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Broken Bow

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					Beneficial Use Monitoring Program

Broken Bow
Sample Period October 2005 - July 2006
Location McCurtain County 1970 14,200 acres 918,070 acre-feet Flood Control, Hydropower, Water Supply, Recreation, Fish & Wildlife Result 4 NTU 14 units 293 cm excellent 35 oligotrophic 0.0 – 0.05 ppt 25.3 – 66.4 µS/cm 5.73 – 7.56 pH units 193 - 532 mV Up to 66% of water column < 2 mg/L in the fall and up to 62% in July 0.07 mg/L to 0.39 mg/L 0.008 mg/L to 0.015 mg/L 19:1 Dissolved Oxygen Turbidity Phosphorus limited True Color Sulfates, Chlorides & TDS En,ecal coli, & E. coli S 69% of recorded values < 6.5 pH units Notes/Comments 100% of values < OWQS of 25 NTU 100% of values < OWQS of 70

Times Visited 4

Sampling Sites 8

Lake Data

Impoundment Area Capacity Purposes

Parameter Average Turbidity Average True Color Average Secchi Disk Depth Water Clarity Rating Trophic State Index

Parameters

Trophic Class Salinity Specific Conductivity Profile Nutrients pH Oxidation-Reduction Potential Dissolved Oxygen Surface Total Nitrogen Surface Total Phosphorus Nitrogen to Phosphorus Ratio

Beneficial Uses

Fish & Wildlife Propagation Aesthetics Agriculture Primary Body Contact Recreation Public & Private Water Supply
NS = Not Supporting NEI = Not Enough Information

S

NS*

NS

S S S S

NTU = nephelometric turbidity units µS/cm = microsiemens per centimeter E. coli = Escherichia coli

OWQS = Oklahoma Water Quality Standards mV = millivolts Chlor-a = Chlorophyll-a

Notes

S = Fully Supporting

*Slightly acidic conditions are not unusual in this part of the state due to relatively low soil pH and lack of soluble bedrock. Because of these conditions it is likely that the low pH values may be due to natural causes; therefore the Water Board is looking at the applicability of developing site-specific criteria for waters in the southeastern portion of the state. mg/L = milligrams per liter µS/cm = microsiemens/cm ppt = parts per thousand En = Enterococci

Chlor-a

Metals

TSI

pH


				
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Description: Broken Bow