
0.04
0.06
0.08
0.10
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 66 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS12 (Canning R).
SWS12 (CANNING) SRP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
SR
P (
mg L
-1)
0.000
0.005
0.010
0.015
0.020
0.025
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 67 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS12 (Canning R).
Swan Canning Catchment Data Report January - June 2015
SWS12 (CANNING) DOC
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
C (
mg L
-1)
0
2
4
6
8
10
12
14
16
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 68 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS12 (Canning R).
SWS12 (CANNING) TSS
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TS
S (
mg L
-1)
0
5
10
15
20
25
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 69 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS12 (Canning R).
The 90th Percentile for
Sept was 44mgL-1
The 90th Percentile for
June was 65mgL-1
Swan Canning Catchment Data Report January - June 2015
66 Department of Water
SWS12 (CANNING) DO
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
(m
g L
-1)
0
2
4
6
8
10
12
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 70 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS12 (Canning).
SWS12 (CANNING) Sp. Conductivity
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sp.
Cond (
mS
cm
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 71 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS12 (Canning R).
Swan Canning Catchment Data Report January - June 2015
Table 10 2015 monthly sample numbers, minimum and maximum values at SWS12 (Canning R).
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN (mg L-1)
n 2 2 2 2 2 3
min 0.17 0.19 0.20 0.18 0.24 0.39
max 0.26 0.30 0.22 0.29 0.89 0.87
med - - - 0.24 0.57 0.46
NH3-N (mg L-1)
n 2 2 2 2 2 3
min 0.013 <0.01 0.017 <0.01 0.018 0.023
max 0.032 0.014 0.025 0.023 0.045 0.078
med - - - 0.014 0.032 0.042
NOx-N (mg L-1)
n 2 2 2 2 2 3
min 0.017 <0.01 0.011 0.038 0.016 0.16
max 0.020 0.019 0.020 0.099 0.540 0.35
med - - - 0.069 0.278 0.24
DOrgN (mg L-1)
n 2 2 2 2 2 3
min 0.14 0.17 0.16 0.11 0.18 0.14
max 0.19 0.19 0.17 0.17 0.25 0.38
med - - - 0.14 0.22 0.16
TP (mg L-1)
n 2 2 2 2 2 3
min 0.011 0.009 0.008 <0.005 <0.005 0.011
max 0.014 0.013 0.008 0.016 0.020 0.037
med - - - 0.009 0.011 0.016
SRP (mg L-1)
n 2 2 2 2 2 3
min <0.005 <0.005 <0.005 <0.005 <0.005 0.006
max <0.005 0.01 <0.005 0.007 0.006 0.020
med - - - 0.005 0.004 0.006
DOC (mg L-1)
n 2 2 2 2 2 3
min 3 4 3 3 3 3
max 3 4 3 5 6 5
med - - - 4 4.5 3
TSS (mg L-1)
n 2 2 2 2 2 3
min 1 2 1 1 1 1
max 1 3 1 2 4 15
med - - - 1.5 2.5 4
Swan Canning Catchment Data Report January - June 2015
68 Department of Water
DO (mg L-1)
n 2 2 2 2 2 3
min 3.18 2.38 3.28 4.97 6.52 6.49
max 4.18 3.81 5.42 5.51 7.16 8.30
med - - - 5.24 6.84 7.79
Sp. Conductivity (mS cm-1)
n 2 2 2 2 2 3
min 0.544 0.582 0.600 0.500 0.578 0.620
max 0.675 0.584 0.606 0.589 0.740 0.826
med - - - 0.545 0.659 0.729
Swan Canning Catchment Data Report January - June 2015
8 Ellen Bk (SWN3)
SWN3 (ELLEN BK) TN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN
(m
g L
-1)
0
1
2
3
4
5
n=0 n=0 n=0 n=0 n=0 n=3 n=11 n=12 n=10 n=9 n=6 n=3
2010-2014 data
2015 data
Figure 72 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN3 (Ellen Bk).
SWN3 (ELLEN BK) NH3-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NH
3-N
(m
g L
-1)
0.0
0.1
0.2
0.3
0.4
0.5
n=0 n=0 n=0 n=0 n=0 n=3 n=11 n=12 n=10 n=9 n=6 n=3
2010-2014 data
2015 data
Figure 73 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN3 (Ellen Bk).
Swan Canning Catchment Data Report January - June 2015
70 Department of Water
SWN3 (ELLEN BK) NOx-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NO
x-N
(m
g L
-1)
0.00
0.05
0.10
0.15
0.20
0.25
n=0 n=0 n=0 n=0 n=0 n=3 n=11 n=12 n=10 n=9 n=6 n=3
2010-2014 data
2015 data
Figure 74 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN3 (Ellen Bk).
SWN3 (ELLEN BK) DOrgN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
rgN
(m
g L
-1)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
n=0 n=0 n=0 n=0 n=0 n=3 n=11 n=12 n=10 n=9 n=6 n=3
2010-2014 data
2015 data
Figure 75 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN3 (Ellen Bk).
Swan Canning Catchment Data Report January - June 2015
SWN3 (ELLEN BK) TP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TP
(m
g L
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
n=0 n=0 n=0 n=0 n=0 n=3 n=11 n=12 n=10 n=9 n=6 n=3
2010-2014 data
2015 data
Figure 76 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN3 (Ellen Bk).
SWN3 (ELLEN BK) SRP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
SR
P (m
g L
-1)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
n=0 n=0 n=0 n=0 n=0 n=3 n=11 n=12 n=10 n=9 n=6 n=3
2010-2014 data
2015 data
Figure 77 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN3 (Ellen Bk).
Swan Canning Catchment Data Report January - June 2015
72 Department of Water
SWN3 (ELLEN BK) DOC
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
C (
mg L
-1)
0
10
20
30
40
50
60
70
80
n=0 n=0 n=0 n=0 n=0 n=3 n=11 n=12 n=10 n=9 n=6 n=3
2010-2014 data
2015 data
Figure 78 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN3 (Ellen Bk).
SWN3 (ELLEN BK) TSS
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TS
S (
mg L
-1)
0
10
20
30
40
50
n=0 n=0 n=0 n=0 n=0 n=3 n=11 n=12 n=10 n=9 n=6 n=3
2010-2014 data
2015 data
Figure 79 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN3 (Ellen Bk).
Swan Canning Catchment Data Report January - June 2015
SWN3 (ELLEN BK) DO
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
(m
g L
-1)
0
2
4
6
8
10
12
14
n=0 n=0 n=0 n=0 n=0 n=3 n=11 n=12 n=10 n=9 n=6 n=3
2010-2014 data
2015 data
Figure 80 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN3 (Ellen Bk).
