CONNECTICUT RIVER BASIN 01187300 HUBBARD RIVER NEAR WEST HARTLAND, CT LOCATION.--Lat 4202'14", long 7256'22", Hartford County, Hydrologic Unit 01080207, on left bank at Massachusetts- Connecticut Stateline, 800 ft upstream from bridge on State Highway 20, 0.5 mi upstream from confluence with Valley Brook, and 2.6 mi northeast of West Hartland. DRAINAGE AREA.--19.9 mi2. PERIOD OF RECORD.--January 1938 to September 1955, September 1956 to current year. Monthly discharge only for periods January 1938 to September 1955, October 1956 to September 1960, published in WSP 1721. Daily figures for the periods January 1938 to September 1955, September 1956 to September 1960, available upon request. REVISED RECORDS.--WDR-CT-83-1: Drainage area. GAGE.--Water-stage recorder and stepped sharp-crested weir. Datum of gage is 594.57 ft above sea level. Prior to October 1, 1981, at datum 0.05 ft higher. REMARKS.--Records good except for periods of estimated record, which are fair. COOPERATION.--Gage-height record prior to May 28, 1982, furnished by Water Bureau, Metropolitan District Commission, Hartford, Connecticut. 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 8.1 97 129 e98 e29 135 71 22 63 113 3.5 .70 2 5.5 207 74 e88 e28 111 126 120 30 54 2.7 1.0 3 4.5 114 51 e82 e28 94 106 86 77 32 2.4 2.6 4 5.1 71 44 e105 27 82 72 59 39 21 2.2 2.4 5 7.0 65 44 e162 27 74 57 55 24 31 2.1 1.6 6 5.5 45 40 e140 e25 66 46 133 18 23 2.1 1.1 7 4.2 35 35 e175 e23 60 39 158 14 17 2.2 1.1 8 3.4 68 31 e260 e22 59 34 88 13 25 2.0 1.2 9 3.0 309 e28 e190 e21 601 40 86 11 47 1.7 1.1 10 2.8 177 e26 e132 e21 408 126 673 9.5 28 1.5 1.1 11 2.6 87 27 e94 21 e120 83 551 8.4 18 1.8 .85 12 2.5 66 25 e72 145 e78 63 349 12 14 1.9 .77 13 2.3 53 e22 e63 126 e66 51 130 68 11 1.9 .65 14 2.2 51 e20 e52 e71 62 44 87 214 9.0 1.4 .59 15 2.4 49 e19 e46 e47 55 36 65 167 7.2 1.4 .63 16 2.8 42 e19 49 e38 e49 31 50 460 6.8 1.3 3.3 17 2.9 37 e19 e42 e34 e45 36 48 162 12 1.4 3.8 18 2.7 34 e18 e38 124 44 54 47 85 10 2.1 2.2 19 2.7 31 e19 e35 120 120 39 35 56 6.9 2.9 1.8 20 9.5 28 e20 e33 98 124 116 28 54 5.8 2.1 1.3 21 6.3 26 e20 e31 85 100 71 23 62 5.6 1.5 1.1 22 4.6 64 e17 e30 71 75 50 20 42 4.7 1.3 8.1 23 3.9 67 e16 30 64 e61 41 17 32 4.5 1.2 7.4 24 3.4 52 e15 102 73 e58 45 15 28 5.8 1.2 3.6 25 4.7 41 e34 87 96 e55 36 14 22 4.5 1.1 2.5 26 7.0 36 e69 e55 83 e68 34 14 18 3.7 1.2 2.3 27 22 54 e71 e44 81 e85 38 12 21 3.1 1.2 2.3 28 19 44 e50 e40 79 e102 31 11 18 2.9 1.0 2.6 29 12 38 e41 37 --- 131 27 10 16 2.7 .85 2.3 30 8.9 49 e109 34 --- 93 24 13 95 2.8 .77 2.1 31 7.1 --- e115 32 --- 72 --- 12 --- 3.7 .74 --- TOTAL 180.6 2137 1267 2478 1707 3353 1667 3031 1938.9 535.7 52.66 64.09 MEAN 5.83 71.2 40.9 79.9 61.0 108 55.6 97.8 64.6 17.3 1.70 2.14 MAX 22 309 129 260 145 601 126 673 460 113 3.5 8.1 MIN 2.2 26 15 30 21 44 24 10 8.4 2.7 .74 .59 CFSM .29 3.58 2.05 4.02 3.06 5.44 2.79 4.91 3.25 .87 .09 .11 IN. .34 3.99 2.37 4.63 3.19 6.27 3.12 5.67 3.62 1.00 .10 .12 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1939 - 1998, BY WATER YEAR (WY) MEAN 21.1 42.2 46.5 40.5 40.9 81.1 96.7 50.0 28.2 11.9 14.0 12.9 MAX 101 103 132 117 165 193 230 145 124 61.8 270 88.7 (WY) 1997 1996 1974 1996 1981 1953 1993 1989 1972 1969 1955 1975 MIN 1.41 4.86 8.25 3.47 6.64 22.0 26.4 12.2 3.18 1.12 .57 .81 (WY) 1965 1965 1947 1981 1980 1941 1985 1980 1957 1971 1957 1953 e Estimated. SUMMARY STATISTICS FOR 1997 CALENDAR YEAR FOR 1998 WATER YEAR WATER YEARS 1939 - 1998 ANNUAL TOTAL 13363.21 18411.95 ANNUAL MEAN 36.6 50.4 40.4 HIGHEST ANNUAL MEAN 64.3 1955 LOWEST ANNUAL MEAN 16.2 1965 HIGHEST DAILY MEAN 314 Apr 7 673 May 10 5000 Aug 19 1955 LOWEST DAILY MEAN .91 Aug 2 .59 Sep 14 .19 Sep 12 1995 ANNUAL SEVEN-DAY MINIMUM 1.2 Jul 29 .81 Sep 9 .21 Aug 15 1957 INSTANTANEOUS PEAK FLOW 1080 May 10 a10500 Aug 19 1955 INSTANTANEOUS PEAK STAGE 5.92 May 10 b16.50 Aug 19 1955 INSTANTANEOUS LOW FLOW d.56 Sep 13 c0.00 ANNUAL RUNOFF (CFSM) 1.84 2.53 2.03 ANNUAL RUNOFF (INCHES) 24.98 34.42 27.61 10 PERCENT EXCEEDS 87 114 94 50 PERCENT EXCEEDS 25 31 19 90 PERCENT EXCEEDS 2.6 2.0 2.4 a From rating curve extended above 300 ft3/s, on basis of contracted-opening measurement of peak flow. b From high water marks in the well. c Occurred frequently during low flow periods. d Also occurred on Sept. 14 and 15.