National Dam Safety Program. University Commons Dam (VA 76008), James River Basin, Richmond, Virginia. Phase I Inspection Report

摘要

University Commons Dam is a zoned earthfill structure about 300 ft long and 24 ft high. The spillway consists of an ogee shaped, concrete overflow spillway, which extends 254 ft across the dam. The dam is small size structure and is assigned a high hazard classification. The dam is located on Little Westhampton Creek, on the Campus of the University of Richmond in the City of Richmond, Virginia. The lake is used for recreation and is owned and maintained by the University of Richmond. The University Commons Dam spillway runs under the University Commons Building with a 6 ft clearance. The spillway abutments are part of the building foundation, and the building comprises the balance of the dam length beyond the spillway. Based on the criteria established by the Department of the Army, Office of the Chief of Engineers (OCE), the appropriate Spillway Design Flood (SDF) is the 1/2 PMF. The spillway will pass 75 percent of the Probable Maximum Flood (PMF) or 150 percent of the SDF without reaching the masonry overhang of the University Commons Building. The spillway is rated adequate. The visual inspection did not reveal any problems which would require immediate attention. The dam is considered stable and a stability analysis is not required. An emergency operation and warning plan should be developed.