greater wellington regional council · 2010. 11. 2. · xfish and game (nz) 2 xdepartment of...
TRANSCRIPT
#432641 1
Greater Wellington Regional Council
Greater Wellington Water
Hutt River Low Flow Management Plan (HRLFMP)
Status: Draft –September 2010.
1. Goal
To minimise the environmental impacts of water abstraction during periods of low flow in the Hutt River.
2. Objectives
The objectives of this plan are:
1. To minimise the impact of water abstraction during periods of low flow on the Hutt River ecosystem.
2. To describe specific actions to be taken when flows below identified trigger points occur.
3. To facilitate on-going liaison with stakeholders.
4. To determine the nature and scale of any impacts by monitoring aspects of the ecosystem during periods of low flow.
5. To provide a mechanism for reviewing the plan should objectives 1, 2 and 3 not be achieved to the satisfaction of all parties.
6. To explore practical mitigation options should monitoring results indicate degradation of the ecosystem.
3. Stakeholders
3.1 Principal stakeholders
The principal stakeholders associated with the issues described in this plan are:
The Environment Management Division of Greater Wellington Regional Council (GWRC)
Fish and Game (NZ)
2
Department of Conservation
The Hutt City Council
Upper Hutt City Council
The Water Supply, Parks and Forests Division of Greater Wellington Regional Council (referred to in this document as Greater Wellington Water or GWW)
The Port Nicholson Block Settlement Trust (Taranaki Whanui ki te Upoko o te Ika)
3.2 Secondary stakeholders
Other stakeholders impacted by the outcomes of this plan, but less directly involved include:
Wellington City Council
Porirua City Council
Recreational river users.
4. Roles and responsibilities
The roles and responsibilities of the principal stakeholders are set out in the table on the next page:
#432
641
3
Stak
ehol
der
Rol
eR
espo
nsib
ility
Gre
ater
Wel
lingt
on W
ater
App
lican
tTo
mon
itor
the
flow
at
the
Birc
hvill
e riv
er s
tage
rec
ordi
ng s
ite
(Site
No.
298
18)
To m
onito
r the
flow
at t
he K
aito
ke W
eir
To t
ake
actio
ns a
s se
t ou
t in
thi
s pl
an w
here
tho
se a
ctio
ns a
re
unde
r the
dire
ct c
ontro
l of G
WW
.To
req
uest
oth
ers
to t
ake
actio
ns a
s se
t ou
t in
thi
s pl
an w
here
th
ese
actio
ns a
re n
ot u
nder
the
dire
ct c
ontro
l of G
WW
.To
und
erta
ke o
r ar
rang
e ad
ditio
nal
mon
itorin
g as
set
out
in
the
mon
itorin
g pl
an a
nd lo
w fl
ow m
onito
ring
as se
t out
in th
is p
lan.
To p
repa
re a
n an
nual
rep
ort c
over
ing
the
issu
es a
s se
t out
in th
e pl
an a
nd d
istri
bute
cop
ies
to a
ll st
akeh
olde
rs (
by 3
0 Se
ptem
ber
each
yea
r cov
erin
g th
e pr
evio
us Ju
ly to
June
per
iod)
.To
coo
rdin
ate
a re
view
of t
he p
lan
if th
is is
con
side
red
nece
ssar
y by
any
one
of t
he p
rinci
pal s
take
hold
erso
r at G
WW
vol
ition
.To
coo
rdin
ate
a re
view
of t
he m
onito
ring
plan
if th
is is
con
side
red
nece
ssar
y by
any
one
of
the
prin
cipa
l st
akeh
olde
rs o
r at
GW
W
volit
ion.
The
revi
ew to
be
com
plet
ed a
nd a
ny m
odifi
catio
ns to
the
mon
itorin
g pl
an a
gree
d pr
ior t
o 1
Dec
embe
r.G
WR
C E
nviro
nmen
t M
anag
emen
t Div
isio
nR
egul
ator
To e
nsur
e th
at th
e co
nditi
ons c
onta
ined
in th
e re
sour
ce c
onse
nt, o
f w
hich
thi
s pl
an i
tsel
f is
a c
ondi
tion,
are
ful
ly c
ompl
ied
with
by
the
cons
ent h
olde
r.To
rev
iew
ann
ual
repo
rts p
repa
red
by G
WW
and
to
call
for
are
view
of t
his p
lan
if a
revi
ew is
con
side
red
nece
ssar
y.A
ppro
ve a
ny c
hang
es to
the
mon
itorin
g pl
anFi
sh a
nd G
ame
(NZ)
Rep
rese
ntin
g th
e in
tere
sts o
f ang
lers
To re
view
ann
ual r
epor
ts p
repa
red
by G
WW
.To
und
erta
ke m
onito
ring
of th
e ec
olog
y of
the
Hut
t Riv
er a
s th
ey
see
fit.
To c
all
for
a re
view
of
this
pla
n if
a re
view
is
cons
ider
ed
nece
ssar
y
4
To c
all f
or a
revi
ew o
f Mon
itorin
g Pl
an if
con
side
red
nece
ssar
y.D
epar
tmen
t of C
onse
rvat
ion
Prot
ectin
g th
e riv
er e
colo
gyTo
revi
ew a
nnua
l rep
orts
pre
pare
d by
GW
W.