SWN3 (ELLEN BK) Sp. Conductivity
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sp.
Cond (
mS
cm
-1)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
n=0 n=0 n=0 n=0 n=0 n=3 n=11 n=12 n=10 n=9 n=6 n=3
2010-2014 data
2015 data
Figure 81 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN3 (Ellen Bk).
Swan Canning Catchment Data Report January - June 2015
74 Department of Water
Table 11 2015 monthly sample numbers, minimum and maximum values at SWN3 (Ellen Bk).
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN (mg L-1)
n 0 0 0 0 0 1
min - - - - - 2.3
max - - - - - 2.3
med - - - - - 2.3
NH3-N (mg L-1)
n 0 0 0 0 0 1
min - - - - - 0.18
max - - - - - 0.18
med - - - - - 0.18
NOx-N (mg L-1)
n 0 0 0 0 0 1
min - - - - - 0.024
max - - - - - 0.024
med - - - - - 0.024
DOrgN (mg L-1)
n 0 0 0 0 0 1
min - - - - - 1.5
max - - - - - 1.5
med - - - - - 1.5
TP (mg L-1)
n 0 0 0 0 0 1
min - - - - - 0.3
max - - - - - 0.3
med - - - - - 0.3
SRP (mg L-1)
n 0 0 0 0 0 1
min - - - - - 0.1
max - - - - - 0.1
med - - - - - 0.1
DOC (mg L-1)
n 0 0 0 0 0 1
min - - - - - 30
max - - - - - 30
med - - - - - 30
TSS (mg L-1)
n 0 0 0 0 0 1
min - - - - - 25
max - - - - - 25
med - - - - - 25
Swan Canning Catchment Data Report January - June 2015
DO (mg L-1)
n 0 0 0 0 0 1
min - - - - - 7.24
max - - - - - 7.24
med - - - - - 7.24
Sp. Conductivity (mS cm-1)
n 0 0 0 0 0 1
min - - - - - 3.669
max - - - - - 3.669
med - - - - - 3.669
Swan Canning Catchment Data Report January - June 2015
76 Department of Water
9 Helena R (SWN10)
SWN10 (HELENA) TN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN
(m
g L
-1)
0.0
0.5
1.0
1.5
2.0
2.5
n=1 n=1 n=0 n=0 n=1 n=6 n=12 n=12 n=10 n=9 n=8 n=7
2010-2014 data
2015 data
Figure 82 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN10 (Helena R).
SWN10 (HELENA) NH3-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NH
3-N
(m
g L
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
n=1 n=1 n=0 n=0 n=1 n=6 n=12 n=12 n=10 n=9 n=8 n=7
2010-2014 data
2015 data
Figure 83 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN10 (Helena R).
Swan Canning Catchment Data Report January - June 2015
SWN10 (HELENA) NOx-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NO
x-N
(m
g L
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
n=1 n=1 n=0 n=0 n=1 n=6 n=12 n=12 n=10 n=9 n=8 n=7
2010-2014 data
2015 data
Figure 84 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN10 (Helena R).
SWN10 (HELENA) DOrgN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
rgN
(m
g L
-1)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
n=1 n=1 n=0 n=0 n=1 n=6 n=12 n=12 n=10 n=9 n=8 n=7
2010-2014 data
2015 data
Figure 85 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN10 (Helena R).
Swan Canning Catchment Data Report January - June 2015
78 Department of Water
SWN10 (HELENA) TP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TP
(m
g L
-1)
0.00
0.01
0.02
0.03
0.04
0.05
0.06
n=1 n=1 n=0 n=0 n=1 n=6 n=12 n=12 n=10 n=9 n=8 n=7
2010-2014 data
2015 data
Figure 86 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN10 (Helena R).
SWN10 (HELENA) SRP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
SR
P (
mg L
-1)
0.000
0.005
0.010
0.015
0.020
n=1 n=1 n=0 n=0 n=1 n=6 n=12 n=12 n=10 n=9 n=8 n=7
2010-2014 data
2015 data
Figure 87 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN10 (Helena R).
Swan Canning Catchment Data Report January - June 2015
SWN10 (HELENA) DOC
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
C (
mg L
-1)
0
2
4
6
8
10
12
14
n=1 n=1 n=0 n=0 n=1 n=6 n=12 n=12 n=10 n=9 n=8 n=7
2010-2014 data
2015 data
Figure 88 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN10 (Helena R).
SWN10 (HELENA) TSS
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TS
S (
mg L
-1)
0
5
10
15
20
25
30
n=1 n=1 n=0 n=0 n=1 n=6 n=12 n=12 n=10 n=9 n=8 n=7
2010-2014 data
2015 data
Figure 89 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN10 (Helena R).
The 90th Percentile for
July was 36mgL-1
Swan Canning Catchment Data Report January - June 2015
80 Department of Water
SWN10 (HELENA) DO
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
(m
g L
-1)
0
2
4
6
8
10
12
n=1 n=1 n=0 n=0 n=1 n=6 n=12 n=12 n=10 n=9 n=8 n=7
2010-2014 data
2015 data
Figure 90 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN10 (Helena R).
SWN10 (HELENA) Sp. Conductivity
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sp.
Cond (
mS
cm
-1)
0.0
0.5
1.0
1.5
2.0
2.5
n=1 n=1 n=0 n=0 n=1 n=6 n=12 n=12 n=10 n=9 n=8 n=7
2010-2014 data
2015 data
Figure 91 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN10 (Helena R).
Swan Canning Catchment Data Report January - June 2015
Table 12 2015 monthly sample numbers, minimum and maximum values at SWN10 (Helena R).
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN (mg L-1)
n 0 0 0 0 1 3
min - - - - 1.00 0.98
max - - - - 1.00 2.40
med - - - - 1.00 1.60
NH3-N (mg L-1)
n 0 0 0 0 1 3
min - - - - 0.32 0.60
max - - - - 0.32 1.30
med - - - - 0.32 1.10
NOx-N (mg L-1)
n 0 0 0 0 1 3
min - - - - 0.29 <0.01
max - - - - 0.29 0.023
med - - - - 0.29 0.014
DOrgN (mg L-1)
n 0 0 0 0 1 3
min - - - - 0.34 0.36
max - - - - 0.34 0.50
med - - - - 0.34 0.41
TP (mg L-1)
n 0 0 0 0 1 3
min - - - - 0.022 <0.005
max - - - - 0.022 0.031
med - - - - 0.022 0.017
SRP (mg L-1)
n 0 0 0 0 1 3
min - - - - 0.009 <0.005
max - - - - 0.009 0.008
med - - - - 0.009 0.006
DOC (mg L-1)
n 0 0 0 0 1 3
min - - - - 8 8
max - - - - 8 14
med - - - - 8 9
TSS (mg L-1)
n 0 0 0 0 1 3
min - - - - 2 6
max - - - - 2 54
med - - - - 2 16
Swan Canning Catchment Data Report January - June 2015
82 Department of Water
DO (mg L-1)
n 0 0 0 0 1 3
min - - - - 3.78 0.45
max - - - - 3.78 2.87
med - - - - 3.78 2.50
Sp. Conductivity (mS cm-1)
n 0 0 0 0 1 3
min - - - - 1.108 1.156
max - - - - 1.108 1.762
med - - - - 1.108 1.563
Swan Canning Catchment Data Report January - June 2015
10 Jane Bk (SWN7)
SWN7 (JANE BK) TN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN
(m
g L
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
n=0 n=0 n=0 n=0 n=0 n=6 n=12 n=12 n=10 n=10 n=7 n=6
2010-2014 data
2015 data
Figure 92 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN7 (Jane Bk).
