Water Resources of Idaho

Two-Station Comparison of Peak Flows to Improve Flood-Frequency Estimates for Seven Streamflow-Gaging Stations in the Salmon and Clearwater River Basins, Central Idaho by Charles Berenbrock

Water Resources-Investigations Report 03-4001

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Improved flood-frequency estimates for short-term streamflow-gaging stations were needed to support instream flow studies by the U.S. Forest Service, which are focused on quatifying water rights necessary to maintain or restore productive fish habitat. Because peak-flow data for short-term gaging stations can be biased by having been collected during an unusually wet, dry, or otherwise unrepresentative period of record, the data may not represent the full range of potential floods at a site. To test whether peak-flow estimates for short-term gaging stations could be improved, the two-station comparison method was used to adjust the logarithmic mean and logarithmic standard deviaton of peak flows for seven short-term gaging stations in the Salmon and Clearwater River Basins, central Idaho.

This report is available only on line -- view report (3653K). For further information concerning this report please contact Charles Berenbrock - (208)387-1301. If you encounter problems viewing this report please contact Linda Channel by phone at (208)387-1305 or email at lchannel@usgs.gov.

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