Toun
derta
ke m
onito
ring
of th
e ec
olog
y of
the
Hut
t Riv
er a
s th
ey
see
fit.
To c
all
for
a re
view
of
this
pla
n if
a re
view
is
cons
ider
ed
nece
ssar
y.To
cal
l for
a re
view
of M
onito
ring
Plan
if c
onsi
dere
d ne
cess
ary.
Port
Nic
hols
on B
lock
Se
ttlem
ent T
rust
Safe
guar
ding
the
tradi
tiona
l and
hi
stor
ical
cul
tura
l and
spiri
tual
val
ues o
f th
e iw
i.
To re
view
ann
ual r
epor
ts p
repa
red
by G
WW
.To
requ
est a
dditi
onal
mon
itorin
g of
the
ecol
ogy
of th
e H
utt R
iver
if
they
see
the
need
.To
cal
l fo
r a
revi
ew o
f th
is p
lan
if a
revi
ew i
s co
nsid
ered
ne
cess
ary.
To c
all f
or a
revi
ew o
f Mon
itorin
g Pl
an if
con
side
red
nece
ssar
y.H
utt C
ity C
ounc
il.Pr
otec
ting
the
inte
rest
s of
Low
er H
utt
Val
ley
resi
dent
s.To
revi
ew a
nnua
l rep
orts
pre
pare
d by
GW
W.
To re
ques
t add
ition
al m
onito
ring
of th
e ec
olog
y of
the
Hut
t Riv
er
if th
ey se
e th
e ne
ed.
To c
all
for
a re
view
of
this
pla
n if
a re
view
is
cons
ider
ed
nece
ssar
y.U
pper
Hut
t City
Cou
ncil.
Prot
ectin
g th
e in
tere
sts
of U
pper
Hut
t V
alle
y re
side
nts.
To re
view
ann
ual r
epor
ts p
repa
red
by G
WW
.To
requ
est a
dditi
onal
mon
itorin
g of
the
ecol
ogy
of th
e H
utt R
iver
if
they
see
the
need
.To
cal
l fo
r a
revi
ew o
f th
is p
lan
if a
revi
ew i
s co
nsid
ered
ne
cess
ary.
#432641 5
5. Background monitoring
5.1 General
Background environmental monitoring that provides a baseline against which to compare any ecological changes that may arise is available from GWRC records of state of the environmentmonitoring and from NIWA national monitoring programmes.
Fish numbers have been monitored by Fish and Game since 1999.
5.2 River flow
Flow in the Hutt River is continuously monitored at Kaitoke and Birchville by NIWA, and at Te Marua and Taita by the GWRC Environment Division. This work is carried out in accordance with relevant national standards regarding accuracy etc.
5.3 River water quality
A programme of water quality monitoring is run by the Environment Division of GWRC. Historically four sites, Te Marua (site FB22), Birchville (site FB23), Manor Park Site FB 24) and upstream of Melling (site FB 25) were monitored, but current monitoring is limited to sites at Te Marua, Manor Park and Boulcott (site RS 22).
Parameters monitored include temperature, ammoniacal nitrogen, filamentous periphyton cover, WQI grade, MCI grade and SQMCI grade.
5.4 Water use
GWW monitors the use of water on a daily basis. Water supplied from each treatment plant and delivered to each of the 47 points of supply is monitored. This information is converted into gross daily use per head on a city by city basis using the latest Statistics NZ population figures, averaged over the June/June reporting year.
5.5 Proposed additional monitoring
A Monitoring Plan has been prepared which covers water quality, macroinvertebrates and periphytons.
5.6 Low flow monitoring
Additional monitoring is to be undertaken in response to low flows. The detail of this is set out in the Monitoring Plan.
6
6. Actions to be taken under low flow conditions
6.1 General
The intent of the actions set out Appendix 1 of this plan is to maintain the flow at Birchville above 2,700 L/sec for as long as is practicable, given the need to provide an adequate supply of water to the people in the region and the uncertainties of the climate. The matrix contained in Appendix 1 sets out trigger points, a range of system management actions and a range of monitoring requirements. It also refers to a series of communication, education, water use limitation and enforcement actions set out in the GWW Summer Water Demand Management Plan contained in Appendix 2.
6.2 Trigger points
Trigger points are established directly in terms of the river flow measured at Kaitoke weir and Birchville and the duration for which these flows are below the various threshold values. GWW will use telemetered real time information from the river gauging station at Birchville and the control system at Kaitoke to enable actions to be initiated at the nominated trigger points.
The initial trigger point is set at a flow less than 3,500 L/sec for more than five consecutive days at Birchville or the flow downstream of Kaitoke Weir less than 620 L/sec for more than five consecutive days.
The level 3 trigger of flow is less than 2,700 for more than twenty days or less than 2,000 L/sec for more than five consecutive days at Birchville or flow downstream of Kaitoke Weir less than 620 L/sec for more than thirty consecutive days. This is based approximately on a flow which maintains 75% of the MALF habitat (2,040 L/sec) at Birchville. Statistically this flow occurs for less than 4% of the time.
