thumbnail

Using channel geometry to estimate flood flow at ungaged sites in Idaho

Water-Resources Investigations Report 80-32

By:

Links

  • The Publications Warehouse does not have links to digital versions of this publication at this time
  • Download citation as: RIS

Abstract

Measurements at bankfull stage were made at 136 sites in Idaho to determine whether predictions of flood discharge using channel-geometry characteristics are as good as or better than predictions using basin characteristics. These measurements are used to determine the variables of bankfull width, area, depth, and velocity. These variables are combined with basin characteristics for the sites, and multiple-regression techniques are used to select the best combination of variables to estimate the 10-year flood. To achieve the lowest standard error of estimate, the data set is divided into segments based on percentage of forest cover. Generally, discharge estimates obtained from equations using channel characteristics have smaller standard errors than those using basin characteristics. (USGS)

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Using channel geometry to estimate flood flow at ungaged sites in Idaho
Series title:
Water-Resources Investigations Report
Series number:
80-32
Edition:
-
Year Published:
1980
Language:
ENGLISH
Publisher:
U.S. Dept. of the Interior, Geological Survey ; available through the N.T.I.S.,
Description:
ii, 39 p. :ill., map ;27 cm. [PGS: 57 p.]