Publication Citation

USGS Series Open-File Report
Report Number 88-707
Title Basic hydraulic principles of open-channel flow
Edition -
Language ENGLISH
Author(s) Jobson, Harvey E.; Froehlich, David C.
Year 1988
Originating office
USGS Library Call Number (200) R29o no.88-707
Physical description viii, 150 p. ill. ;28 cm.
ISBN

Online Document Versions

In Stock at the USGS Store

Abstract

The three basic principles of open-channel-flow analysis--the conservation of mass, energy, and momentum--are derived, explained, and applied to solve problems of open-channel flow. These principles are introduced at a level that can be comprehended by a person with an understanding of the principles of physics and mechanics equivalent to that presented in the first college level course of the subject. The reader is assumed to have a working knowledge of algebra and plane geometry as well as some knowledge of calculus. Once the principles have been derived, a number of example applications are presented that illustrate the computation of flow through culverts and bridges, and over structures, such as dams and weirs. Because resistance to flow is a major obstacle to the successful application of the energy principle to open-channel flow, procedures are outlined for the rational selection of flow resistance coefficients. The principle of specific energy is shown to be useful in the prediction of water-surface profiles both in the qualitative and quantitative sense. (USGS)