Measurement of peak discharge at width contractions by indirect methods
Techniques of Water-Resources Investigations
03-A4
By: Howard Frederick Matthai
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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.
Suggested Citation
Matthai, H.F., 1967, Measurement of peak discharge at width contractions by indirect methods: U.S. Geological Survey Techniques of Water-Resources Investigations 03-A4, viii, 44 p. :ill. ;26 cm. Reprinted in 1984., https://doi.org/10.3133/twri03A4.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Measurement of peak discharge at width contractions by indirect methods |
| Series title | Techniques of Water-Resources Investigations |
| Series number | 03-A4 |
| DOI | 10.3133/twri03A4 |
| Year Published | 1967 |
| Language | ENGLISH |
| Publisher | U.S. Govt. Print. Off., |
| Description | viii, 44 p. :ill. ;26 cm. Reprinted in 1984. |