HOUSATONIC RIVER BASIN 01205700 EAST BRANCH NAUGATUCK RIVER AT TORRINGTON, CT LOCATION.--Lat 41o48'12", long 73o07'06", Litchfield County, Hydrologic Unit 01100005, on right bank, 250 ft upstream from Wall Street bridge in Torrington, 0.3 mi downstream from Troy Brook, and 0.6 mi upstream from confluence with West Branch Naugatuck River. DRAINAGE AREA.--13.6 mi2. PERIOD OF RECORD.--August 1956 to current year. REVISED RECORDS.--WSP 1621: 1958(P). WDR CT-83-1: Drainage area. GAGE.--Water-stage recorder. Datum of gage is 541.14 ft above sea level. Prior to June 4, 1982, nonrecording gage and crest-stage gage, June 5, 1982 to August 4, 1986, water-stage recorder at site 250 ft downstream at datum 1.88 ft lower. REMARKS.--Records good except for periods of estimated record, which are fair. Flow regulated by Lake Winchester and East Branch Detention Reservoir. EXTREMES OUTSIDE PERIOD OF RECORD.--Flood of Aug. 19, 1955, reached a discharge of 6,200 ft3/s, at site 2.5 mi upstream drainage area 9.30 mi2. DISCHARGE, CUBIC FEET PER SECOND, WATER YEAR OCTOBER 1995 TO SEPTEMBER 1996 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 2.1 34 39 e15 e32 e27 23 118 9.3 4.4 11 3.5 2 1.9 61 39 e14 e27 e25 85 71 8.6 3.6 13 3.0 3 1.8 48 37 e14 e24 e24 37 59 15 8.8 9.2 2.4 4 2.1 40 39 e14 e23 e23 29 59 17 12 8.9 2.2 5 21 34 37 e13 e21 e22 29 54 13 7.0 16 2.1 6 58 31 47 e13 e20 54 29 61 9.9 5.2 9.6 2.2 7 15 43 39 e13 e20 36 37 54 8.5 4.6 7.6 7.7 8 11 49 35 e13 e20 e27 45 48 7.6 3.6 6.2 9.5 9 9.2 35 e32 e12 28 e25 43 46 7.3 16 7.7 5.2 10 7.5 31 e30 e12 24 e23 57 50 13 7.0 5.7 8.3 11 6.7 56 e29 e12 22 e22 60 67 9.2 4.2 4.4 6.4 12 5.9 261 e28 e12 e20 24 66 103 7.7 3.3 3.9 4.3 13 5.0 152 e27 e11 e18 28 75 60 6.7 130 12 7.6 14 20 156 e26 e11 e17 35 103 50 6.1 91 6.5 14 15 39 167 e24 11 e16 46 64 44 5.4 33 4.8 6.6 16 14 131 e23 11 e15 47 195 61 4.7 34 4.3 4.5 17 11 72 e22 12 e15 32 163 63 5.1 15 8.2 16 18 18 55 e22 15 e14 30 140 56 8.8 12 4.3 145 19 19 70 e21 226 e14 32 98 53 13 16 3.6 60 20 24 56 e20 184 e14 111 67 44 15 17 3.2 21 21 140 48 e19 156 73 63 61 41 9.8 9.5 3.2 14 22 128 45 e19 98 94 50 57 37 7.2 7.4 2.9 26 23 53 46 e18 41 74 36 59 30 6.2 15 2.7 39 24 36 44 e18 119 93 30 69 19 5.5 12 15 19 25 30 42 e17 153 75 28 53 16 5.3 20 6.4 21 26 26 41 e17 72 54 33 52 16 4.4 50 4.4 14 27 30 40 e17 257 44 29 51 14 3.9 29 7.5 12 28 163 39 e16 208 e36 24 46 14 3.6 15 16 18 29 92 39 e16 171 e30 23 88 13 3.2 11 12 57 30 42 38 e15 141 --- 21 113 11 4.6 9.4 8.9 19 31 38 --- e15 52 --- 21 --- 10 --- 12 5.8 --- TOTAL 1070.2 2004 803 2106 977 1051 2094 1442 244.6 618.0 234.9 570.5 MEAN 34.5 66.8 25.9 67.9 33.7 33.9 69.8 46.5 8.15 19.9 7.58 19.0 MAX 163 261 47 257 94 111 195 118 17 130 16 145 MIN 1.8 31 15 11 14 21 23 10 3.2 3.3 2.7 2.1 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1957 - 1996, BY WATER YEAR (WY) MEAN 15.6 23.7 30.4 28.3 28.8 45.4 51.4 28.1 19.0 9.91 11.3 12.3 MAX 66.3 66.8 90.8 100 101 100 124 94.3 76.0 32.9 64.5 61.5 (WY) 1990 1996 1974 1978 1981 1980 1987 1989 1972 1972 1969 1975 MIN 2.62 3.43 4.01 3.00 7.44 19.3 12.1 8.10 3.92 2.12 2.90 2.17 (WY) 1979 1979 1981 1981 1980 1981 1985 1965 1957 1957 1968 1978 SUMMARY STATISTICS FOR 1995 CALENDAR YEAR FOR 1996 WATER YEAR WATER YEARS 1957 - 1996 ANNUAL TOTAL 8434.1 13215.2 ANNUAL MEAN 23.1 36.1 25.3 HIGHEST ANNUAL MEAN 39.5 1984 LOWEST ANNUAL MEAN 10.2 1965 HIGHEST DAILY MEAN 261 Nov 12 261 Nov 12 596 Dec 1 1985 LOWEST DAILY MEAN 1.0 Sep 12 1.8 Oct 3 .80 Oct 5 1957 ANNUAL SEVEN-DAY MINIMUM 1.1 Sep 6 3.0 Aug 31 1.1 Sep 30 1957 INSTANTANEOUS PEAK FLOW 786 Nov 12 1500 Aug 5 1969 INSTANTANEOUS PEAK STAGE 4.10 Nov 12 4.85 Aug 5 1969 INSTANTANEOUS LOW FLOW a1.8 Oct 3 .30 Aug 19 1963 10 PERCENT EXCEEDS 48 75 54 50 PERCENT EXCEEDS 15 22 14 90 PERCENT EXCEEDS 1.9 5.1 3.4 a Also occurred on Oct. 4. e Estimated.