nutrient and sediment loading in sougahatchee creek and the impacts on aquatic biota report...
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Nutrient and Sediment Loading Nutrient and Sediment Loading in Sougahatchee Creekin Sougahatchee Creek
and the Impacts on and the Impacts on Aquatic BiotaAquatic Biota
Report submitted to West Point Stevens and theReport submitted to West Point Stevens and theCities of Auburn and Opelika, AlabamaCities of Auburn and Opelika, Alabama
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Acknowledgments:Acknowledgments:
Funding for this project was provided by:Funding for this project was provided by:
• the City of Auburn, Alabamathe City of Auburn, Alabama
• the City of Opelika, Alabamathe City of Opelika, Alabama
• West Point StevensWest Point Stevens
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WHY STUDY SOUGAHATCHEE CREEK?WHY STUDY SOUGAHATCHEE CREEK?
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SougahatcheeSougahatcheeCreekCreek
YatesYatesLakeLake
Photo taken on April 13, 1999
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Project Objectives:Project Objectives:
1. Measure concentrations and estimate annual loading of plant nutrients, total suspended solids (sediments) and metals
2. Examine physical habitat conditions of the streams and conduct bioassessments utilizing benthic macroinvertebrate communities
3. Using GIS technology, examine and quantify land cover for the entire Sougahatchee Basin from 1993 and 2001 satellite
imagery and aerial photography
4. Using regression analysis, examine relationships between basin land cover, nutrient and sediment loading and biological condition of the streams
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WHAT ARE PLANT NUTRIENTS ?WHAT ARE PLANT NUTRIENTS ?
• Nitrogen (NONitrogen (NO22, NO, NO33, NH, NH33, TN), TN)
• Phosphorus (SRP or POPhosphorus (SRP or PO44, TP), TP)
• Potassium (K)Potassium (K)
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NONO33
POPO44
NHNH 33
KK
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*EPA recommends 0.05 mg/L as the maximum concentration of total phosphorus for flowing streams entering a lake.
**0.1 mg/L = 1 ounce in 80,000 gallons of water
**
*
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Dam Forebay
SougahatcheeEmbayment
EFFECT OF NUTRIENTSEFFECT OF NUTRIENTS
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Figure 1 – Sougahatchee Creek at Pratt property looking upstream from mid-channel. On Wednesday, July 19, 2000, personnel from the Montgomery Branch of the Field Operations Division investigated a pollution complaint reported on the Sougahatchee Creek approximately ½ mile upstream of the Alabama State highway 49 bridge crossing in Tallapoosa County.
EUGLENOID ALGAL BLOOM IN CREEK EUGLENOID ALGAL BLOOM IN CREEK
Sougahatchee Creek Sougahatchee Creek
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Sampling Locations within the Sougahatchee Creek BasinSampling Locations within the Sougahatchee Creek Basin
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42.8”
42.6”
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Sougahatchee at Highway 188 Gage - 2001
0
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1 2 3 4 5 6 7 8 9 10 11 12
Month
Me
an
Da
ily D
isch
arg
e (
cfs
)
2001
Month
2002
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Measuring Stream DischargeMeasuring Stream Discharge*