USGS Water-Year Summary 2022
01122000 NATCHAUG RIVER AT WILLIMANTIC, CT
LOCATION - Lat 41°43'12.36", long 72°11'44.07" referenced to North American Datum of 1983, Windham County, CT, Hydrologic Unit 01100002, on left bank at upstream side of bridge on State Rt. 66, 1 mi northeast of Willimantic, 1.6 mi upstream from mouth, and 3.7 mi downstream from Mansfield Hollow Dam.
DRAINAGE AREA - 174 mi².
- WSP 1301: 1934-35 (M), 1937 (M). WDR CT-83-1: Drainage area.
PERIOD OF RECORD - Discharge: October 1930 to September 1989, October 1995 to current year. Water-quality records: water years 1954, 1958, 1968.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 150.31 ft above National Geodetic Vertical Datum of 1929 (levels by Corps of Engineers). Oct. 6, 1930, to June 6, 1974, water-stage recorder on right bank 500 ft upstream at same datum. June 6, 1974 to Aug. 26, 1975, staff gage at present site and datum. Telephone telemetry at station. Satellite telemetry at station.
EXTREMES FOR PERIOD OF RECORD - The maximum peak flow of 32,000 ft³/s was from computation of peak flow over dam 2 mi upstream. The maximum stage of 16.39 ft. was from flood marks.