from Pompton Lake in Wayne Township and the Borough of Pompton Lakes, upstream through the Borough of Oakland

to West Oakland Avenue, a distance of 3.3 miles. The authorized plan for flood damage reduction along the project area

includes channel modification of 5,800 feet of the Ramapo River and the relocation of the Doty Road Bridge. The

authorized plan also calls for the installation of flood control gates at the existing Pompton Lake Dam. Mitigation for the

environmental impacts of the plan includes the creation of an eight-acre wetland in Potash Lake.

The principal problem along the Ramapo River is flooding caused by the backwater effect produced by the Pompton Lake

Dam, the hydraulic constrictions produced by bridges crossing the river, and insufficient channel capacity. Flooding has

occurred frequently, with the most recent events in 1968, 1970, 1971, 1973, 1977, 1978, 1979, 1980, 1983, 1984, 1987,

1993, January 1996, September 1999, April 2005, October 2005, and April 2007.

The April 1984 flood was the most severe causing $9,500,000 in damages (October 1995 price level). The flood had a

recurrence frequency of 2 percent (a 50-year flood event). It is estimated that if a storm with a 1 percent recurrence

frequency (100-year event) were to occur, approximately 350 structures would sustain damages, resulting in

approximately $11,600,000 in damages (October 1995 price level).

AUTHORIZATION: The Ramapo River was studied as part of the Passaic River Basin Phase I Advanced Engineering

and Design Study which was authorized by the Water Resources Development Act of 1976 (Public Law 94-587, October

22, 1976). Congressional guidance for the conduct of the study is included in House of Representatives Report 94-1702.

The project was authorized for construction under the Water Resources Development Act (WRDA) of 1986 (Public Law

99-662) and reauthorized in WRDA 1996 (PL 104-303). The sponsor is the New Jersey Department of Environmental

Protection.

STATUS: The overall project includes three separate construction features. The first and second features including

widening and deepening the existing Ramapo River and creation of wetlands in Potash Lake are complete. The third

during the April 15-17 2007 flooding event. Final testing and training are underway.

Estimated Federal Cost $19,600,000

Estimated Non-Federal Cost $2,000,000

Total

$21,600,000

U.S. Army Corps of Engineers, New York District

26 Federal Plaza

New York, NY 10278 http://www.nan.usace.army.mil

Congressional District: NJ-5, NJ-8

Used with permission of the USACE

The U.S. Government retains a non-exclusive, royalty-free license to publish or reproduce these documents, or allow others to do so, for U.S. Government purposes. These documents may be freely distributed and used for non-commercial, scientific and educational purposes.