SWN7 (JANE BK) NH3-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NH
3-N
(m
g L
-1)
0.00
0.05
0.10
0.15
0.20
n=0 n=0 n=0 n=0 n=0 n=6 n=12 n=12 n=10 n=10 n=7 n=6
2010-2014 data
2015 data
Figure 93 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN7 (Jane Bk).
Swan Canning Catchment Data Report January - June 2015
84 Department of Water
SWN7 (JANE BK) NOx-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NO
x-N
(m
g L
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
n=0 n=0 n=0 n=0 n=0 n=6 n=12 n=12 n=10 n=10 n=7 n=6
2010-2014 data
2015 data
Figure 94 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN7 (Jane Bk).
SWN7 (JANE BK) DOrgN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
rgN
(m
g L
-1)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
n=0 n=0 n=0 n=0 n=0 n=6 n=12 n=12 n=10 n=10 n=7 n=6
2010-2014 data
2015 data
Figure 95 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN7 (Jane Bk).
Swan Canning Catchment Data Report January - June 2015
SWN7 (JANE BK) TP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TP
(m
g L
-1)
0.00
0.02
0.04
0.06
0.08
0.10
n=0 n=0 n=0 n=0 n=0 n=6 n=12 n=12 n=10 n=10 n=7 n=6
2010-2014 data
2015 data
Figure 96 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN7 (Jane Bk).
SWN7 (JANE BK) SRP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
SR
P (
mg L
-1)
0.00
0.01
0.02
0.03
0.04
0.05
0.06
n=0 n=0 n=0 n=0 n=0 n=6 n=12 n=12 n=10 n=10 n=7 n=6
2010-2014 data
2015 data
Figure 97 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN7 (Jane Bk).
Swan Canning Catchment Data Report January - June 2015
86 Department of Water
SWN7 (JANE BK) DOC
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
C (
mg L
-1)
0
2
4
6
8
10
12
n=0 n=0 n=0 n=0 n=0 n=6 n=12 n=12 n=10 n=10 n=7 n=6
2010-2014 data
2015 data
Figure 98 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN7 (Jane Bk).
SWN7 (JANE BK) TSS
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TS
S (
mg L
-1)
0
5
10
15
20
25
30
n=0 n=0 n=0 n=0 n=0 n=6 n=12 n=12 n=10 n=10 n=6 n=6
2010-2014 data
2015 data
Figure 99 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN7 (Jane Bk).
Swan Canning Catchment Data Report January - June 2015
SWN7 (JANE BK) DO
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
(m
g L
-1)
0
2
4
6
8
10
12
n=0 n=0 n=0 n=0 n=0 n=6 n=12 n=12 n=10 n=10 n=7 n=6
2010-2014 data
2015 data
Figure 100 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN7 (Jane Bk).
SWN7 (JANE BK) Sp. Conductivity
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sp.
Cond (
mS
cm
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
n=0 n=0 n=0 n=0 n=0 n=6 n=12 n=12 n=10 n=10 n=7 n=6
2010-2014 data
2015 data
Figure 101 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN7 (Jane Bk).
Swan Canning Catchment Data Report January - June 2015
88 Department of Water
Table 13 2015 monthly sample numbers, minimum and maximum values at SWN7 (Jane Bk).
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN (mg L-1)
n 0 0 0 0 0 1
min - - - - - 0.37
max - - - - - 0.37
med - - - - - 0.37
NH3-N (mg L-1)
n 0 0 0 0 0 1
min - - - - - 0.028
max - - - - - 0.028
med - - - - - 0.028
NOx-N (mg L-1)
n 0 0 0 0 0 1
min - - - - - <0.01
max - - - - - <0.01
med - - - - - <0.01
DOrgN (mg L-1)
n 0 0 0 0 0 1
min - - - - - 0.29
max - - - - - 0.29
med - - - - - 0.29
TP (mg L-1)
n 0 0 0 0 0 1
min - - - - - 0.019
max - - - - - 0.019
med - - - - - 0.019
SRP (mg L-1)
n 0 0 0 0 0 1
min - - - - - 0.01
max - - - - - 0.01
med - - - - - 0.01
DOC (mg L-1)
n 0 0 0 0 0 1
min - - - - - 7
max - - - - - 7
med - - - - - 7
TSS (mg L-1)
n 0 0 0 0 0 1
min - - - - - 2
max - - - - - 2
med - - - - - 2
Swan Canning Catchment Data Report January - June 2015
DO (mg L-1)
n 0 0 0 0 0 1
min - - - - - 2.36
max - - - - - 2.36
med - - - - - 2.36
Sp. Conductivity (mS cm-1)
n 0 0 0 0 0 1
min - - - - - 0.787
max - - - - - 0.787
med - - - - - 0.787
Swan Canning Catchment Data Report January - June 2015
90 Department of Water
11 Mills Street MD (SWS1)
SWS1 (MILLS ST) TN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN
(m
g L
-1)
0.0
0.5
1.0
1.5
2.0
2.5
n=12 n=10 n=10 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 102 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS1 (Mills St MD).
SWS1 (MILLS ST) NH3-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NH
3-N
(m
g L
-1)
0.0
0.1
0.2
0.3
0.4
0.5
n=12 n=10 n=10 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 103 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS1 (Mills St MD).
Swan Canning Catchment Data Report January - June 2015
SWS1 (MILLS ST) NOx-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NO
x-N
(m
g L
-1)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
n=12 n=10 n=10 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 104 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS1 (Mills St MD).
SWS1 (MILLS ST) DOrgN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
rgN
(m
g L
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
n=12 n=10 n=10 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 105 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS1 (Mills St MD).
