Preimpoundment water quality of the Wild Rice River, Norman County, Minnesota
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- Document: Report (2051 pdf)
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Abstract
Water samples have been collected at two sites on the Wild Rice River since September 1974 to establish baseline water-quality characteristics before construction of a reservoir for recreation and flood control near Twin Valley, Minn. A decline in water quality between the sites is shown by mean total phosphorus concentrations, which increase from 0.06 to 0.10 milligram per liter downstream, and mean turbidity, which increases from 12 to 24 units downstream. Phosphorus and ammonia concentrations, as high as 0.31 and 2.7 milligrams per liter, respectively, could be the result of domestic waste input to the river upstream from Hendrum. Biochemical oxygen demand concentrations were significantly higher during spring runoff than during the rest of the year. Four out of 90 bacteria samples taken at Twin Valley indicate the presence of human fecal material, though bacteria densities do not exceed recommendations of the U.S. Environmental Protection Agency for public-water supplies. The dominace of organic-pollution tolerant phytoplankton in 49 out of 78 samples also indicates degradation of the river quality at Twin Valley. Nutrient concentrations at Twin Valley have no apparent effect on phytoplankton concentrations. None of the consitituents sampled were found to exceed recommended concentrations for public-water supplies.
Study Area
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Preimpoundment water quality of the Wild Rice River, Norman County, Minnesota |
| Series title | Water-Resources Investigations Report |
| Series number | 80-79 |
| DOI | 10.3133/wri8079 |
| Year Published | 1980 |
| Language | English |
| Publisher | U.S. Geological Survey |
| Publisher location | St. Paul, MN |
| Contributing office(s) | Minnesota Water Science Center |
| Description | iv, 36 p. |
| Country | United States |
| State | Minnesota |
| County | Norman County |
| Other Geospatial | Wild Rice River |
| Online Only (Y/N) | N |
| Additional Online Files (Y/N) | N |
| Google Analytic Metrics | Metrics page |