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UPPER SNAKE RIVER, MAIN STEM (LAKE WALCOTT TO IDAHO-WYOMING BORDER), IDAHO. WATER QUALITY STATUS REPORT 1977
Description:
This study sampled 17 water quality stations in the Upper Snake River, Idaho (1704) on a bi-weekly basis. The area extended from Heise and Rexburg to the Raft River. Two point sources (Idaho Falls and Blackfoot Sewage Treatment Plants) and 2 tributaries (Blackfoot and Raft Rivers) were sampled. Point sources and tributaries to this section of the Upper Snake River have insignificant effects on annual loadings. Percentage increases for these 4 sources, for 6 parameters, ranged from 0.01% to 7.54%. However, non-point sources are adversely influencing water quality. Percentage increases for selected non-point source areas range from as high as 225%. Specific problem pollutants are: total and suspended solids, ortho-phosphate phosphorus, and nitrate nitrogen. Perry, J. 1977. Water Quality Status Report No. WQ-29. Idaho Department of Health and Welfare, Division of Environment, Boise, ID. 26 pp.