Swan Canning Catchment Data Report January - June 2015
92 Department of Water
SWS1 (MILLS ST) TP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TP
(m
g L
-1)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
n=12 n=10 n=10 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 106 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS1 (Mills St MD).
SWS1 (MILLS ST) SRP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
SR
P (
mgL
-1)
0.00
0.02
0.04
0.06
0.08
0.10
0.12
0.14
0.16
0.18
n=12 n=10 n=10 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 107 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS1 (Mills St
MD).
The 90th Percentile for
June was 0.55mgL-1
The 90th Percentile for
Aug was 0.22mgL-1
Swan Canning Catchment Data Report January - June 2015
SWS1 (MILLS ST) DOC
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
C (
mg L
-1)
0
5
10
15
20
25
n=12 n=10 n=10 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 108 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS1 (Mills St MD).
SWS1 (MILLS ST) TSS
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TS
S (
mg L
-1)
0
5
10
15
20
25
30
n=12 n=10 n=10 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 109 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS1 (Mills St MD).
The 90th Percentile for
June was 201mgL-1
Swan Canning Catchment Data Report January - June 2015
94 Department of Water
SWS1 (MILLS ST) DO
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
(m
g L
-1)
0
2
4
6
8
10
n=12 n=10 n=10 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 110 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS1 (Mills St MD).
SWS1 (MILLS ST) Sp. Conductivity
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sp.
Cond (
mS
cm
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
n=12 n=10 n=10 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 111 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS1 (Mills St MD).
Swan Canning Catchment Data Report January - June 2015
Table 14 2015 monthly sample numbers, minimum and maximum values at SWS1 (Mills St MD).
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN (mg L-1)
n 2 2 2 2 2 3
min 0.88 0.97 0.78 1.1 0.58 1.1
max 1.70 1.10 1.10 1.1 1.70 1.8
med - - - 1.1 1.14 1.4
NH3-N (mg L-1)
n 2 2 2 2 2 3
min <0.01 0.019 0.014 0.064 0.087 0.22
max 0.65 0.110 0.130 0.210 0.390 0.33
med - - - 0.137 0.239 0.31
NOx-N (mg L-1)
n 2 2 2 2 2 3
min 0.011 0.033 0.010 0.12 0.17 0.29
max 0.084 0.076 0.099 0.18 0.43 0.54
med - - - 0.15 0.30 0.36
DOrgN (mg L-1)
n 2 2 2 2 2 3
min 0.58 0.59 0.55 0.47 0.24 0.51
max 0.62 0.60 0.61 0.49 0.62 0.60
med - - - 0.48 0.43 0.54
TP (mg L-1)
n 2 2 2 2 2 3
min 0.12 0.16 0.14 0.085 0.096 0.097
max 0.12 0.18 0.17 0.240 0.098 0.310
med - - - 0.163 0.097 0.098
SRP (mg L-1)
n 2 2 2 2 2 3
min 0.025 0.045 0.033 0.026 0.032 0.024
max 0.026 0.059 0.059 0.076 0.049 0.073
med - - - 0.051 0.041 0.037
DOC (mg L-1)
n 2 2 2 2 2 3
min 14 15 15 9 5 11
max 19 16 16 11 11 20
med - - - 10 8 13
TSS (mg L-1)
n 2 2 2 2 2 3
min 12 8 7 7 4 3
max 12 13 18 24 4 20
med - - - 15.5 4 8
Swan Canning Catchment Data Report January - June 2015
96 Department of Water
DO (mg L-1)
n 2 2 2 2 2 3
min 1.96 3.25 4.56 4.93 6.95 6.04
max 2.85 4.46 4.97 6.54 8.19 8.30
med - - - 5.74 7.57 6.41
Sp. Conductivity (mS cm-1)
n 2 2 2 2 2 3
min 0.813 0.537 0.608 0.189 0.174 0.254
max 0.834 0.767 0.760 0.656 0.535 0.716
med - - - 0.423 0.355 0.650
Swan Canning Catchment Data Report January - June 2015
12 S. Belmont MD (SWS13)
SWS13 (S.BELMONT) TN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN
(m
g L
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 112 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS13 (S. Belmont MD).
SWS13 (S.BELMONT) NH3-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NH
3-N
(m
g L
-1)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 113 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS13 (S. Belmont MD).
The 90th Percentile for
Feb was 3.85mgL-1
Swan Canning Catchment Data Report January - June 2015
98 Department of Water
SWS13 (S.BELMONT) NOx-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NO
x-N
(m
g L
-1)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 114 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS13 (S. Belmont
MD).
SWS13 (S.BELMONT) DOrgN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
rgN
(m
g L
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 115 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS13 (S. Belmont
MD).
The 90th Percentile for
Feb was 3.29mgL-1
Swan Canning Catchment Data Report January - June 2015
SWS13 (S.BELMONT) TP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TP
(m
g L
-1)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 116 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS13 (S. Belmont MD).
SWS13 (S.BELMONT) SRP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
SR
P (
mg L
-1)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 117 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS13 (S. Belmont
MD).
Swan Canning Catchment Data Report January - June 2015
100 Department of Water
SWS13 (S.BELMONT) DOC
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
C (
mg L
-1)
0
5
10
15
20
25
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 118 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS13 (S. Belmont
MD).
SWS13 (S.BELMONT) TSS
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TS
S (
mg L
-1)
0
5
10
15
20
25
30
35
40
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 119 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS13 (S. Belmont MD).
The 90th Percentile for
Feb was 168mgL-1
Swan Canning Catchment Data Report January - June 2015
SWS13 (S.BELMONT) DO
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
(m
g L
-1)
0
2
4
6
8
10
12
n=12 n=9 n=12 n=10 n=10 n=9 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 120 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS13 (S. Belmont MD).
SWS13 (S.BELMONT) Sp. Conductivity
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sp.
Cond (
mS
cm
-1)
0.0
0.5
1.0
1.5
2.0
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 121 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS13 (S. Belmont MD).
The 90th Percentile for
March was 2.98mScm-1
The 90th Percentile for
Feb was 3.72mScm-1
Swan Canning Catchment Data Report January - June 2015
102 Department of Water
Table 15 2015 monthly sample numbers, minimum and maximum values at SWS13 (S. Belmont MD).
