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UPPER SNAKE RIVER BASIN WATER QUALITY ASSESSMENT, 1976
Description:
This package contains information for the Upper Snake River Basin, Idaho (170402, 17040104). The report contains a water quality assessment approach which will assist EPA planners, land agencies, and state and local agencies in identifying probably nonpoint sources and determining their effects upon the fishable-swimmable aspect of Regional streams. Generally the approach is to determine the biological, recreational, and water quality status of Regional streams and to display each status on color coded STORET basin maps. This information is to be related to land use and land ownership as well as other factors such as hydro-modifications, river flows, mining activities, and point source discharges. The information obtained and compiled is general, however, it indicates probable cause and effect relationships related to land use and land ownership. The backup information on field tables, STORET print-outs, and maps allows the user to make more detailed evaluations. Specific information gathering investigations in problem areas would be necessary for an accurate cause and effect picture. Surveillance and Analysis Division, Water Survey and Investigation Section, USEPA Region X, Seattle, WA.