HOMS COMPONENT

GENERAL FIELD AND OFFICE PROCEDURES FOR INDIRECT DISCHARGE MEASUREMENTS

1.   Purpose and objectives

     Overview of the purpose, data collection, and computation of a peak discharge after passage of the flood.

2.   Description

     Indirect measurements of peak discharge are used when current-meter measurements were not made or were not possible. The manual covers:

     site selection,
     surveying methods,
     identification of high-water marks,
     locations of cross sections to be surveyed,
     stability of cross sections,
     selection of roughness coefficient,
     definition of high-water profile, and
     method of computing discharge.

     Subsequent manuals give details of data needed and methods of computation for the various hydraulic conditions.

3.   Input

     Not applicable.

4.   Output

     Not applicable.

5.   Operational requirements and restrictions

     Best results will be obtained by a person with field experience in open channel hydraulics.

6.   Form of presentation

     Handbook in English.

7.   Operational experience

     These procedures have been used by the U.S. Geological Survey for many  years.

8.   Originator and technical support

     U.S. Geological Survey.

 
9.   Availability

     From the HOMS National Reference Centre for USA.

10.  Conditions on use

     None.

Last updated: 1 SEP 87)
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