USGS Water-Year Summary 2024

01208925 MILL RIVER NEAR FAIRFIELD, CT

LOCATION - Lat 41°09'55.71", long 73°16'12.03" referenced to North American Datum of 1983, Fairfield County, CT, Hydrologic Unit 01100006, on right bank just downstream from bridge on Duck Farm Rd., 1.5 mi north of Fairfield, 18.3 mi downstream from headwater of Aspetuck River, 14.0 mi downstream from headwater of Mill River, and 2.3 mi upstream from mouth at Southport Harbor.

DRAINAGE AREA - 28.6 mi².

REVISIONS HISTORY - WDR CT-80-1: 1973-74, 1976-79 (P). WDR CT-83-1: Drainage area. WDR CT-06-01: 1979-80, 1982-83, 1996 (P).

SURFACE-WATER RECORDS

PERIOD OF RECORD - October 1972 to September 2017, December 2021 to current year.

GAGE - Water-stage recorder and crest-stage gage. Datum of gage is 15.89 ft above National Geodetic Vertical Datum of 1929. Satellite telemetry at station.

REMARKS - Flow completely regulated by Easton, Hemlock, and Samp Mortar Reservoirs, usable capacity 609,900,000 ft³, diversions into Hemlock Reservoir from Aspetuck Reservoir in the Aspetuck River Basin and by diversions from Hemlock and Easton Reservoirs for water supply of the cities of Bridgeport and Fairfield.

Water Year 2017: Records good except for periods of estimated discharges, which are fair.

Water Year 2016: Records good except for periods of estimated discharges, which are fair.

Water Year 2015: Records good except for periods of estimated discharges, which are fair.

Water Year 2014: Records good except for periods of estimated discharges, which are fair.

EXTREMES FOR PERIOD OF RECORD - Minimum daily mean flows of 0.00 ft³/s on Nov. 7, 17-18, 1979 were the result of regulation.