Measurement of Peak Discharge at Dams by Indirect Methods

U.S. Geological Survey, Techniques of Water-Resources Investigations, Book 3, Chapter A5

By Harry Hulsing

Table of Contents

Preface

Symbols and units

Abstract

Introduction

Selection of site

Field procedures

High-water profiles

Cross sections

Dam details

Crest shape

Piers and abutments

Gates and flashboards

Debris

Water bypassing the crest of the dam

Pictures

Office procedures

Piers and abutments

Weirs not level

Weirs with curved or angled crest in plan

Determination of weir height

Rectangular sharp-crested weirs

Basic equation

Discharge coefficients

Submerged sharp-crested weirs

Broad-crested weirs

Definitions

Basic equation

Discharge coefficients

Submerged broad-crested weirs

Round-crested weirs

Basic equation

Discharge coefficients

Nappe-fitting method

Definitions for reference weir

Procedure for determining design head

Head-discharge coefficient relations

Example

Index-measurement method

Effect of abutments and piers

Submerged round-crested weirs

Highway embankments

Definitions

Basic equation

Length of flow section

Discharge coefficients

Submerged highway embankments

Weirs of unusual shape

Selected references

Back

AccessibilityFOIAPrivacyPolicies and Notices
U.S. Department of the Interior, U.S. Geological Survey Persistent URL: Page Contact Information: Publishing Service Center Last modified: Tuesday, August 09 2005, 05:10:32 PM

---