MILL RIVER BASIN 01208925 MILL RIVER NEAR FAIRFIELD, CT LOCATION.--Lat 4109'55", long 7316'14", Fairfield County, Hydrologic Unit 01100006, on right bank just downstream from bridge on Duck Farm Road, 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. PERIOD OF RECORD.--October 1972 to current year. REVISED RECORDS.--WDR CT-80-1: 1973-74, 1976-79 (P). WDR CT-83-1: Drainage area. GAGE.--Water-stage recorder. Datum of gage is 15.89 ft above sea level. REMARKS.--Records good except those for periods of estimated record, which are poor. 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 by the Bridgeport Hydraulic Company for water supply of the cities of Bridgeport and Fairfield. DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1997 TO SEPTEMBER 1998 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 7.1 31 18 e50 e37 e60 e40 e32 58 e57 14 9.0 2 6.1 25 16 e40 e36 e55 e55 100 29 e40 12 10 3 5.9 20 15 e38 e35 e48 e71 77 41 e29 12 14 4 5.8 20 15 e39 e34 e44 e58 68 31 e22 11 7.0 5 5.9 22 16 e39 e50 e39 e47 65 27 e24 11 5.2 6 5.5 36 18 e39 e47 e36 e43 76 23 e22 11 4.7 7 3.8 34 16 e38 e43 e33 e42 100 21 e15 11 8.5 8 7.0 54 15 e65 e38 e36 e35 84 20 e17 10 11 9 5.2 67 14 e60 e34 e90 e32 119 20 e19 11 6.6 10 5.2 53 15 e53 e31 e214 e60 215 22 15 10 5.2 11 3.7 37 17 e44 e28 e170 e118 269 18 14 12 4.8 12 3.3 22 17 e37 e80 e118 e70 194 50 13 12 4.7 13 5.0 18 17 e34 e65 e86 e53 140 106 13 10 4.5 14 8.3 21 17 e31 e55 e75 e44 111 95 13 9.5 4.5 15 13 29 15 e28 e43 e67 e40 91 72 12 10 4.8 16 15 23 14 e50 e36 e61 e37 75 84 12 10 4.7 17 19 19 14 e46 e33 e59 e37 65 61 12 14 4.2 18 28 18 e14 e40 e80 e57 e39 60 81 12 14 4.2 19 32 17 e16 e36 e120 e90 e37 52 66 11 13 4.3 20 30 16 e14 e33 e90 e129 e80 44 48 12 11 5.0 21 28 15 e14 e31 e75 e105 e65 40 37 12 11 4.5 22 26 36 e12 e28 e60 e90 e57 40 29 14 11 5.7 23 26 29 e19 e38 e50 e81 e52 32 e27 18 11 e18 24 25 20 e25 e100 e70 e74 e49 26 e28 20 11 e11 25 25 18 e48 e141 e96 e68 e48 29 e27 16 10 4.2 26 22 17 e45 e90 e90 e58 e43 28 e24 15 23 4.6 27 27 18 e40 e65 e75 e56 e49 26 e21 13 13 8.6 28 21 13 e35 e53 e64 e51 e46 33 e19 12 10 13 29 20 18 e36 e44 --- e47 e39 39 e15 12 9.8 5.5 30 21 16 e90 e41 --- e46 e35 41 e29 12 9.7 4.8 31 23 --- e80 e39 --- e41 --- 25 --- 17 9.3 --- TOTAL 478.8 782 757 1510 1595 2284 1521 2396 1229 545 357.3 206.8 MEAN 15.4 26.1 24.4 48.7 57.0 73.7 50.7 77.3 41.0 17.6 11.5 6.89 MAX 32 67 90 141 120 214 118 269 106 57 23 18 MIN 3.3 13 12 28 28 33 32 25 15 11 9.3 4.2 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1973 - 1998, BY WATER YEAR (WY) MEAN 18.8 28.4 46.0 50.1 47.4 70.7 80.6 55.5 32.7 15.0 13.4 12.8 MAX 64.1 80.3 165 176 103 168 276 216 195 71.7 63.6 42.2 (WY) 1997 1997 1997 1979 1973 1983 1983 1989 1982 1984 1992 1994 MIN 2.98 8.40 7.04 3.13 9.99 19.9 12.1 10.2 2.74 .93 1.72 2.16 (WY) 1985 1985 1983 1981 1980 1985 1985 1986 1987 1987 1987 1983 e Estimated. SUMMARY STATISTICS FOR 1997 CALENDAR YEAR FOR 1998 WATER YEAR WATER YEARS 1973 - 1998 ANNUAL TOTAL 12838.6 13661.9 ANNUAL MEAN 35.2 37.4 39.2 HIGHEST ANNUAL MEAN 62.4 1984 LOWEST ANNUAL MEAN 12.0 1985 HIGHEST DAILY MEAN 193 Apr 1 269 May 11 1300 Jun 6 1982 LOWEST DAILY MEAN 3.3 Oct 12 3.3 Oct 12 .00 Nov 7 1979 ANNUAL SEVEN-DAY MINIMUM 4.7 Oct 7 4.5 Sep 13 .71 Jul 16 1987 INSTANTANEOUS PEAK FLOW 342 May 11 1800 Apr 10 1980 INSTANTANEOUS PEAK STAGE 3.82 May 11 7.15 Apr 10 1980 INSTANTANEOUS LOW FLOW 2.9 Oct 11 .00 Nov 7 1979 10 PERCENT EXCEEDS 78 80 87 50 PERCENT EXCEEDS 23 28 21 90 PERCENT EXCEEDS 7.5 8.6 3.6