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Techniques for estimating magnitude and frequency of floods in Minnesota

Water-Resources Investigations Report 77-31

Prepared in cooperation with the Minnesota Department of Transportation, Division of Highways and Minnesota Department of Natural Resources, Division of Waters
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Abstract

 Estimating relations have been developed to provide engineers and designers with improved techniques for defining flow-frequency characteristics to satisfy hydraulic planning and design requirements. The magnitude and frequency of floods up to the 100-year recurrence interval can be determined for most streams in Minnesota by methods presented. By multiple regression analysis, equations have been developed for estimating flood-frequency relations at ungaged sites on natural flow streams. Eight distinct hydrologic regions are delineated within the State with boundaries defined generally by river basin divides. Regression equations are provided for each region which relate selected frequency floods to significant basin parameters. For main-stem streams, graphs are presented showing floods for selected recurrence intervals plotted against contributing drainage area. Flow-frequency estimates for intervening sites along the Minnesota River, Mississippi River, and the Red River of the North can be derived from these graphs. Flood-frequency characteristics are tabulated for 201 paging stations having 10 or more years of record.

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Additional publication details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Techniques for estimating magnitude and frequency of floods in Minnesota
Series title:
Water-Resources Investigations Report
Series number:
77-31
Year Published:
1977
Language:
English
Publisher:
U.S. Geological Survey
Publisher location:
St. Paul, MN
Contributing office(s):
Minnesota Water Science Center
Description:
iv, 33 p.
Country:
United States
State:
Minnesota
Online Only (Y/N):
N
Additional Online Files (Y/N):
N