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN (mg L-1)
n 2 2 2 2 2 3
min 0.46 0.56 0.53 0.54 0.82 0.84
max 0.54 0.72 0.64 0.75 0.84 1.00
med - - - 0.65 0.83 0.90
NH3-N (mg L-1)
n 2 2 2 2 2 3
min 0.020 0.035 0.047 0.038 0.13 0.081
max 0.043 0.064 0.072 0.088 0.20 0.140
med - - - 0.063 0.17 0.140
NOx-N (mg L-1)
n 2 2 2 2 2 3
min 0.046 0.064 0.087 0.065 0.10 0.15
max 0.066 0.080 0.091 0.130 0.12 0.22
med - - - 0.098 0.11 0.21
DOrgN (mg L-1)
n 2 2 2 2 2 3
min 0.35 0.40 0.37 0.31 0.45 0.53
max 0.45 0.55 0.40 0.51 0.60 0.63
med - - - 0.41 0.53 0.58
TP (mg L-1)
n 2 2 2 2 2 3
min 0.14 0.17 0.10 0.094 0.110 0.12
max 0.15 0.40 0.14 0.140 0.120 0.15
med - - - 0.117 0.115 0.13
SRP (mg L-1)
n 2 2 2 2 2 3
min 0.095 0.12 0.067 0.037 0.075 0.066
max 0.100 0.31 0.090 0.100 0.078 0.100
med - - - 0.069 0.077 0.078
DOC (mg L-1)
n 2 2 2 2 2 3
min 11 12 11 8 11 11
max 13 14 12 12 12 17
med - - - 10 11.5 13
TSS (mg L-1)
n 2 2 2 2 2 3
min 1 2 1 2 2 3
max 1 2 1 2 2 4
med - - - 2 2 3
DO (mg L-1)
Swan Canning Catchment Data Report January - June 2015
n 2 2 2 2 2 3
min 4.16 4.20 4.71 4.71 5.27 5.77
max 4.52 5.68 5.66 5.11 7.33 6.27
med - - - 4.91 6.30 5.82
Sp. Conductivity (mS cm-1)
n 2 2 2 2 2 3
min 0.654 0.650 0.634 0.315 0.587 0.478
max 0.694 0.679 0.646 0.723 0.684 0.768
med - - - 0.519 0.636 0.762
Swan Canning Catchment Data Report January - June 2015
104 Department of Water
13 Southern R (SWS7)
SWS7 (SOUTHERN R.) TN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN
(m
g L
-1)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 122 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS7 (Southern R).
SWS7 (SOUTHERN R.) NH3-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NH
3-N
(m
g L
-1)
0.00
0.02
0.04
0.06
0.08
0.10
0.12
0.14
0.16
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 123 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS7 (Southern R).
The 90th Percentile for
March was 0.55mgL-1
The 90th Percentile for
May was 0.37mgL-1
Swan Canning Catchment Data Report January - June 2015
SWS7 (SOUTHERN R.) NOx-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NO
x-N
(m
g L
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 124 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS7 (Southern R).
SWS7 (SOUTHERN R.) DOrgN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
rgN
(m
g L
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 125 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS7 (Southern R).
Swan Canning Catchment Data Report January - June 2015
106 Department of Water
SWS7 (SOUTHERN R.) TP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TP
(m
g L
-1)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 126 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS7 (Southern R).
SWS7 (SOUTHERN R.) SRP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
SR
P (
mg L
-1)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 127 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS7 (Southern R).
The 90th Percentile for
March was 0.51mgL-1
Swan Canning Catchment Data Report January - June 2015
SWS7 (SOUTHERN R.) DOC
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
C (
mg L
-1)
0
5
10
15
20
25
30
35
40
45
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 128 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS7 (Southern R).
SWS7 (SOUTHERN R.) TSS
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TS
S (
mg L
-1)
0
5
10
15
20
25
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 129 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS7 (Southern R).
The 90th Percentile for
July was 33mgL-1
Swan Canning Catchment Data Report January - June 2015
108 Department of Water
SWS7 (SOUTHERN R.) DO
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
(m
g L
-1)
0
2
4
6
8
10
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=9 n=12
2010-2014 data
2015 data
Figure 130 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS7 (Southern R).
SWS7 (SOUTHERN R.) Sp. Conductivity
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sp.
Cond (
mS
cm
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
n=12 n=10 n=12 n=10 n=10 n=10 n=13 n=12 n=10 n=10 n=9 n=12
2010-2014 data
2015 data
Figure 131 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS7 (Southern R).
Swan Canning Catchment Data Report January - June 2015
Table 16 2015 monthly sample numbers, minimum and maximum values at SWS7 (Southern R).
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN (mg L-1)
n 2 2 2 2 2 3
min 0.72 0.86 0.7 0.65 0.84 0.91
max 0.97 1.10 1.1 1.00 1.10 1.80
med - - - 0.83 0.97 1.10
NH3-N (mg L-1)
n 2 2 2 2 2 3
min 0.04 0.053 0.050 0.033 0.033 0.046
max 0.04 0.056 0.067 0.070 0.053 0.092
med - - - 0.052 0.043 0.052
NOx-N (mg L-1)
n 2 2 2 2 2 3
min 0.14 0.11 0.062 0.14 0.084 0.18
max 0.17 0.15 0.140 0.16 0.380 0.85
med - - - 0.15 0.232 0.30
DOrgN (mg L-1)
n 2 2 2 2 2 3
min 0.54 0.65 0.51 0.35 0.55 0.52
max 0.69 0.75 0.85 0.79 0.66 0.85
med - - - 0.57 0.61 0.83
TP (mg L-1)
n 2 2 2 2 2 3
min 0.22 0.20 0.16 0.120 0.110 0.082
max 0.24 0.20 0.20 0.130 0.140 0.100
med - - - 0.125 0.125 0.100
SRP (mg L-1)
n 2 2 2 2 2 3
min 0.15 0.14 0.13 0.061 0.064 0.052
max 0.16 0.14 0.13 0.100 0.095 0.062
med - - - 0.081 0.080 0.053
DOC (mg L-1)
n 2 2 2 2 2 3
min 20 21 18 10 12 10
max 21 22 30 24 20 25
med - - - 17 16 23
TSS (mg L-1)
n 2 2 2 2 2 3
min 3 4 2 4 <1 2
max 3 5 3 8 15 7
med - - - 6 7.75 3
Swan Canning Catchment Data Report January - June 2015
110 Department of Water
DO (mg L-1)
n 2 2 2 2 2 3
min 2.22 2.01 1.98 3.52 4.40 5.88
max 3.61 2.30 2.96 3.98 7.43 7.23
med - - - 3.75 5.92 6.58
Sp. Conductivity (mS cm-1)
n 2 2 2 2 2 3
min 0.959 0.835 0.964 0.410 0.434 0.355
max 0.983 0.937 1.083 0.996 0.927 0.781
med - - - 0.703 0.681 0.771
Swan Canning Catchment Data Report January - June 2015
14 Susannah Bk (SWN11)
SWN11 (SUSANNAH BK) TN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN
(m
g L
-1)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
n=0 n=0 n=0 n=0 n=0 n=2 n=10 n=12 n=9 n=8 n=5 n=1
2010-2014 data
2015 data
Figure 132 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN11 (Susannah Bk).
