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Estimated flood stage for this gage is 9 feet. This station is subject to backwater from the Passaic River during periods of high flow. At low flows diurnal fluctuations are noted and are probably due to patterns of sewage effluent entering the stream at several points upstream of gage.
LOCATION.--Lat 40°50'42", long 74°20'50" referenced to North American Datum of 1983, PARSIPPANY-TROY HILLS T, Morris County, NJ, Hydrologic Unit 02030103, on left upstream wingwall of former bridge on Edwards Road, 200 ft downstream from bridges of Interstate 280, 0.4 mi upstream from Rockaway River, and 1.2 mi southwest of Pine Brook.
DRAINAGE AREA.--68.5 mi2.
PERIOD OF RECORD. --Low-flow partial-record station water years 1963-69, 1973, 1979-96. November 1992 to September 1996 (gage height and discharge measurements only), October 1996 to current year.
GAGE. --Water-stage recorder, velocity meter (since June 2004), and crest-stage gage. Datum of gage is 162 ft above NGVD of 1929 (from Corps of Engineers' topographic map).
COOPERATION. --Funding for this gage is provided by the New Jersey Department of Environmental Protection and the U.S. Geological Survey.
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Value Dec 20