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Water-Resources Investigation Report 99-4175

Methods to Determine Pumped Irrigation-Water Withdrawals from the Snake River Between Upper Salmon Falls and Swan Falls Dams, Idaho, Using Electrical Power Data, 1990-95

Molly A. Maupin
Abstract

Pumped withdrawals compose most of the irrigation-water diversions from the Snake River between Upper Salmon Falls and Swan Falls Dams in southwestern Idaho. The number of pumps at which withdrawals are being continuously measured has been steadily decreasing, from 32 in 1990 to 7 in 1998. A cost-effective and accurate means of estimating annual irrigation-water withdrawals at pump sites that are no longer measured was needed.The U.S. Geological Survey began a study in 1998, as part of its Water-Use Program, to determine power-consumption coefficients (PCCs) for each pump site so that withdrawals could be estimated by using electrical power-consumption and total head data.

View Water-Resources Investigation Report 99-4175 PDF (268 KB)

The discussion of statistical comparisons and figures 4-6 showing the relation between power-consumption coefficients and total head were expanded on February 11, 2000 to include the equation of the regression line

Suggested Citation

Maupin, M.A., 1999, Methods to determine pumped irrigation-water withdrawals from the Snake River between upper Salmon Falls and Swan Falls Dams, Idaho, using electrical power data, 1990-95: U.S. Geological Survey Water-Resources Investigation Report Report 99-4175, 20 p.