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Measurement of peak discharge at width contractions by indirect methods

Techniques of Water-Resource Investigation 03-A4

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Abstract

This chapter describes procedures for measuring peak discharges using open-channel width contractions. Field and office procedures limited to this method are described. The discharge equation based on the continuity and energy equations between an approach cross section and the contracted section under a bridge or contraction is given. Contractions are classified into four geometric types. Discharge coefficients and computation procedures are given with a complete facsimile example of computation of a contracted-opening measurement. Additional procedures are given for multiple-opening contractions.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Measurement of peak discharge at width contractions by indirect methods
Series title:
Techniques of Water-Resource Investigation
Series number:
03-A4
Edition:
-
Year Published:
1967
Language:
ENGLISH
Publisher:
U.S. Govt. Print. Off.,
Description:
viii, 44 p. :ill. ;26 cm. Reprinted in 1984.