Click
to
hide
Water-Year
Summary
instructions
and
information
- Water-Year Summary reports summarize a year of hydrologic data in a printer-friendly format.
- For water years 2014 onward, choose a water year and parameter and an on-demand Water-Year Summary report will be generated.
- For water years 2006 through 2013, choose a water year and an Annual Water Data Report will be provided.
- For water years 2005 and earlier, Annual Water Data Reports may be available in digital format.
- Not all sites have reports available for every water year.
USGS Water-Year Summary 2024
01405400 MANALAPAN BROOK AT SPOTSWOOD, NJ
LOCATION - Lat 40°23'22", long 74°23'26" referenced to North American Datum of 1983, Spotswood Borough, Middlesex County, NJ, Hydrologic Unit 02030105, on right bank upstream of DeVoe Lake Dam in Spotswood, 0.1 mi upstream from Cedar Brook, and 0.6 mi upstream from confluence with Matchaponix Brook.
DRAINAGE AREA - 40.7 mi².
REVISIONS HISTORY - WSP 1722:1957-60, WDR NJ-2005-1:1989(M), WDR-US-2006:2005(m).
SURFACE-WATER RECORDS
PERIOD OF RECORD - Continuous-record discharge station, January 1957 to current year.
GAGE - Water-stage recorder with telemetry. Datum of gage is NGVD of 1929 (levels by Duhernal Water System). January 1957 to September 1966 at datum 17.72 ft higher. From October 1966 to September 30, 2019, water-stage recorder 100 ft upstream above concrete dam for Devoe Lake at same datum.
REMARKS - Records fair, except for estimated discharges, which are poor. Discharge given herein includes flow over dam and through sluice gates when open. Some regulation by Lake Manalapan, Helmetta Pond, and DeVoe Lake.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 6,550 ft³/s, estimated, includes estimated flow through sluice gates, Aug 28, 2011, gage height, 22.22 ft, from high-water mark; minimum discharge, 0.0 ft³/s, many days, undetermined amount of leakage through sluice gates when closed and lake level is below spillway crest.
