Water Resources of Idaho

Estimating the Magnitude of Bankfull Flows for Streams in Idaho
by Jon E. Hortness and Charles Berenbrock

Water Resources-Investigations Report 03-4261

This document was created as a PDF document. It can be viewed with Acrobat 3.0 or higher.

The following errors were corrected on June 16, 2004: Page 6, table 2, description of basin slope, "feet per mile" was changed to "percent"; Page 9, table 3, headnote, basin slope in "feet per mile" was changed to basin slope in "percent"; Page 17, appendix A, headnote, "feet per mile" was removed.

For the past several years, the Boise Adjudication Team of the U.S. Forest Service has been focusing on quantification of water rights necessary to maintain or restore productive fish and wildlife habitat and riparian vegetation. This effort requires estimates of flows at and near bankfull stage. This report documents development of regression equations used for estimating the magnitude of peak flows with recurrence intervals of 1.5 and 2.33 years.

This report is only available on line -- view report (1838K). Download computer program for regional regression equations. 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.