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Instrumentation for Detailed Bridge-Scour Measurements

by Mark N. Landers, USGS, Reston, United States,
David S. Mueller, USGS, Reston, United States,
Roy E. Trent, USGS, Reston, United States,



Document Type: Proceeding Paper

Part of: Hydraulic Engineering

Abstract:

A portable instrumentation system is being developed to obtain channel bathymetry during floods for detailed bridge-scour measurements. Portable scour measuring systems have four components: sounding instrument, horizontal positioning instrument, deployment mechanisms, and data storage device. The sounding instrument will be a digital fathometer. Horizontal position will be measured using a range-azimuth based hydrographic survey system. The deployment mechanism designed for this system is a remote-controlled boat using a small waterplane area, twin-hull design. An on-board computer and radio will monitor the vessel instrumentation, record measured data, and telemeter data to shore.

Subject Headings: Scour | Instrumentation | Bridges | Bathymetry | Small craft | Channels (waterway) | Shores

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