SWN11 (SUSANNAH BK) NH3-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NH
3-N
(m
g L
-1)
0.00
0.02
0.04
0.06
0.08
0.10
0.12
n=0 n=0 n=0 n=0 n=0 n=2 n=10 n=12 n=9 n=8 n=5 n=1
2010-2014 data
2015 data
Figure 133 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN11 (Susannah Bk).
The 90th Percentile for
July was 4.22mgL-1
Swan Canning Catchment Data Report January - June 2015
112 Department of Water
SWN11 (SUSANNAH BK) NOx-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NO
x-N
(m
g L
-1)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
n=0 n=0 n=0 n=0 n=0 n=2 n=10 n=12 n=9 n=8 n=5 n=1
2010-2014 data
2015 data
Figure 134 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN11 (Susannah
Bk).
SWN11 (SUSANNAH BK) DOrgN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
rgN
(m
g L
-1)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
n=0 n=0 n=0 n=0 n=0 n=2 n=10 n=12 n=9 n=8 n=5 n=1
2010-2014 data
2015 data
Figure 135 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN11 (Susannah
Bk).
The 90th Percentile for
July was 4.08mgL-1
Swan Canning Catchment Data Report January - June 2015
SWN11 (SUSANNAH BK) TP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TP
(m
g L
-1)
0.00
0.02
0.04
0.06
0.08
0.10
n=0 n=0 n=0 n=0 n=0 n=2 n=10 n=12 n=9 n=8 n=5 n=1
2010-2014 data
2015 data
Figure 136 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN11 (Susannah Bk).
SWN11 (SUSANNAH BK) SRP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
SR
P (
mg L
-1)
0.000
0.005
0.010
0.015
0.020
0.025
n=0 n=0 n=0 n=0 n=0 n=2 n=10 n=12 n=9 n=8 n=5 n=1
2010-2014 data
2015 data
Figure 137 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN11 (Susannah
Bk).
The 90th Percentile for
July was 0.173mgL-1
Swan Canning Catchment Data Report January - June 2015
114 Department of Water
SWN11 (SUSANNAH BK) DOC
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
C (
mg L
-1)
0
5
10
15
20
25
n=0 n=0 n=0 n=0 n=0 n=2 n=10 n=12 n=9 n=8 n=5 n=1
2010-2014 data
2015 data
Figure 138 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWN11 (Susannah
Bk).
SWN11 (SUSANNAH BK) TSS
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TS
S (
mg L
-1)
0
10
20
30
40
50
60
70
80
90
n=0 n=0 n=0 n=0 n=0 n=2 n=10 n=12 n=9 n=8 n=5 n=1
2010-2014 data
2015 data
Figure 139 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN11 (Susannah Bk).
The 90th Percentile for
July was 243mgL-1
Swan Canning Catchment Data Report January - June 2015
SWN11 (SUSANNAH BK) DO
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
(m
g L
-1)
0
2
4
6
8
10
12
n=0 n=0 n=0 n=0 n=0 n=2 n=10 n=12 n=9 n=8 n=5 n=1
2010-2014 data
2015 data
Figure 140 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN11 (Susannah Bk).
SWN11 (SUSANNAH BK) Sp. Conductivity
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sp.
Cond (
mS
cm
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
n=0 n=0 n=0 n=0 n=0 n=2 n=10 n=12 n=9 n=8 n=5 n=1
2010-2014 data
2015 data
Figure 141 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWN11 (Susannah Bk).
Swan Canning Catchment Data Report January - June 2015
116 Department of Water
Table 17 2015 monthly sample numbers, minimum and maximum values at SWN11 (Susannah Bk).
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN (mg L-1)
n 0 0 0 0 0 0
min - - - - - -
max - - - - - -
med - - - - - -
NH3-N (mg L-1)
n 0 0 0 0 0 0
min - - - - - -
max - - - - - -
med - - - - - -
NOx-N (mg L-1)
n 0 0 0 0 0 0
min - - - - - -
max - - - - - -
med - - - - - -
DOrgN (mg L-1)
n 0 0 0 0 0 0
min - - - - - -
max - - - - - -
med - - - - - -
TP (mg L-1)
n 0 0 0 0 0 0
min - - - - - -
max - - - - - -
med - - - - - -
SRP (mg L-1)
n 0 0 0 0 0 0
min - - - - - -
max - - - - - -
med - - - - - -
DOC (mg L-1)
n 0 0 0 0 0 0
min - - - - - -
max - - - - - -
med - - - - - -
TSS (mg L-1)
n 0 0 0 0 0 0
min - - - - - -
max - - - - - -
med - - - - - -
Swan Canning Catchment Data Report January - June 2015
DO (mg L-1)
n 0 0 0 0 0 0
min - - - - - -
max - - - - - -
med - - - - - -
Sp. Conductivity (mS cm-1)
n 0 0 0 0 0 0
min - - - - - -
max - - - - - -
med - - - - - -
Swan Canning Catchment Data Report January - June 2015
118 Department of Water
15 Yule Bk (SWS3)
SWS3 (YULE BK) TN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN
(m
g L
-1)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
n=11 n=5 n=6 n=9 n=9 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 142 2015 Total Nitrogen (TN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS3 (Yule Bk).
SWS3 (YULE BK) NH3-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NH
3-N
(m
g L
-1)
0.0
0.5
1.0
1.5
2.0
n=11 n=5 n=6 n=9 n=9 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 143 2015 Ammonium Nitrogen (NH3-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS3 (Yule Bk).
Swan Canning Catchment Data Report January - June 2015
SWS3 (YULE BK) NOx-N
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
NO
x-N
(m
g L
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
n=11 n=5 n=6 n=9 n=9 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 144 2015 Total Oxidised Nitrogen (NOx-N) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS3 (Yule Bk).
SWS3 (YULE BK) DOrgN
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
rgN
(m
g L
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
n=11 n=5 n=6 n=9 n=9 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 145 2015 Dissolved Organic Nitrogen (DOrgN) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS3 (Yule Bk).
Swan Canning Catchment Data Report January - June 2015
120 Department of Water
SWS3 (YULE BK) TP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TP
(m
g L
-1)
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
n=11 n=5 n=6 n=9 n=9 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 146 2015 Total Phosphorus (TP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS3 (Yule Bk).
SWS3 (YULE BK) SRP
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
SR
P (
mg L
-1)
0.00
0.05
0.10
0.15
0.20
0.25
0.30
n=11 n=5 n=6 n=9 n=9 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 147 2015 Soluble Reactive Phosphorus (SRP) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS3 (Yule Bk).
