During winter months, cold and ice may
result in inaccurate real-time lake or reservoir elevation data.
Adjustments or deletions of this data can only be done after detailed
Funding for this site is provided by:
Lat 40°59'34", long 74°16'44"
referenced to North American Datum of 1983, Pompton Lakes Borough,
Passaic County, NJ, Hydrologic Unit 02030103, on right bank at Pompton
Dam, 450 ft upstream from bridge on Paterson-Hamburg Turnpike in
Pompton Lakes, and 2.0 mi upstream from mouth.
PERIOD OF RECORD.--
Continuous-record discharge station, October
1921 to November 2004, published as "Ramapo River at Pompton
Lakes, NJ (01388000)". Continuous-record gage-height
station, October 2009 to current.
Water-stage recorder with telemetry. Datum of gage is
190.96 ft above NGVD of 1929. Prior to Oct 1, 1981, at datum 10.0 ft
Since April 2007, two flood gates in dam control lake
level. Annual peak data can be obtained by selecting Peak streamflow
from the 'Available data for this site' drop-down menu above or
by using this
EXTREMES FOR PERIOD OF RECORD.--
Maximum gage height, 15.21 ft ,
April 5, 1984
Rain gage data are available from this location at this link.
Data from the gage located downstream of the Pompton Lakes Dam
(01388000) is available at this link.
The water temperature data for this station
are temporary and will only be displayed for 120 days. Although the
instrumentation is calibrated at least once/year, the temporary
classification means that documented routine inspections and other
quality assurance measures are not performed that would make the data
acceptable for archival, retrieval, or future use in general scientific
or interpretive studies.