Mean annual runoff and peak flow estimates based on channel geometry of streams in northeastern and western Montana / by Charles Parrett, R.J. Omang, and J.A. Hull.

Format:

Book

Government document

Author/Creator:

Parrett, Charles, author.

Hull, J. A., author.

Omang, R. J., author.

Contributor:

Geological Survey (U.S.), issuing body.

Montana. Department of Natural Resources and Conservation

United States. Bureau of Land Management

United States. Forest Service

Series:

Water-resources investigations report ; 83-4046.

Water-resources investigations report ; 83-4046

Language:

English

Subjects (All):

Runoff--Montana.

Runoff.

Stream measurements--Montana.

Stream measurements.

Montana.

Physical Description:

1 online resource (iv, 53 pages) : illustrations, maps.

Place of Publication:

Helena, Montana : U.S. Geological Survey, 1983.

Summary:

Equations for estimating mean annual runoff and peak discharge from measurements of channel geometry were developed for western and northeastern Montana. The study area was divided into two regions for the mean annual runoff analysis, and separate multiple-regression equations were developed for each region. The active-channel width was determined to be the most important independent variable in each region. The standard error of estimate for the estimating equation using active-channel width was 61 percent in the Northeast Region and 38 percent in the West region. The study area was divided into six regions for the peak discharge analysis, and multiple regression equations relating channel geometry and basin characteristics to peak discharges having recurrence intervals of 2, 5, 10, 25, 50 and 100 years were developed for each region. The standard errors of estimate for the regression equations using only channel width as an independent variable ranged from 35 to 105 percent. The standard errors improved in four regions as basin characteristics were added to the estimating equations.

Notes:

Also available online in PDF format from the U.S. Geological Survey Warehouse (http://pubs.er.usgs.gov/).

"June 1983."

Chiefly tables.

"Prepared in cooperation with the U.S. Bureau of Land Management, U.S. Forest Service, and Montana Department of Natural Resources and Conservation."

Includes bibliographical references (pages 25-26).

Description based on online resource; title from PDF title page (USGS, viewed Oct. 2, 2015).

Other Format:

Print version: Parrett, Charles. Mean annual runoff and peak flow estimates based on channel geometry of streams in northeastern and western Montana

OCLC:

966434393