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 1996 TO SEPTEMBER 1997 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 42 52 152 45 71 44 193 50 e15 e6.0 7.0 11 2 41 47 530 39 63 44 149 65 e15 e10 6.5 11 3 42 44 317 e36 58 46 134 116 e17 20 6.4 9.8 4 39 38 210 e34 54 43 119 145 e22 9.4 28 8.6 5 38 34 167 e33 186 31 101 100 e16 6.6 65 8.1 6 38 34 248 40 148 51 91 90 e14 6.0 21 8.0 7 38 36 289 39 103 41 86 84 e12 19 15 7.9 8 72 52 406 40 80 29 78 62 e11 19 12 7.7 9 91 221 256 30 66 28 61 59 e10 16 10 7.6 10 40 201 194 e28 57 35 58 61 e9.5 20 9.0 7.7 11 31 152 168 e26 57 48 46 53 e9.0 12 8.4 19 12 28 115 172 e25 57 70 61 43 e8.5 9.5 7.5 32 13 27 85 160 e23 60 30 125 39 e25 8.0 8.5 14 14 26 76 151 e22 85 61 94 36 e58 7.1 9.1 11 15 24 67 143 22 98 118 71 31 e25 7.4 7.2 9.8 16 24 60 126 72 85 67 61 31 e13 20 7.3 8.9 17 24 57 157 63 75 55 58 28 e10 12 10 8.0 18 23 53 155 39 66 50 91 25 e8.0 9.3 26 7.9 19 145 53 151 30 63 45 102 e30 e13 8.1 14 7.3 20 329 51 144 26 63 46 77 e48 e19 6.2 11 7.3 21 104 46 116 23 57 46 64 e34 e16 6.4 131 5.8 22 71 46 101 22 57 51 53 e25 e14 20 44 6.0 23 70 41 85 25 58 46 47 e21 e12 11 26 6.8 24 66 34 81 23 51 37 43 e19 e13 18 20 6.4 25 60 33 92 190 51 32 39 e32 e11 60 16 6.2 26 58 215 70 147 45 47 37 e48 e9.5 19 14 6.3 27 60 172 61 87 46 42 33 e30 e8.5 13 12 5.9 28 87 120 55 158 48 35 87 e21 e8.0 11 14 6.2 29 91 94 55 126 --- 34 78 e17 e7.5 9.1 15 14 30 85 80 59 86 --- 41 55 e16 e6.5 7.8 13 9.3 31 72 --- 50 67 --- 147 --- e15 --- 7.5 11 --- TOTAL 1986 2409 5121 1666 2008 1540 2392 1474 436.0 414.4 604.9 285.5 MEAN 64.1 80.3 165 53.7 71.7 49.7 79.7 47.5 14.5 13.4 19.5 9.52 MAX 329 221 530 190 186 147 193 145 58 60 131 32 MIN 23 33 50 22 45 28 33 15 6.5 6.0 6.4 5.8 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1973 - 1997, BY WATER YEAR (WY) MEAN 18.9 28.5 46.9 50.1 47.0 70.5 81.8 54.6 32.3 14.9 13.5 13.0 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 1996 CALENDAR YEAR FOR 1997 WATER YEAR WATER YEARS 1973 - 1997 ANNUAL TOTAL 24982.2 20336.8 ANNUAL MEAN 68.3 55.7 39.3 HIGHEST ANNUAL MEAN 62.4 1984 LOWEST ANNUAL MEAN 12.0 1985 HIGHEST DAILY MEAN 646 Apr 16 530 Dec 2 1300 Jun 6 1982 LOWEST DAILY MEAN 7.2 Jan 14 5.8 Sep 21 .00 Nov 7 1979 ANNUAL SEVEN-DAY MINIMUM 7.3 Jan 10 6.2 Sep 21 .71 Jul 16 1987 INSTANTANEOUS PEAK FLOW 889 Dec 2 1800 Apr 10 1980 INSTANTANEOUS PEAK STAGE 5.44 Dec 2 7.15 Apr 10 1980 INSTANTANEOUS LOW FLOW a5.1 Jul 20 .00 Nov 7 1979 10 PERCENT EXCEEDS 142 132 87 50 PERCENT EXCEEDS 46 39 21 90 PERCENT EXCEEDS 19 8.0 3.5 a Also occurred on Sep. 21.