The level 5 trigger of flow less than 1,600 L/sec for more than twenty consecutive days, or less than 1,300 L/sec for more than five consecutive days at Birchville or flow downstream of Kaitoke Weir less than 620 L/sec for more than sixty consecutive days. This based on maintaining 50% of MALF habitat (1,260 L/sec) at Birchville and meeting the minimum flow of 1200 L/sec at Birchville as specified in the Regional Water Plan. Statistically this flow occurs for less than 1% of the time.
Note: these flows have been derived by Dr Henry Hudson, see Appendix 3.
More intensive demand management, system management and monitoring actions will be introduced as the flow drops as shown in Appendices 1 and 2. and as set out in the draft Monitoring Plan.
6.3 Demand management actions
Actions aimed at reducing the use of water are set out in Appendix 2.
Implementing actions such as formally notifying bylaws, policing watering restrictions and bringing prosecutions against offenders will require the cooperation of the Territorial Authorities listed in
7
section 2.2. Bylaws in place in each of the four cities are essentially the same. Copies of the current city garden watering bylaws are contained in Appendix 4. Note that Wellington City Council has a Customer Charter rather than a bylaw. The charter includes watering restrictions similar to those of the other cities, but Wellington City Council would use the Local Government Act provisions to enforce compliance if necessary. Appendix 5 is a letter from Capacity Infrastructure Services which confirms in the first paragraph on page 2 that the TAs represented by Capacity will take action under their bylaws in accordance with the trigger levels in the HRLFMP if necessary. (note that other suggestions contained in this letter have been taken note of and changes made to align the HRFPMP with the Water Restriction Trigger Matrix)
6.4 System management actions
Actions aimed at reducing reliance on the Kaitoke source of water are listed in Appendix 1. However the practicability of implementing these actions depends on aspects such as the availability of water from other sources, compliance with resource consents applicable to other sources and the need to conserve water stored in the Stuart Macaskill Lakes and the Waiwhetu Aquifer to cater for worsening drought conditions should they occur later in summer.
6.5 Monitoring
The Monitoring Plan (Appendix 7 to the consent condition variation application) sets out monitoring requirements in respect of low flows. Monitoring actions are linked to the trigger levels in Appendix 1.
7. Reporting
An annual report will be prepared by GWW.
The report will contain the following;Summary of water useage and sources
Summary of river hydrology
Water quality results (pH, temperature and dissolved oxygen)
Macroinvertebrate survey results
Periphyton monitoring results
Cynobacteria monitoring results
The report will cover the period 1st July to 30th
The report will be completed by 30 September each year and copies provided to all the principal stakeholders listed in section 3.1.
June.
8
8. Review
If any one of the principal stakeholders is unhappy with the outcomes described in the annual reportthen they have the right to call a meeting of all principal stakeholders to discuss these outcomes and to suggest changes to the HRLFMP which might mitigate the impacts of low flows in the future.GWW may also seek a review of the HRLFMP on its own volition.
9
Appendix 1
Schedule of flow trigger points. demand management actions, system management actions and monitoring. (Document #452194)
#452
194
APP
EN
DIX
1
HU
TT
RIV
ER
LO
W F
LO
W M
AN
AG
EM
EN
T P
LA
N
Act
ions
to b
e ta
ken
by G
reat
er W
ellin
gton
Wat
er to
red
uce
dem
and,
bas
ed o
n flo
w in
the
Hut
t Riv
er a
t Bir
chvi
lle
Tri
gger
poi
ntD
eman
d M
anag
emen
t Act
ion
Flow
mea
sure
d at
Bir
chvi
lle r
iver
re
cord
er st
aton
unl
ess s
tate
d ot
herw
ise
With
Ref
eren
ce to
Dro
ught
M
anag
emen
t Pla
n ag
reed
bet
wee
n G
WW
and
City
Cou
ncils
.
Plan
t or
sour
ceA
ctio
nC
ondi
tions
Act
ion
Freq
uenc
yR
esou
rce
Mon
itor w
ater
use
.D
aily
GW
WW
ater
qua
lity
mon
itorin
g (f
ield
mea
sure
men
t of w
ater
te
mpe
ratu
re, d
isso
lved
oxy
gen
and
pH) a
t Birc
hvill
e.A
s set
out
in th
e ag
reed
m
onito
ring
plan
Perip
hyto
n co
ver o
f riv
er b
ed (v
isual
ass
essm
ent o
f % c
over
) at
Birc
hvill
e.A
s set
out
in th
e ag
reed
m
onito
ring
plan
Wai
nui/O
rong
oron
goM
axim
ise
abstr
actio
nR
esou
ce c
onse
nt c
ondi
tions
met
.M
onito
r wat
er u
se.
Dai
lyG
WW
McE
wan
Par
k le
vel >
the
hist
oric
al m
onth
ly
aver
age
if da
te <
28
Febr
uary
Wat
er q
ualit
y m
onito
ring
(fie
ld m
easu
rem
ent o
f wat
er
tem
pera
ture
, dis
solv
ed o
xyge
n an
d pH
) at B
irchv
ille.
As s
et o
ut in
the
agre
ed
mon
itorin
g pl
anPe
riphy
ton
cove
r of r
iver
bed
(visu
al a
sses
smen
t of %
cov
er)
at B
irchv
ille.
