National Dam Safety Program. Wrights Mill Dam (NJ 00432), Delaware River Basin, Raccoon Creek, Gloucester County, New Jersey. Phase I Inspection Report.
Abstract
The dam is a 55 year-old earth embankment approximately 120 feet in length with a bridged spillway. An asphalt pavement (Elmer-Barnsboro Rd.) 30 feet in width runs along the crest. The spillway is a three sided concrete drop inlet with removable 3 in.-6 in. wide timber stoplogs on the front face. Steel sheet piling extends along the shoulder line on the upstream face of the dam on each side of the drop inlet. The maximum height of the dam is 13 feet at the culvert outlet. Wrights Mill Dam is assessed to be in a good overall condition and no physically detrimental conditions were observed but further hydraulic studies are recommended in the future to ascertain more accurately the capacity of the spillway. Overtopping of the dam could lead to a downstream embankment washout. Remedial actions recommended to be undertaken in the near future include (1) remove the dead trees and root systems on the downstream embankment slopes, (2) place riprap in the downstream channel and (3) place slope protection at the ends of the steel sheeting and downstream culvert wingwalls. The capacity of the spillway will accommodate only 24% of the one-half PMF design flood.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 01, 1979
- Accession Number
- ADA077762
Entities
People
- F. Keith Jolls
Organizations
- New Jersey Department of Environmental Protection