Attachment C

Load Duration Curves for the Flatrock-Haw Creek Watershed

1.00E+09

1.00E+10

1.00E+11

1.00E+12

1.00E+13

1.00E+14

1.00E+15

0 10 20 30 40 50 60 70 80 90 100

Flow Duration Interval (% )

E. co

li

Load

(C

FU/d

ay)

TotalMaximumDaily Load forE. coli

All E. coli Data(SingleSample)

Apr-OctRecreationSeason Data

Flatrock River at US 40 Bridge near Lewisville, IN

E. coli Load Duration Curve Site: #05 (WEF010-0001)

Upstream Drainage Area of 47.8 square mileIDEM Water Quality Data & USGS Gage 03363500 Stream Flow Data

DryConditions

LowFlows

HighFlow

s

Mid-rangeFlows

MoistConditions

1.00E+09

1.00E+10

1.00E+11

1.00E+12

1.00E+13

1.00E+14

1.00E+15

0 10 20 30 40 50 60 70 80 90 100

Flow Duration Interval (% )

E. co

li

Load (

CFU

/day)

TotalMaximumDaily Loadfor E. coli

All E. coliData (SingleSample)

Apr-OctRecreationSeason Data

Flatrock River at US 52 (SR 3) Bridge in Rushville, INE. coli Load Duration Curve - Site: #8 (WEF020-0012)

Upstream Drainage Area of 168 square mileIDEM Water Quality Data & USGS Gage 03363500 Stream Flow Data

DryConditions

LowFlows

HighFlow

s

Mid-rangeFlows

MoistConditions

1.00E+09

1.00E+10

1.00E+11

1.00E+12

1.00E+13

1.00E+14

1.00E+15

0 10 20 30 40 50 60 70 80 90 100

Flow Duration Interval (% )

E. co

li

Load (

CFU

/day)

Total MaximumDaily Load forE. coli

All E. coli Data(SingleSample)

Apr-OctRecreationSeason Data

Flatrock River at USGS St. Paul Gage SiteE. coli Load Duration Curve - Site: #10 (WEF040-0002)

Upstream Drainage Area of 303 square mileIDEM Water Quality Data & USGS Gage 03363500 Stream Flow Data

DryConditions

LowFlows

HighFlow

s

Mid-rangeFlows

MoistConditions

1.00E+10

1.00E+11

1.00E+12

1.00E+13

1.00E+14

1.00E+15

0 10 20 30 40 50 60 70 80 90 100

Flow Duration Interval (% )

E. co

li

Load (

CFU

/day) Total

MaximumDaily Load forE. coli

All E. coli Data(SingleSample)

Apr-OctRecreationSeason Data

Flatrock River at SR 31 Bridge in Columbus, IN

E. coli Load Duration Curve - Site: #14 (WEF050-0001)

Upstream Drainage Area of 534 square mileIDEM Water Quality Data & USGS Gage 03363900 Stream Flow Data

DryConditions

LowFlows

HighFlow

s

Mid-rangeFlows

MoistConditions

1.00E+09

1.00E+10

1.00E+11

1.00E+12

1.00E+13

1.00E+14

0 10 20 30 40 50 60 70 80 90 100

Flow Duration Interval (% )

E. co

li

Load

(C

FU/d

ay) Total Maximum

Daily Load forE. coli

All E. coli Data(Single Sample)

Apr-OctRecreationSeason Data

Haw Creek at SR 7 in Columbus, INE. coli Load Duration Curve - Site: #16 (WEF060-0002)

Upstream Drainage Area of 55.5 square mileIDEM Water Quality Data & USGS Gage 03363900 Stream Flow Data

DryConditions

LowFlows

HighFlow

s

Mid-rangeFlows

MoistConditions