As s
et o
ut in
the
agre
ed
mon
itorin
g pl
an
Iden
tifia
tion
of d
omin
ant a
lgae
taxa
As s
et o
ut in
the
agre
ed
mon
itorin
g pl
anM
acro
inve
rtebr
ate
surv
ey to
show
Tax
a ric
hnes
s, M
CI,
SQM
CI a
nd %
EPT,
at B
irchv
ille
As s
et o
ut in
the
agre
ed
mon
itorin
g pl
anW
ainu
i/Oro
ngor
ongo
Max
imis
e ab
strac
tion
Res
ouce
con
sent
con
ditio
ns m
et.
Mon
itor w
ater
use
.D
aily
GW
W
McE
wan
Par
k le
vel <
0.3
met
ers b
elow
the
hist
oric
al m
onth
ly a
vera
ge if
dat
e <
28 F
ebru
ary.
Wat
er q
ualit
y m
onito
ring
(fie
ld m
easu
rem
ent o
f wat
er
tem
pera
ture
, dis
solv
ed o
xyge
n an
d pH
) at B
irchv
ille.
As s
et o
ut in
the
agre
ed
mon
itorin
g pl
an
McE
wan
Par
k le
vel <
0.5
met
ers b
elow
the
hist
oric
al m
onth
ly a
vera
ge if
dat
e >
28 F
ebru
ary.
Perip
hyto
n co
ver o
f riv
er b
ed (v
isual
ass
essm
ent o
f % c
over
) at
Birc
hvill
e.A
s set
out
in th
e ag
reed
m
onito
ring
plan
Lake
s > 8
5% fu
ll if
date
< 2
8 Fe
brua
ryId
entif
iatio
n of
dom
inan
t alg
ae ta
xaA
s set
out
in th
e ag
reed
m
onito
ring
plan
Lake
s > 6
0% fu
ll if
date
> 2
8 Fe
brua
ry.
Mac
roin
verte
brat
e su
rvey
to sh
ow T
axa
richn
ess,
MC
I, SQ
MC
I and
%EP
T, a
t Birc
hvill
eA
s set
out
in th
e ag
reed
m
onito
ring
plan
Wai
nui/O
rong
oron
goM
axim
ise
abstr
actio
nR
esou
ce c
onse
nt c
ondi
tions
met
.M
onito
r wat
er u
se.
Dai
lyG
WW
McE
wan
Par
k le
vel <
0.5
met
ers b
elow
the
hist
oric
al m
onth
ly a
vera
ge if
dat
e <
28 F
ebru
ary.
Wat
er q
ualit
y m
onito
ring
(fie
ld m
easu
rem
ent o
f wat
er
tem
pera
ture
, dis
solv
ed o
xyge
n an
d pH
) at B
irchv
ille.
As s
et o
ut in
the
agre
ed
mon
itorin
g pl
an
McE
wan
Par
k le
vel <
1.0
met
ers b
elow
the
hist
oric
al m
onth
ly a
vera
ge if
dat
e >
28 F
ebru
ary.
Perip
hyto
n co
ver o
f riv
er b
ed (v
isual
ass
essm
ent o
f % c
over
) at
Birc
hvill
e.A
s set
out
in th
e ag
reed
m
onito
ring
plan
Lake
s > 8
0% fu
ll if
date
< 2
8 Fe
brua
ryId
entif
iatio
n of
dom
inan
t alg
ae ta
xaA
s set
out
in th
e ag
reed
m
onito
ring
plan
Lake
s >50
% fu
ll if
date
> 2
8 Fe
brua
ry.
Mac
roin
verte
brat
e su
rvey
to sh
ow T
axa
richn
ess,
MC
I, SQ
MC
I and
%EP
T, a
t Birc
hvill
eA
s set
out
in th
e ag
reed
m
onito
ring
plan
Wai
nui/O
rong
oron
goM
axim
ise
abstr
actio
nR
esou
ce c
onse
nt c
ondi
tions
met
.M
onito
r wat
er u
se.
Dai
lyG
WW
McE
wan
Par
k le
vel <
0.5
met
ers b
elow
the
hist
oric
al m
onth
ly a
vera
ge if
dat
e <
28 F
ebru
ary.
Wat
er q
ualit
y m
onito
ring
(fie
ld m
easu
rem
ent o
f wat
er
tem
pera
ture
, dis
solv
ed o
xyge
n an
d pH
) at B
irchv
ille.
As s
et o
ut in
the
agre
ed
mon
itorin
g pl
an
McE
wan
Par
k le
vel <
1.0
met
ers b
elow
the
hist
oric
al m
onth
ly a
vera
ge if
dat
e >
28 F
ebru
ary.
Perip
hyto
n co
ver o
f riv
er b
ed (v
isual
ass
essm
ent o
f % c
over
) at
Birc
hvill
e.A
s set
out
in th
e ag
reed
m
onito
ring
plan
Lake
s >80
% fu
ll if
date
< 2
8 Fe
brua
ryId
entif
iatio
n of
dom
inan
t alg
ae ta
xaA
s set
out
in th
e ag
reed
m
onito
ring
plan
Lake
s >40
% fu
ll if
date
> 2
8 Fe
brua
ry.
