Trap efficiency of reservoirs

Eos, Transactions, American Geophysical Union



Forty-four records of reservoir trap efficiency and the factors affecting trap efficiency are analyzed. The capacity-inflow (C/I) ratio is found to offer a much closer correlation with trap efficiency than the capacity-watershed (C/W) ratio heretofore widely used. It appears likely from the cases studied that accurate timing of venting or sluicing operations to intercept gravity underflows can treble or quadruple the amount of sediment discharged from a reservoir. Desilting basins, because of their shape and method of operation, may have trap efficiencies above 90 pct even with very low C/I ratios.

Semi-dry reservoirs with high C/I ratios, like John Martin Reservoir, may have trap efficiencies as low as 60 pct. Truly “dry” reservoirs, such as those in the Miami Conservancy District, probably have trap efficiencies in the 10 to 40 pct range, depending upon C/I ratio

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Trap efficiency of reservoirs
Series title Eos, Transactions, American Geophysical Union
DOI 10.1029/TR034i003p00407
Volume 34
Issue 3
Year Published 1953
Language English
Publisher American Geophysical Union
Contributing office(s) Kansas Water Science Center
Description 12 p.
First page 407
Last page 448
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