Mid Snake River Water Quality Studies -- Phase I

Brockway, Charles E., Clarence W. Robison, 1992. Middle Snake River Water Quality Study Phase I, Final Report , Technical Completion Report, University of Idaho, Idaho Water Resources Research Institute, Moscow, Idaho.

Abstract

The Mid Snake River is defined as the reach between Milner Dam and King Hill. A data base of historical, pertinent water quality data were prepared. Additional water quality sampling was conducted for 55 sites including 13 instream locations, 10 fish hatchery discharges, 19 irrigation return flows, and 13 tributary streams for the period between July 1990 and June 1991. The data was analyzed to determine loads entering the Mid Snake River and loads within the river reach. The reach accumulates and transports up to 30 tons/day of nitrate+nitrite nitrogen (NO₂+NO₃--N), 2 tons per day of phosphorus (P), and 350 tons per day of suspended solids (sediments). The water quality in the reach is impaired by the nutrient and sediment loads and extreme flows experienced over the last four years.

Availability

This report is available from the Idaho Water Resources Research Institute University of Idaho, Moscow, Idaho, 83844-3011.
 

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