Mac
roin
verte
brat
e su
rvey
to sh
ow T
axa
richn
ess,
MC
I, SQ
MC
I and
%EP
T, a
t Birc
hvill
eA
s set
out
in th
e ag
reed
m
onito
ring
plan
Not
e 1:
Ref
eren
ce d
ocum
ent #
4521
94
Res
tric
tion
Lev
el
Lev
el 2
Flow
less
than
3,5
00 L
/sec
for m
ore
than
fiv
e da
ys.
Flo
w
dow
nstre
am o
f Kai
toke
wei
r les
s tha
n 62
0 L/
sec
for m
ore
than
five
day
s.
Lev
el 1
Mon
itori
ngSy
stem
Man
agem
ent A
ctio
n
Res
trict
ion
Leve
l 1R
esou
ce c
onse
nt c
ondi
tions
met
.M
axim
ise
abstr
actio
nW
ainu
i/Oro
ngor
ongo
Polic
ing
of w
ater
ing
rest
rictio
ns w
ill b
e pr
imar
ily th
e re
spon
sibi
lity
of th
e C
ity
Cou
ncils
und
er th
e pr
ovis
ions
of t
he a
gree
d de
man
d m
anag
emen
t pla
n.
Flow
less
than
3,5
00 L
/sec
for m
ore
than
tw
enty
day
s or l
ess t
han
2,70
0 fo
r mor
e th
an fi
ve d
ays.
Flo
w
dow
nstre
am o
f Kai
toke
wei
r les
s tha
n 62
0 L/
sec
for m
ore
than
twen
ty d
ays.
Res
trict
ion
Leve
l 2
Max
imise
ab
strac
tion
Flow
less
than
2,7
00 fo
r mor
e th
an
twen
ty d
ays o
r les
s tha
n 2,
000
L/se
c fo
r m
ore
than
five
day
s
Res
trict
ion
Leve
l 3
Te M
arua
Lak
esPr
ovid
e 30
% o
f w
ater
to T
e M
arua
pl
ant.
Max
imise
ab
strac
tion
Wat
erlo
o
McE
wan
Par
k le
vel <
0.3
met
ers b
elow
the
hist
oric
al m
onth
ly a
vera
ge if
dat
e >
28 F
ebru
ary.
Lev
el 3
Wat
erlo
oM
axim
ise
abstr
actio
n
Wat
erlo
o
Prov
ide
20%
of
wat
er to
Te
Mar
ua
plan
t.
Te M
arua
Lak
es
Lev
el 4
Flow
less
than
2,0
00 L
/sec
for m
ore
than
tw
enty
day
s, le
ss th
an 1
,600
L/s
ec fo
r m
ore
than
five
day
s.
Res
trict
ion
Leve
l 4
Wat
erlo
oM
axim
ise
abstr
actio
n
Te M
arua
Lak
esPr
ovid
e 40
% o
f w
ater
to T
e M
arua
pl
ant.
Lev
el 5
Flow
less
than
1,6
00 L
/sec
for m
ore
than
tw
enty
day
s, or
less
than
1,3
00 L
/sec
.R
estri
ctio
n Le
vel 5
#432641 11
Appendix 2
Greater Wellington Water Summer Water Demand Management Plan.
#432
641
12
AP
PE
ND
IX 2
Sum
mer
Wat
er D
eman
d M
anag
emen
t Pla
nW
ater
Res
trict
ion
Leve
ls a
nd C
omm
unic
atio
nsT
o b
e r
ead
in
co
nju
ncti
on
wit
h 'W
ate
r R
estr
icti
on
Level T
rig
ger
Ma
trix
'
Last
upd
ated
7/5
/200
9
Restr
icti
on
le
vel
Resp
on
se t
yp
eA
dvert
isin
g (
inclu
din
g c
ou
ncil
'n
ew
s' an
d w
eb
sit
e)
Ad
vert
isin
g F
req
uen
cy
Med
iaG
uid
e T
arg
et
Dem
an
d
Maxim
um
Base
Stan
dard
odd
s/ev
ens
wat
erin
g ru
les
City
cou
ncils
eac
h to
pub
licis
e w
ater
ing
rest
rictio
ns /
byla
w a
t st
art o
f eac
h sp
ring/
sum
mer
sea
son
via
'in-h
ouse
' cha
nnel
s.
GW
RC
to ru
n st
anda
rd S
umm
er W
ater
Con
serv
atio
n (S
WC
) ad
verti
sing
dur
ing
Janu
ary
and
Febr
uary
, with
sta
rt da
te
flexi
ble
depe
ndin
g o
Freq
uenc
y of
pai
d-fo
r adv
ertis
ing
of re
stric
tions
/ by
law
at
disc
retio
n of
city
cou
ncils
. GW
RC
SW
C s
ched
ule
(Jan
an
d Fe
b) b
ased
on
med
ium
wei
ght o
f exp
osur
e
City
cou
ncils
to p
ublic
ise
indi
vidu
al re
stric
tion
/ byl
aw
deta
ils in
spr
ing
and
at le
ast m
onth
ly u
ntil
end
of F
eb.