Swan Canning Catchment Data Report January - June 2015
SWS3 (YULE BK) DOC
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
C (
mg L
-1)
0
5
10
15
20
25
30
n=11 n=5 n=6 n=9 n=9 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 148 2015 Dissolved Organic Carbon (DOC) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at SWS3 (Yule Bk).
SWS3 (YULE BK) TSS
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TS
S (
mg L
-1)
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
n=11 n=5 n=6 n=9 n=9 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 149 2015 Total Suspended Solids (TSS) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS3 (Yule Bk).
Swan Canning Catchment Data Report January - June 2015
122 Department of Water
SWS3 (YULE BK) DO
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
DO
(m
g L
-1)
0
2
4
6
8
10
12
n=11 n=5 n=6 n=9 n=9 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 150 2015 Dissolved Oxygen (DO) (mg L-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS3 (Yule Bk).
SWS3 (YULE BK) Sp. Conductivity
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Sp.
Cond (
mS
cm
-1)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
n=11 n=5 n=6 n=9 n=9 n=10 n=13 n=12 n=10 n=10 n=10 n=12
2010-2014 data
2015 data
Figure 151 2015 Specific Conductivity (mS cm-1
) monthly medians over 2010-2014 monthly box plots of median, 25
th, 75
th, 10
th and 90
th percentiles, at site SWS3 (Yule Bk).
Swan Canning Catchment Data Report January - June 2015
Table 18 2015 monthly sample numbers, minimum and maximum values at SWS3 (Yule Bk).
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
TN (mg L-1)
n 1 2 1 2 2 3
min 0.94 1.7 1.5 0.84 0.65 0.8
max 0.94 4.6 1.5 2.00 1.20 1.3
med - - - 1.42 0.93 1.0
NH3-N (mg L-1)
n 1 2 1 2 2 3
min 0.01 0.44 0.69 0.120 0.058 0.015
max 0.01 3.50 0.69 0.170 0.260 0.150
med - - - 0.145 0.159 0.120
NOx-N (mg L-1)
n 1 2 1 2 2 3
min <0.01 <0.01 0.042 0.065 0.140 0.14
max <0.01 0.01 0.042 0.270 0.250 0.50
med - - - 0.168 0.195 0.31
DOrgN (mg L-1)
n 1 2 1 2 2 3
min 0.77 0.73 0.72 0.540 0.250 0.34
max 0.77 0.96 0.72 0.750 0.680 0.63
med - - - 0.645 0.465 0.49
TP (mg L-1)
n 1 2 1 2 2 3
min 0.19 0.32 0.14 0.180 0.091 0.083
max 0.19 0.92 0.14 0.350 0.140 0.130
med - - - 0.265 0.116 0.085
SRP (mg L-1)
n 1 2 1 2 2 3
min 0.073 0.14 0.057 0.065 0.046 0.037
max 0.073 0.38 0.057 0.110 0.076 0.045
med - - - 0.088 0.061 0.039
DOC (mg L-1)
n 1 2 1 2 2 3
min 15 17 18 10 5 7
max 15 17 18 11 10 9
med - - - 10.5 7.5 9
TSS (mg L-1)
n 1 2 1 2 2 3
min 4 4 2 5 1 3
max 4 11 2 144 10 8
med - - - 74.5 5.5 4
Swan Canning Catchment Data Report January - June 2015
124 Department of Water
DO (mg L-1)
n 1 2 1 2 2 3
min 4.50 1.51 4.21 2.44 4.19 4.84
max 4.50 3.20 4.21 2.82 5.70 6.61
med - - - 2.63 4.95 6.34
Sp. Conductivity (mS cm-1)
n 1 2 1 2 2 3
min 1.061 0.834 0.716 0.436 0.237 0.590
max 1.061 0.851 0.716 0.699 0.597 0.758
med - - - 0.568 0.417 0.634
Swan Canning Catchment Data Report January - June 2015
Department of Water 125
16 SWANCATCH/SCWQIP data comparison DISCLAIMER: A normal distribution of data is required to confidently predict standard deviation, and with a small sample size of
only six or seven data points the assumption of normality is not necessarily correct.
Table 19 2015 first and second quarter (Jan - June) mean ± standard deviation for all SWANCATCH (bold font) and SCWQIP (regular font) sites.
Catchment Site TN NH3-N NOx-N DOrgN TP SRP DOC TSS DO Specific
Conductivity
Avon (Millendon) SWN5 0.72 ± 0.16 0.01 ± 0.01 0.01 ± 0 0.61 ± 0.10 0.01 ± 0.01 0.01 ± 0 11.67 ± 2.08 3.33 ± 1.15 8.44 ± 1.26 11.82 ± 1.46
Bannister Creek SWS2 1.20 ± 0.25 0.11 ± 0.17 0.17 ± 0.13 0.80 ± 0.20 0.11 ± 0.03 0.06 ± 0.02 20.23 ± 6.41 6.77 ± 5.05 4.27 ± 2.01 0.87 ± 0.34
Bayswater Main Drain SWS10 1.45 ± 0.27 0.47 ± 0.13 0.44 ± 0.09 0.44 ± 0.11 0.05 ± 0.01 0.01 ± 0 11.08 ± 1.93 12.15 ± 6.56 6.64 ± 1.93 0.72 ± 0.14
Bennett Brook SWN12 0.89 ± 0.19 0.04 ± 0.01 0.21 ± 0.13 0.57 ± 0.10 0.06 ± 0.02 0.03 ± 0.01 15.15 ± 2.03 5.62 ± 1.85 5.56 ± 0.76 0.68 ± 0.03
