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Table Wq05: Selected water quality data for gage station #07057475

Selected water quality data for gage station #07057475 (Double Spring near Dora) for water years 1994-1997 (USGS 1994, USGS 1995, USGS 1996, MDNR 1996a, USGS 1997, USGS 1998a). Note: This table is not a final authority.
Parameter State Standard Measurment
I III V VI VII Min-Max
Temperture (°F) (cold water fishery) 68.0 Max 51.8-57.2
pH 6.5-9.0 6.7-7.6
Oxygen, dissolved (mg/L) (cold water fishery) 6.0 Min 6.7-11.5
Coliform, fecal (colonies / 100 ml) 200 k1-k1010
Streptococci, fecal (colonies / 100 ml) k1-k1100
Alkalinity1 (mg/L as CaCO3) 128-240
Hardness (mg/L as CaCO3) 140-210
Total Ammonia (mg/l as NH3) 0.1-32.12 <0.010-0.036
Phosophorus, Total3 (mg/L as P) <0.02-0.09
Manganese, dissolved (ug/L as Mn) 50 50 <1-2
Fluoride, dissolved (mg/L as F) 4 4 4 <0.1
Iron, dissolved (ug/L as Fe) 1000 300 300 <1.0-1

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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