GW
RC
SW
C m
edia
bas
ed o
n ad
vice
from
adv
ertis
ing
agen
cy (c
urre
ntly
pre
ss a
nd c
omm
erci
al ra
dio)
Nov
-Dec
pea
k da
y <
180
and
< 19
5ML/
d Ja
n-M
ar
1St
anda
rd o
dds/
even
s w
ater
ing
rule
s +
join
t adv
ertis
ing
Join
t wat
erin
g re
stric
tions
adv
ertis
ing
by G
WR
C (t
o al
ert
publ
ic to
ons
et o
f tou
gher
sup
ply/
dem
and
situ
atio
n an
d re
min
d ab
out r
estri
ctio
n le
vel a
ctiv
e). G
WR
C S
WC
ad
verti
sing
con
tinue
s (if
act
ive)
.
Fortn
ight
ly jo
int w
ater
ing
rest
rictio
n ad
verti
sing
unt
il po
sitio
n im
prov
es O
R n
ext r
estri
ctio
n le
vel a
ctiv
ated
. G
WR
C S
WC
sch
edul
e ba
sed
on m
ediu
m w
eigh
t of
expo
sure
Med
ia s
tate
men
t by
GW
RC
. Fur
ther
rele
ases
as
appr
opria
te if
ove
rall
posi
tion
wor
sens
. Cal
l for
car
eful
w
ater
use
, with
link
to a
dvic
e
Nov
-Dec
pea
k da
y <
175M
L an
d 3
day
avg.
<
170M
L; J
an-M
ar p
eak
day
< 19
0ML
and
3-da
y av
g. <
180
ML
'1' +
Pat
rols
(sug
gest
ligh
t - fr
iend
ly a
ppro
ach)
. Rem
inde
r of
byla
w h
ours
and
sav
ing
tips
Join
t adv
ertis
ing
of w
ater
ing
rest
rictio
ns b
y G
WR
C (t
o al
ert
publ
ic to
ons
et o
f tou
gher
sup
ply/
dem
and
situ
atio
n an
d re
min
d ab
out r
estri
ctio
n le
vel a
ctiv
e). G
WR
C S
WC
ad
verti
sing
con
tinue
s (if
act
ive)
.
Wee
kly
join
t wat
er re
stric
tions
adv
ertis
ing
until
pos
ition
im
prov
es O
R n
ext r
estri
ctio
n le
vel a
ctiv
ated
. GW
RC
SW
C s
ched
ule
base
d on
med
ium
wei
ght o
f exp
osur
e
Med
ia s
tate
men
t by
GW
RC
(to
aler
t pub
lic to
su
pply
/dem
and
situ
atio
n an
d ca
ll fo
r pat
rols
). U
pdat
es a
t ap
prox
. wee
kly
inte
rval
s un
til s
ituat
ion
impr
oves
Nov
-Dec
pea
k da
y <
170M
L an
d 3
day
avg.
<
165M
L; J
an-M
ar p
eak
day
< 18
5ML
and
3-da
y av
g. <
175
ML
Adve
rtisi
ng o
f ind
ivid
ual c
ounc
il pa
trolli
ng a
t dis
cret
ion
of c
ity
coun
cils
Freq
uenc
y of
adv
ertis
ing
abou
t Pat
rols
at d
iscr
etio
n of
ea
ch c
ity c
ounc
il.C
ity c
ounc
ils e
ach
to p
ublic
ise
wat
erin
g re
stric
tion
/ byl
aw
rule
s an
d on
set o
f pat
rols
via
'fre
e' c
ounc
il pu
blic
ity (e
.g.
med
ia s
tate
men
ts, c
ounc
il ne
ws
etc)
at r
egul
ar in
terv
als
Ban
on s
prin
kler
s an
d un
atte
nded
irrig
atio
n sy
stem
s (w
ater
ing
only
per
mitt
ed b
y ha
nd) +
Pat
rols
(inc
reas
ed
cove
rage
and
/or f
requ
ency
from
'Res
trict
ion
leve
l 2')
+ Le
aks/
Was
te h
otlin
e (if
not
alre
ady
avai
labl
e)
Join
t adv
ertis
ing
of b
an b
y G
WR
C (t
o al
ert p
ublic
to
supp
ly/d
eman
d si
tuat
ion
and
ban)
GW
RC
SW
C s
ched
ule
trans
ferre
d to
'ban
' mes
sage
. City
cou
ncils
to a
dver
tise
thei
r Le
aks/
Was
te h
otlin
es a
t lea
st v
ia 'i
n-ho
use'
cha
nnel
s
Adve
rtisi
ng o
f the
ban
sta
rting
wee
kly
in p
rint a
nd
med
ium
radi
o sc
hedu
le u
ntil
posi
tion
impr
oves
OR
nex
t re
stric
tion
leve
l act
ivat
ed. S
WC
adv
ertis
ing
can
be
resc
hedu
led
at s
hort
notic
e an
d so
me
activ
ity m
ay b
e if
shor
t ter
m s
uppl
y po
sitio
n im
prov
es b
ut l
Med
ia s
tate
men
t by
GW
RC
(to
aler
t pub
lic to
su
pply
/dem
and
situ
atio
n an
d ba
n). U
pdat
es a
t app
rox.
w
eekl
y in
terv
als.