Bickley Brook SWS4 1.62 ± 1.52 0.03 ± 0.03 1.13 ± 1.45 0.41 ± 0.06 0.06 ± 0.03 0.02 ± 0.01 8.83 ± 1.47 3.25 ± 3.52 4.88 ± 2.15 0.68 ± 0.37
Blackadder Creek SWN8 0.67 ± 0.19 0.04 ± 0.02 0.15 ± 0.14 0.48 ± 0.09 0.05 ± 0.02 0.03 ± 0.01 9.14 ± 1.21 2.29 ± 1.38 3.80 ± 1.20 1.14 ± 0.46
Bull Creek SCCIS2 0.80 ± 0.12 0.06 ± 0.04 0.06 ± 0.04 0.63 ± 0.07 0.08 ± 0.03 0.05 ± 0.01 19.00 ± 2.80 2.35 ± 2.49 5.32 ± 1.35 0.73 ± 0.08
BAMDKD 0.83 ± 0.17 0.10 ± 0.05 0.09 ± 0.08 0.59 ± 0.08 0.10 ± 0.04 0.07 ± 0.03 16.08 ± 2.78 2.54 ± 3.29 3.99 ± 1.43 0.62 ± 0.15
Claise Brook MD CB 13 1.20 ± 0.18 0.19 ± 0.12 0.54 ± 0.14 0.26 ± 0.05 0.06 ± 0.02 0.01 ± 0.01 5.27 ± 0.79 6.18 ± 2.82 7.33 ± 1.57 0.77 ± 0.07
Ellen Brook SWN3
* 2.30 0.18 0.02 1.50 0.30 0.10 30.00 25.00 7.24 3.67
SWN9 1.07 ± 0.47 0.03 ± 0.01 0.30 ± 0.36 0.69 ± 0.18 0.08 ± 0.03 0.05 ± 0.02 19.92 ± 2.60 3.92 ± 1.12 5.81 ± 1.46 0.79 ± 0.13
Ellis Brook EBGS01 - - - - - - - - - -
Helena River SWN10 1.50 ± 0.67 0.83 ± 0.45 0.08 ± 0.14 0.40 ± 0.07 0.02 ± 0.01 0.01 ± 0 9.75 ± 2.87 19.50 ± 23.74 2.40 ± 1.41 1.40 ± 0.32
Helm Street SCCIS4 1.58 ± 0.94 0.02 ± 0.01 0.40 ± 0.84 1.06 ± 0.42 0.05 ± 0.04 0.03 ± 0.02 15.33 ± 5.72 6.22 ± 9.77 3.15 ± 1.63 2.56 ± 1.44
Henley Brook HBBROCK 1.17 ± 0.58 0.03 ± 0.02 0.06 ± 0.06 0.61 ± 0.08 0.11 ± 0.10 0.03 ± 0.03 13.83 ± 2.48 14.83 ± 11.79 7.76 ± 0.62 0.59 ± 0.07
Jane Brook SWN7* 0.37 0.03 <0.01 0.29 0.02 0.01 7.00 2.00 2.36 0.79
Lower Canning SCCIS3 1.58 ± 0.56 0.20 ± 0.17 0.31 ± 0.49 0.83 ± 0.11 0.30 ± 0.20 0.21 ± 0.14 15.54 ± 3.04 10.23 ± 11.35 3.68 ± 1.98 1.00 ± 0.13
Maylands MIMDOUT 0.79 ± 0.19 0.09 ± 0.05 0.26 ± 0.03 0.42 ± 0.12 0.01 ± 0.01 0.01 ± 0 13.80 ± 1.30 1.10 ± 0.55 7.52 ± 0.56 1.57 ± 1.86
Mills Street Main Drain SWS1 1.18 ± 0.37 0.20 ± 0.19 0.18 ± 0.17 0.54 ± 0.10 0.15 ± 0.07 0.04 ± 0.02 13.46 ± 4.10 10.77 ± 6.56 5.34 ± 1.96 0.58 ± 0.23
Perth Airport North SCCIS12 0.67 ± 0.21 0.04 ± 0.01 0.15 ± 0.21 0.40 ± 0.04 0.06 ± 0.05 0.01 ± 0 9.77 ± 1.79 5.46 ± 2.11 7.52 ± 1.22 0.55 ± 0.16
Perth Airport South SCCIS11 0.84 ± 0.14 0.03 ± 0.01 0.08 ± 0.09 0.66 ± 0.11 0.05 ± 0.02 0.02 ± 0 20.83 ± 4.63 2.29 ± 2.01 4.09 ± 1.72 0.54 ± 0.15
Swan Canning Catchment Data Report January - June 2015
126 Department of Water
Saint Leonards Creek SCCIN3 - - - - - - - - - -
South Belmont SWS13 0.70 ± 0.17 0.08 ± 0.05 0.11 ± 0.05 0.47 ± 0.10 0.15 ± 0.08 0.10 ± 0.07 12.08 ± 2.06 2.00 ± 0.91 5.32 ± 0.90 0.64 ± 0.12
South Perth SCCIS1 0.79 ± 0.12 0.28 ± 0.08 0.09 ± 0.07 0.32 ± 0.06 0.02 ± 0.01 0 ± 0 7.83 ± 1.03 10.00 ± 4.73 3.14 ± 1.38 0.51 ± 0.07
WIFRD 1.46 ± 0.36 0.11 ± 0.05 0.28 ± 0.33 1.01 ± 0.06 0.12 ± 0.04 0.09 ± 0.03 27.88 ± 3.87 1.56 ± 1.12 4.35 ± 0.82 0.62 ± 0.01
Southern River SWS7 0.99 ± 0.29 0.05 ± 0.02 0.22 ± 0.21 0.66 ± 0.16 0.15 ± 0.05 0.10 ± 0.04 19.69 ± 5.94 4.58 ± 3.73 4.16 ± 2.00 0.80 ± 0.25
AW05 0.62 ± 0.39 0.03 ± 0.02 0.28 ± 0.35 0.25 ± 0.13 0.03 ± 0.04 0.02 ± 0.02 5.00 ± 4.00 2.25 ± 1.89 8.25 ± 1.68 0.28 ± 0.12
Susannah Brook SWN11 - - - - - - - - - -
Upper Canning River SWS12 0.36 ± 0.25 0.03 ± 0.02 0.12 ± 0.17 0.19 ± 0.07 0.01 ± 0.01 0.01 ± 0 3.69 ± 1.03 11.00 ± 4.20 5.31 ± 1.88 0.63 ± 0.09
Upper Swan CSMDREID 1.24 ± 0.41 0.05 ± 0.04 0.49 ± 0.30 0.57 ± 0.08 0.13 ± 0.06 0.06 ± 0.04 12.77 ± 1.30 8.00 ± 7.33 5.69 ± 1.44 0.83 ± 0.21
WNDCK - - - - - - - - - -
Yule Brook SWS3 1.50 ± 1.11 0.50 ± 1.01 0.16 ± 0.16 0.62 ± 0.20 0.24 ± 0.24 0.10 ± 0.10 11.64 ± 4.41 17.82 ± 41.97 4.21 ± 1.62 0.67 ± 0.22
* Please note: for sites SWN3 (Ellen Brook Catchment) and SWN7 (Jane Brook Catchment) there was only one week of data for the Jan-June 2015 period; so the raw data has been presented, since mean values and standard deviations are not applicable in this case.
Swan Canning Catchment Data Report January - June 2015
Department of Water 127
17 Perth rainfall This graph displays the rainfall (in millimetres) recorded in Perth from 1st January 2010 to 30th June 2015 on a monthly basis, as
shown on the Bureau of Meteorology website (rainfall data for the Perth Metro site is used).
Figure 152 Perth’s rainfall 2010 to 30th June 2015.
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