A method for estimating mean and low flows of streams in national forests of Montana
Water-Resources Investigations Report
85-4071
By: Charles Parrett and J. A. Hull
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Abstract
Equations were developed for estimating mean annual discharge, 80-percent exceedance discharge, and 95-percent exceedance discharge for streams on national forest lands in Montana. The equations for mean annual discharge used active-channel width, drainage area and mean annual precipitation as independent variables, with active-channel width being most significant. The equations for 80-percent exceedance discharge and 95-percent exceedance discharge used only active-channel width as an independent variable. The standard error or estimate for the best equation for estimating mean annual discharge was 27 percent. The standard errors of estimate for the equations were 67 percent for estimating 80-percent exceedance discharge and 75 percent for estimating 95-percent exceedance discharge. (USGS)
Suggested Citation
Parrett, C., Hull, J.A., 1985, A method for estimating mean and low flows of streams in national forests of Montana: U.S. Geological Survey Water-Resources Investigations Report 85-4071, iii, 13 p. :maps ;28 cm., https://doi.org/10.3133/wri854071.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | A method for estimating mean and low flows of streams in national forests of Montana |
| Series title | Water-Resources Investigations Report |
| Series number | 85-4071 |
| DOI | 10.3133/wri854071 |
| Year Published | 1985 |
| Language | ENGLISH |
| Publisher | U.S. Geological Survey, |
| Description | iii, 13 p. :maps ;28 cm. |