USGS Water-Year Summary 2023
01199000 HOUSATONIC RIVER AT FALLS VILLAGE, CT
LOCATION - Lat 41°57'26", long 73°22'11" referenced to North American Datum of 1927, Litchfield County, CT, Hydrologic Unit 01100005, on left bank at hydroelectric plant of Firstlight Power Resources at Falls Village, 1.4 mi downstream from Hollenbeck River, and at mile 75.9.
DRAINAGE AREA - 634 mi².
- WSP 781: Drainage area.
PERIOD OF RECORD - Discharge: July 1912 to current year. Water-quality: water years 1974-80.
GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 529.06 ft above National Geodetic Vertical Datum of 1929 (levels by Corps of Engineers). Prior to Oct. 26, 1964, at site 0.6 mi downstream at datum 6.72 ft lower. Satellite telemetry at station.
EXTREMES FOR PERIOD OF RECORD - The maximum peak flow was 23,900 ft³/s. Maximum stage of 19.40 ft. was from flood marks at present site and datum. There was practically no instantaneous low flow for many water years at times when the power plant was shut down. Instantaneous low flows are generally the result of regulation.