ASDSO Dam Safety Toolbox

Design and Construction of Auxiliary Spillways

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“The general considerations for selecting the type and size of a new spillway and/or modifying an existing spillway include: project requirements (frequency and duration of operation, along with flood control requirements); dam type (concrete, embankment, composite); site conditions (topography, geology, and climate); hydrologic and seismic loading requirements; and diversion during construction requirements”.[1]

Best Practices Resources

Design Standards No. 14: Appurtenant Structures for Dams (Ch. 3: General Spillway Design Considerations)


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Revision ID: 4855
Revision Date: 12/02/2022