USGS Water-Year Summary 2021
01125100 FRENCH RIVER AT NORTH GROSVENORDALE, CT
LOCATION - Lat 41°58'42.47", long 71°54'01.85" referenced to North American Datum of 1983, Windham County, CT, Hydrologic Unit 01100001, at Red Bridge Rd., 0.5 mi south of North Grosvenordale, 0.45 mi downstream from Backwater Brook, 1.2 mi upstream from Stoud Brook.
DRAINAGE AREA - 101 mi².
PERIOD OF RECORD - Discharge: June 2000 to September 2001, June 2002 to current year. Gage heights and discharge measurements only: October 1991 to June 2000.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 350 ft. above National Geodetic Vertical Datum of 1929 (from topographic map). Non-recording gage October 1991 to June 2000. Satellite telemetry at station.
EXTREMES FOR PERIOD OF RECORD - Minimum discharge: 3.3 ft³/s, Sep. 15, 2010.
PERIOD OF RECORD - October 1991 to current year.