Reference Surfaces for Bridge Scour Depths

by Mark N. Landers, U.S. Geological Survey, Reston, United States,
David S. Mueller, U.S. Geological Survey, Reston, United States,

Document Type: Proceeding Paper

Part of: Hydraulic Engineering


Depth of scour is measured as the vertical distance between scoured channel geometry and a measurement reference surface. A scour depth measurement can have a wide range depending on the method used to establish the reference surface. A consistent method to establish reference surfaces for bridge scour measurements is needed to facilitate transferability of scour data an scour analyses. This paper describes and evaluates techniques for establishing reference surfaces from which local and contraction scour are measured.

Subject Headings: Scour | Channels (waterway) | Geometrics | Field tests | Erosion | Distance measurement | Data analysis

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