City
cou
ncils
to in
vite
repo
rting
of l
eaks
an
d w
aste
and
rem
ind
of b
an a
nd p
atro
ls, v
ia 'f
ree'
co
unci
l pub
licity
(e.g
. med
ia s
tate
men
ts, c
ou
Targ
et p
eak
day
< 16
0ML
and
3-da
y ro
lling
m
ean
< 15
5ML
City
cou
ncils
to w
rite
to n
on-d
omes
tic h
igh
wat
er u
sers
, to
outli
ne s
ituat
ion,
requ
est t
hey
revi
ew n
on-e
ssen
tial w
ater
use
th
at c
ould
be
mod
ified
and
rem
ind
empl
oyee
s to
use
wat
er
with
car
e
4Ba
n on
all
dom
estic
hos
e us
e (a
llow
s ha
nd-w
ater
ing
with
ca
ns/b
ucke
ts) +
Pat
rols
(inc
reas
ed c
over
age
and/
or fr
equn
cy
from
'Res
trict
ion
leve
l 3')
+ Le
aks/
Was
te h
otlin
e
Join
t adv
ertis
ing
of b
an fr
eque
ncy
incr
ease
d (fr
om 'R
estri
ctio
n Le
vel 3
'). C
ity c
ounc
ils to
adv
ertis
e th
eir L
eaks
/Was
te
hotli
nes
mor
e ac
tivel
y th
an fo
r 'R
estri
ctio
n le
vel 3
'
Adve
rtisi
ng o
f the
ban
wee
kly
in p
rint (
Dom
-Pos
t and
4
com
mun
ities
) and
med
ium
radi
o sc
hedu
le u
ntil
posi
tion
impr
oves
OR
nex
t res
trict
ion
leve
l act
ivat
ed. A
dver
tisin
g ca
n be
resc
hedu
led
at s
hort
notic
e an
d so
me
activ
ity
may
be
if sh
ort t
erm
sup
ply
posi
tio
Med
ia s
tate
men
t by
GW
RC
(to
aler
t pub
lic to
su
pply
/dem
and
situ
atio
n an
d ba
n). U
pdat
es a
t app
rox.
tw
ice-
wee
kly
inte
rval
s un
til p
ositi
on im
prov
es. C
ity
coun
cils
requ
est r
epor
ting
of le
aks
and
was
te a
nd re
min
d of
ban
and
pat
rols
via
'fre
e' c
ounc
il pu
blic
ity
Targ
et p
eak
day
< 14
5ML
(win
ter a
vera
ge
dem
and)
Leve
l 2 ta
rget
ing
non-
dom
estic
wat
er u
sers
(to
be a
gree
d)C
ity c
ounc
il co
mm
unic
atio
n w
ith c
omm
erci
al u
sers
as
agre
ed
Ban
on a
ll do
mes
tic o
utdo
or w
ater
use
(oth
er th
an fo
r es
sent
ial h
ealth
-rela
ted
task
s) +
Pat
rols
(cov
erag
e an
d fre
quen
cy a
t lea
st a
s fo
r 'R
estri
ctio
n le
vel 4
')
Join
t adv
ertis
ing
of b
an in
crea
sed
(from
'Res
trict
ion
leve
l 4').
C
ity c
ounc
ils to
pub
licis
e th
eir L
eaks
/Was
te h
otlin
es m
ore
activ
ely
than
for '
Res
trict
ion
leve
l 4'
Adve
rtisi
ng o
f the
ban
wee
kly
in p
rint (
Dom
-Pos
t and
4
com
mun
ities
) and
at l
east
med
ium
radi
o sc
hedu
le u
ntil
posi
tion
impr
oves
. Adv
ertis
ing
can
be re
sche
dule
d at
sh
ort n
otic
e an
d so
me
activ
ity m
ay b
e if
shor
t ter
m
supp
ly p
ositi
on im
prov
es b
ut lo
nger
-term
Med
ia s
tate
men
t by
GW
RC
(to
aler
t pub
lic to
su
pply
/dem
and
situ
atio
n an
d ba
n). U
pdat
es a
s re
quire
d (tw
o-pl
us w
eekl
y) u
ntil
posi
tion
impr
oves
. City
cou
ncils
re
ques
t rep
ortin
g of
leak
s an
d w
aste
and
rem
ind
of b
an
and
patro
ls v
ia 'f
ree'
cou
ncil
publ
icity
(e.g
Targ
et p
eak
day
< w
inte
r av
erag
e de
man
d le
ss 1
0-15
% (1
22-1
29M
L)
Leve
l 3 ta
rget
ing
non-
dom
estic
wat
er u
sers
(to
be a
gree
d).
Citi
es to
inve
stig
ate
whe
ther
they
cou
ld a
nd w
ould
impo
se a
ho
sing
ban
on
non-
dom
estic
use
rs a
t 'R
estri
ctio
n le
vel 5
'
City
cou
ncil
com
mun
icat
ion
with
com
mer
cial
use
rs a
s ag
reed
532
#432641 13
Appendix 3
IFIM analysis of flow required to provide 75% and 50 % of MALF habitat
(from Environmental Management Associates)
#432
641
14
Tab
le sh
owin
gflo
w r
equi
red
to m
eet 7
5% a
nd 5
0% h
abita
t ret
entio
n fo
r va
riou
s spe
cies
Rea
chU
nits
Food
D.
