USGS Water-Year Summary 2019
01403570 STONY BROOK AT NORTH PLAINFIELD, NJ
LOCATION - Lat 40°37'19", long 74°26'10" referenced to North American Datum of 1983, North Plainfield Boro, Somerset County, NJ, Hydrologic Unit 02030105, on upstream right wingwall of bridge on Green Brook Road, in North Plainfield, 100 ft downstream of Crab Brook, and 1.4 mi upstream of mouth.
DRAINAGE AREA - 6.88 mi².
PERIOD OF RECORD
Annual maximum gage, water years 1938, 1973, 1975-83, 1991-2013. Continuous-record gage-height station with annual maximum discharge, water years 2014 to current year.
GAGE - Water-stage recorder with telemetry and crest-stage gage. Datum of gage is 71.69 ft above NGVD of 1929.
EXTREMES OUTSIDE PERIOD OF RECORD - The flood of Aug 2, 1973 reached a gage height of 10.65 ft, discharge, not determined.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 3,140 ft³/s, Aug 28, 2011, gage height, 8.36 ft, from rating extended above 400 ft³/s from rating curve extension based on logarithmic extrapolation; gage height of 8.36 ft also occurred on Sep 16, 1999, discharge, not determined.