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- 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
01440000 FLAT BROOK NEAR FLATBROOKVILLE, NJ
LOCATION - Lat 41°06'22", long 74°57'09" referenced to North American Datum of 1983, Walpack Township, Sussex County, NJ, Hydrologic Unit 02040104, on right bank, 1.0 mi upstream from Flatbrookville, 1.5 mi upstream from mouth, and 5.3 mi southwest of Walpack Center.
DRAINAGE AREA - 64 mi².
REVISIONS HISTORY - WSP 1432: 1924(M), 1928(M), 1929, 1930(M), 1932, 1933(M), 1936, 1938(M), 1939-40, 1949(M), 1952-53(M). WDR NJ-80-2: 1970(M). WDR NJ-82-2: Drainage area.
SURFACE-WATER RECORDS
PERIOD OF RECORD - Continuous-record discharge station, July 1923 to current year.
GAGE - Water-stage and precipitation recorder with telemetry and crest-stage gage. Concrete control since Aug 19, 1929. Datum of gage is 346.98 ft above NAVD of 1988. Prior to Jan 6, 1926, non-recording gage at same site and datum.
REMARKS - Records fair, except for estimated discharges, which are poor. Flow occasionally regulated by ponds above station. Discharges above 4,500 ft³/s from rating curve extension on basis of slope-area measurement of peak flow at gage height 12.58 ft.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 10,200 ft³/s, gage height, 12.94 ft, from high-water mark in gage house, Aug 28, 2011, from rating curve extended above 4,500 ft³/s on basis of slope-area measurement of peak flow at gage height 12.58 ft; minimum discharge, 3.6 ft³/s, Sep 25, 1964.
WATER-QUALITY RECORDS
PERIOD OF RECORD - Discrete Water Quality: 1923-24, 1956-57, 1959-80, 1993, 1995, 1997 to current year.
Continuous Water Quality: Water temperature and specific conductance Feb 2020 to current year.
REMARKS -
The accuracy of continuous water-quality data can be found here.
EXTREMES FOR PERIOD OF RECORD - Maximum water temperature, 28.4 deg C, many days; minimum water temperature, -0.1 deg C, many days.
Maximum specific conductance, 309 uS/cm, many days; minimum specific conductance, 41 uS/cm, many days.
