Karl K. Lee Richard L. Kittelson Milo D. Crumrine 1996 <p>This report is a compilation of bridge-scour instrumentation information, bridge-scour data, and hydraulic data for nine sites studied in Oregon from October 1991 through September 1994. The Alsea Bay scour monitoring site was established to test new bridge-scour monitoring equipment, whereas the eight additional sites were established to monitor scour-hole elevations around piers and footings. These data were collected in cooperation with the Oregon Department of Transportation.</p> <p>Sonar depth sounders, scour chains, and scour detection arrays were tested during this study; however; all of the bridge-scour data collected were from sonar scour-monitoring devices. Scour was observed at three sites during the period while the nine scour-monitoring sites were in operation. Work on the project is continuing, and includes testing of new scour-monitoring devices in addition to bridge-scour data collection.</p> application/pdf 10.3133/ofr95366 en U.S. Geological Survey Bridge-scour instrumentation and data for nine sites in Oregon, 1991-94 reports