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National Weather Service flood stage for this gage is 9.0 ft.
Nitrogen (NO3+NO2) and Total Chlorophyll A values have been adjusted by applying regression analysis of in-stream measurements to lab-analyzed environmental samples. To date, the range of lab-analyzed samples are:
Nitrogen (NO3+NO2)Left, 0.3 to 6.2 mg/L
Values beyond the range of lab-analyzed samples have been extrapolated and are flagged in the graph as having a greater associated uncertainty. These threshold values may change as additional data become available.
LOCATION.--Lat 40°53'47", long 74°16'09" referenced to North American Datum of 1983, Wayne Township, Passaic County, NJ, Hydrologic Unit 02030103, on left bank on Fairfield Road in Two Bridges, 400 ft downstream from the Pompton River, 1.4 mi northwest of Little Falls, and 3.2 mi upstream of Beatties Dam.
DRAINAGE AREA.--734 mi2.
PERIOD OF RECORD.--Annual maximum, water years 1989 to current year. Occasional low-flow measurements, water years 1991 and 1996 to current year.
GAGE.--Water-stage recorder. Datum of gage is 155.00 ft above NGVD of 1929. This station is 400 feet downstream from the mouth of the Pompton River, on the left bank of the Passaic River. One water-quality sensor measures the characteristics of water pumped sequentially from three separate intakes. Looking downstream, the left, middle, and right intakes are approximately 70, 160, and 220 feet, respectively, from the left bank.
COOPERATION.--Funding for this gage is provided by North Jersey District Water Supply Commission, U.S. Army Corps of Engineers - New York District, Passaic Flood Warning System, and New Jersey Deparment of Environmental Protection.