#8- comp plan - water quality

Water Quality

Review Of Current Chapter

Based on 7 studies and data sets

High suspended solids

Exceeded Standards once Dissolved Oxygen (DO) on Sand Creek

Turbidity

Max 2009

Avg Storm

Impaired Standard

TREND ANALYSIS Turbidity

0

20

40

60

80

100

120

140

1 2 3 4 5

Standard

Baseflow

Baseflow Avg

Storm

Storm Avg

TREND ANALYSIS Dissolved Oxygen

0.0

2.0

4.0

6.0

8.0

10.0

12.0

1 2 3 4 5

Baseflow

Storm

Baseflow Avg

Storm Avg

TREND ANALYSIS Total Phosphorus

0.000

0.050

0.100

0.150

0.200

0.250

0.300

0.350

0.400

0.450

1 2 3 4 5

Standard

Baseflow Phosphorus(TP)

Storm Phosphorus (TP)

Baseflow Avg

Storm Avg

TREND ANALYSIS TSS

0

20

40

60

80

100

120

140

160

180

1 2 3 4 5

Standard

Baseflow

Avg Baseflow TSS

Storm

Avg Storm TSS

TREND ANALYSIS Volume

819.0

819.5

820.0

820.5

821.0

821.5

822.0

822.5

823.0

1 2 3 4 5

Baseflow

Avg baseflow

Storm

Avg Storm

Implications

Exceeding standards for Turbidity Total Suspended Solids (TSS) Phosphorus (P)

Lower (older) portion of the watershed lacks infrastructure needed for water quality

Expectations“Impaired” listing for

TurbidityPhosphorus

Active retrofitting lower creek

Creative infrastructure/close coordination with City

Questions?

Thank You

Coon Creek Watershed District