Effective Discharge Calculation

Abstract

The purpose of this Technical Note is to describe the methodology known as the effective discharge approach for estimating channel-forming discharge in stable alluvial streams. While channel-forming discharge presented by ERDC/CHL CHETN-VIII-5 can be estimated by two other methodologies (the bankfull discharge and the specified recurrence interval discharge, only the effective discharge approach is discussed here. The effective discharge transports the largest fraction of the bed-material load and, hence, can be a good estimator for channel-forming discharge. However, the effective discharge should not be assumed to be the channel-forming discharge a priori without confirmation using field indicators of geomorphic significance. This procedure for effective discharge calculations has been developed for a range of river types. It is a systematic method designed to have general applicability. The effective discharge procedure requires both hydrological and sediment data.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2000
Accession Number
ADA607403

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  • D. S. Biedenharn
  • R. R. Copeland

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  • Engineer Research and Development Center

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