May
flyB
T A
dult
BT
Year
ling
BT
Juve
nile
BT
Fry
<15c
m
BT
Fry
BT
Spaw
n
Birc
hvill
e
Hab
itat a
t 3.0
1 m
3/s
WU
A m
26.
98/m
9.32
4.34
5.80
6.92
3.25
7.58
1.55
90%
of h
abita
t at 3
.01
m3
WU
A m
/s2
6.28
/m8.
393.
905.
226.
232.
926.
821.
39Fl
ow 9
0% h
abita
t ret
entio
nm
32.
59/s
2.23
2.53
1.26
2.17
1.27
0.32
1.57
Flow
75%
hab
itat r
eten
tion
m3
2.04
/s1.
331.
920.
541.
30.
720.
061.
08Fl
ow 5
0% h
abita
t ret
entio
nm
31.
26/s
0.41
1.07
0.11
0.41
0.31
0.01
0.63
#432641 15
Appendix 4
Watering By-laws for:
Wellington City
Hutt City Council
Porirua City Council
Upper Hutt City
16
Wellington City Council
The following watering restrictions are in effect throughout the year, in the area served by Wellington City Council: Watering restrictions
Year-round restrictions on the use of sprinklers and garden hoses apply, to manage the demand for water
Unattended watering
Watering is permitted between 6am and 8am or 7pm and 9pm on alternate days. Properties with odd-numbered street addresses can be watered on odd days of the month - those with even-numbered street addresses on even days of the month
Watering by hand
A hand held hose may be used at any time, provided that water is not being used wastefully.
A watering can may be used to water at any time
Variations
Variations to Wellington City Council's watering restrictions may be introduced in times of drought, high demand and extreme circumstances. Variations will be notified through local media
Further informationFor further information about Wellington City Council's water charter, please contact Capacity, ph 910 3800.
17
Hutt City CouncilGarden watering restrictionsThe following watering restrictions are in effect in the area served by Hutt City Council during the period of daylight saving.
One sprinkler or unattended hose may be used per property. A buried irrigation system or soaker-hose is considered to be an unattended hose.
Unattended watering
Watering is permitted on alternate odd/even days. Properties with odd-numbered street addresses can be watered on odd days of the month - those with even-numbered street addresses on even days of the month.
Watering is permitted between 6.00am and 8.00am and 7.00pm and 9.00pm.
Watering by hand
A hand held hose may be used at any time, provided that no other hose or sprinkler is being used and that water is not being used wastefully.
A watering can may be used to water at any time.
ExceptionsThese restrictions do not apply to properties with metered service pipes or those properties that are not connected to Hutt City Council's water supply system and supply their own water for garden watering purposes.
The restrictions do not apply outside the daylight saving period.
For further information about Hutt City Council's watering bylaws, please contact Remi Cruze, Wellington Water Management Ltd., Tel. 910 3816.
Further information
18
Porirua City CouncilWatering bylawsThe following watering restrictions are in effect in the area served by Porirua City Council during the period of daylight saving:Unattended watering
One sprinkler or unattended hose may be used per property. A buried irrigation system or soaker-hose is considered to be an unattended hose.
Watering is permitted on alternate days. Properties with odd-numbered street addresses can be watered on odd days of the month - those with even-numbered street addresses on even days of the month.
Garden hosing restrictions do not apply to properties that have an authorised metered water supply, but water still must not be used wastefully.
Watering is permitted between 6.00am and 8.00am or 7.00pm and 9.00pm
Watering by hand
A handheld hose may be used at any time, provided that no other hose or sprinkler is being used and that water is not being used wastefully.
A watering can may be used to water at any time.
More informationFor further information about Porirua City Council's watering bylaws telephone 237 5089.
19
Upper Hutt City CouncilGarden watering restrictionsGarden watering restrictions apply all year round in the area served by Upper Hutt City Council's reticulated supply. The following restrictions apply:
A single garden watering system, or sprinkler, or soaker hose, or an unattended hose, may be in use at each premise in the morning between 6am and 8am, and in the evening between 7pm and 9pm.
Premises with even numbers can water on Wednesdays, Fridays and Sundays. Premises with odd numbers can water on Tuesdays, Thursdays and Saturdays. Watering with unattended devices is not allowed on Mondays.
Each garden watering system, sprinkler, soaker hose, or unattended hose must be in the care of a responsible person. Only one of the above garden watering systems can be used at a time in your garden.
It is an offence under the City's bylaws to use the water supply improperly or to an unreasonable extent or in a wasteful manner.
Upper Hutt City Council may introduce additional garden watering restrictions at any time, depending on available water supplies, and residents will be advised accordingly.
Using garden watering systems, sprinklers and hoses has the potential to waste a lot of water if used too frequently or turned on and forgotten about. It is for this reason that the above restrictions apply. They are designed to give people sensible guidance about the use of water - this will benefit all of us.More informationFor further information about Upper Hutt City Council's garden watering restrictions, telephone 527 2169.
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Appendix 5
Letter from Capacity