Reevaluating Spillway Adequacy of Existing Dams

by
Task Committee on the Reevaluation of the Adequacy of Spillways of Existing Dams of the Committee on Hydrometeorology of the Hydraulics Division, ASCE

Serial Information: Journal of the Hydraulics Division, 1973, Vol. 99, Issue 2, Pg. 337-372


Document Type: Journal Paper

Discussion: Dukleth Gordon W. (See full record)
Discussion: Jaske Robert T. (See full record)
Discussion: Lockett Wilfred G. (See full record)
Discussion: Wolofsky Lieb (See full record)
Discussion: Alexander Geoffrey N. (See full record)
Discussion: Biswas Asit K. (See full record)
Discussion: Williams Gordon R. (See full record)
Discussion: Amorocho Jaime (See full record)
Discussion: Hulman Lewis G. (See full record)
Discussion: Hawkins Edward F. (See full record)
Discussion: Bivins William S. (See full record)
Discussion: Posey Chesley J. (See full record)
Discussion: Butcher William S. (See full record)
Closure: (See full record)

Abstract: Spillway capacity is a vital factor in the review of the safety of a dam, particularly where overtopping could jeopardize human lives or cause catastrophic economic loss. The determination of the adequacy of spillways of existing dams should be based on a thorough economic analysis of the cost of risks and the cost of modifications. Modification is appropriate from an economic standpoint only if the total of these two costs is reduced. Proposed standards enable an engineer to determine an acceptable level of safety at a cost commensurate with the risks. If there are compelling reasons for selecting other than the lowest total cost, the reasons should be explained and the additional cost revealed. The economic analysis requires consideration of values of human life.

Subject Headings: Economic factors | Spillways | Risk management | Human factors | Dam safety | Wave overtopping | Public health and safety

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