Table Wq04: Selected water quality data for gage station #07057750

Selected water quality data for gage station #07057750 (North Fork River near Tecumseh) 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 Measurement
I IV V VI Min-Max
Temperature (°F) (cold water fishery) 68.0 Max 42.8-72.5
pH 6.5-9.0 7.4-8.4
Oxygen, dissolved (mg/L) (cold water fishery) 6.0 Min 5.7-14.4
Coliform, fecal (colonies / 100 ml) 200 3.0-3200
Streptococci, fecal (colonies / 100 ml) N/A
Alkalinity1 (mg/L as CaCO3) N/A
Hardness (mg/L as CaCO3) N/A
Total Ammonia (mg/l as NH3) 0.1-32.12 <0.01-0.07
Phosophorus, Total3 (mg/L as P) <1.0-13.0
Manganese, dissolved (ug/L as Mn)
Fluoride, dissolved (mg/L as F) 4 <0.1
Iron, dissolved (ug/L as Fe) 1000 <3.0-60.

I Protection of aquatic life

IV Irrigation

V Livestock and Wildlife Watering

VI Whole-body-contact recreation

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

N/A Not Available

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

2 Based on maximum chronic and acute standards for cold-water fishery. Levels are pH and temperature dependent. The maximum acute value at 4° C and pH of 6.6 is 32.1 mg/l. The maximum acute value at 30° C and pH of 9.0 is 0.6 mg/l. The maximum chronic value at 4° C and pH of 6.6 is 2.4 mg/l. The maximum chronic value at 30° 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.

3 State 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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