Grade-Control Structures for Salt River Channelization

by Dennis L. Richards, (M.ASCE),
Tim Morrison, (M.ASCE),

Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water


Soil cement grade-control structures have been designed and constructed in conjunction with channelization projects along the Salt River in Phoenix, Arizona. The structures were designed for submerged flow conditions, and a key factor in the design is the estimation of local scour below the downstream face. The estimate of local scour was based on results of a physical model study conducted for Pima County, Arizona to predict local scour below grade-control structures for flow under submerged conditions. This paper will discuss design considerations of these structures.

Subject Headings: Submerged flow | Scour | Erosion | Drop structures | Channels (waterway) | Underwater structures | Structural design | Arizona | United States | Phoenix

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