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USGS 01455500 Musconetcong River at outlet of Lake Hopatcong NJ


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During winter months, cold and ice may result in inaccurate real-time gage height and streamflow data. Adjustments or deletions of this data can only be done after detailed analysis.


LOCATION.--Lat 40°55'02", long 74°39'56" referenced to North American Datum of 1983, Roxbury Township, Morris County, NJ, Hydrologic Unit 02040105, on left bank just upstream of highway bridge on Lakeside Boulevard (County Route 607), 300 ft downstream from Lake Hopatcong Dam in Landing.
DRAINAGE AREA.--25.3 mi2.
PERIOD OF RECORD.--Continuous-record gaging station, July 1928 to September 1975, April 2002 to current year. Annual maximum, water years 1976 to 1995, 2000.
REVISED RECORDS.--WSP 781:1928(M). WSP 1051:1944-1945. WDR NJ-78-2: 1976(M). WDR NJ-82-2: Drainage area. WDR NJ-04-1:2000(M).
GAGE.--Water-stage and precipitation recorder with telemetry and concrete control. Prior to August 24, 1967, concrete control at site 40 ft downstream. Datum of gage is 904.99 ft above NGVD of 1929 (New Jersey Geological Survey benchmark).
REMARKS.--Records fair, except for estimated daily discharges, which are poor. Flow regulated by Lake Hopatcong (see 01455400).
EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 1,900 ft3/s, Aug 13, 2000, from computation of peak flow over dam; maximum gage height, 10.90 ft, Aug 13, 2000, from high-water mark in gage house (level of Lake Hopatcong highest since dam was built in 1828); minimum discharge, 0.0 ft3/s, Jan 1, 1900.

Peak Flood Chart

Gage Photo

Estimated flood stage for this gage is 4 feet.

Rain gage data are available from this location at this link.

Lake level data for Lake Hopatcong are available at this link.

This station managed by the New Jersey Water Science Center.

Available Parameters Available Period
All 2 Available Parameters for this site
00060 Discharge 2007-10-01  2016-10-26
00065 Gage height 2007-10-01  2016-10-26

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Discharge, cubic feet per second

Most recent instantaneous value: 8.2   10-26-2016   18:15 EDT
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Daily discharge, cubic feet per second -- statistics for Oct 26 based on 60 years of record more
Most Recent
Value Oct 26
Median Mean 75th
3.0 8.2 28 30 58 59 270

Gage height, feet

Most recent instantaneous value: 1.17   10-26-2016   18:15 EDT
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