Table Wq02: Jacks Fork watershed - water quality above Two Rivers

Jacks Fork watershed - water quality above Two Rivers

Table Wq02. Selected water quality data for gage station 07066110 (Jacks Fork above Two Rivers) for water years 1994-1998 (USGS 1995, USGS 1996, MDNR 1996a, USGS 1997a, USGS 1998a, USGS 1999a). This table is not a final authority.
Parameter State Standard Measurement
I III V VI VII Min-Max
Temperature (°F) (cool water fishery) 84.0 Max 41.0-74.5
pH -------------------6.5-9.0---------------- 6.9-8.5
Oxygen, dissolved (mg/L) (cool water fishery) 5.0 Min 7.7-13.2
Coliform, fecal (colonies / 100 ml) 200 k1-1500
Streptococci, fecal (colonies / 100 ml) k2-800
Alkalinity1 (mg/L as CaCO3) 91-231
Hardness (mg/L as CaCO3) 140-180
Total Ammonia (mg/L as N) 0.1-32.12 <0.010-0.048
Phosophorus, Total3 (mg/L as P)   <0.02-0.120
Manganese, dissolved (ug/L as Mn) 50   50 1-7
Fluoride, dissolved (mg/L as F) 4 4 4 <0.10
Iron, dissolved (ug/L as Fe) 1000 300 300 <3-20

I Protection of aquatic life

III Drinking water supply

V Livestock and Wildlife Watering

VI Whole-body-contact recreation

VII Groundwater

k Non-ideal count of colonies (too large a sample, colonies merged)

1State standard for alkalinity currently unavailable. The Environmental Protection Agency currently recommends a minimum of 20.0 mg/L (USEPA 1999).

2Based on maximum chronic and acute standards for cold-water fishery. Levels are pH and temperature dependent. The maximum acute value at 4o C and pH of 6.6 is 32.1 mg/l. The maximum acute value at 30o C and pH of 9.0 is 0.6 mg/l. The maximum chronic value at 4o C and pH of 6.6 is 2.4 mg/l. The maximum chronic value at 30o C and pH of 9.0 is 0.1 mg/l. For specific criteria at varying pH and temperatures consult Table B of the Rules of the Department of Natural Resources Division 20-Clean Water Commission Chapter 7- Water Quality.

3State standard for phosphorus is currently unavailable. The Environmental Protection Agency currently recommends a maximum of 0.1mg/L for rivers (Christensen and Pope 1997).

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