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MIDDLE REACH OF THE SNAKE RIVER: WATER QUALITY AND BENTHIC BIOMONITORING
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This study examined spatial and temporal trends in water quality, sestonic and benthic algal concentrations, and benthic macroinvertebrate taxa richness, population density, and biomass at nine stations along the Middle Snake River from Pillar Falls to Upper Salmon Falls Dam. Primary objectives of the study were to determine: (1) general trends in water quality over time; (2) locations in the Middle Snake River receiving major nutrient inputs; and (3) spatial and temporal trends in macroinvertebrate assemblages. Sampling was conducted in 1992 (April to October), 1993 (June to November), and 1994 (April to November) by the Stream Ecology Center at the University of Idahos Department of Biological Sciences. The study was conducted in support of Idahos Nutrient Management Plan. Data sets include: water quality (physical and chemical parameters), periphyton, benthic macroinvertebrates, and discharge.