CONNECTICUT RIVER BASIN 01187300 HUBBARD RIVER NEAR WEST HARTLAND, CT LOCATION.--Lat 42×02'14", long 72×56'22", Hartford County, Hydrologic Unit 01080207, on left bank at Massachusetts-Connecticut Stateline, 800 ft upstream from bridge on State Route 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 those for periods with ice effect, which are poor. 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 1998 TO SEPTEMBER 1999 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 3.2 5.4 17 9.2 31 154 e50 13 15 4.9 .61 2.0 2 8.9 5.0 14 e8.5 96 98 e42 12 13 7.6 .56 1.6 3 8.1 4.7 12 e8.0 213 82 e37 11 11 7.8 .52 1.4 4 7.4 4.4 12 32 123 626 e32 19 9.8 25 .48 1.3 5 6.8 4.2 11 25 95 156 e29 59 7.9 18 .48 1.2 6 6.2 4.2 10 16 70 89 e27 49 7.1 8.4 .45 2.7 7 5.7 4.3 9.7 11 56 e60 e25 36 6.5 6.4 .43 5.3 8 21 4.5 9.8 7.6 47 e50 e23 33 5.9 4.4 .59 4.4 9 39 4.4 14 23 41 e40 e21 40 5.3 3.4 .62 3.8 10 45 4.1 12 92 37 e37 e20 30 4.9 3.5 .56 51 11 41 20 11 69 35 e34 21 22 4.4 3.0 .55 32 12 20 19 9.6 42 39 e32 24 18 4.2 2.6 .56 12 13 13 12 9.1 29 57 e30 22 15 4.0 2.3 .49 6.8 14 62 11 9.1 19 42 e29 19 13 5.0 2.2 2.2 4.7 15 55 16 8.8 21 e33 36 17 12 5.7 2.2 2.3 4.4 16 26 16 8.8 105 e30 34 17 10 4.6 2.0 1.4 513 17 19 15 8.8 118 e28 41 24 9.2 3.8 1.7 1.4 578 18 13 18 8.2 149 73 81 22 8.6 4.2 1.4 .98 107 19 9.9 15 7.9 186 92 90 19 153 3.5 1.9 .80 54 20 7.7 14 7.7 101 62 64 17 388 3.0 2.1 .73 34 21 6.4 16 7.8 69 47 55 16 103 2.7 1.5 11 38 22 5.8 14 18 70 33 945 17 61 2.4 1.3 14 66 23 5.3 12 18 69 e26 224 31 55 2.2 1.2 7.0 56 24 5.0 11 14 284 e23 128 40 155 2.1 1.2 2.9 34 25 4.7 10 11 208 e21 100 27 150 2.0 1.1 2.0 24 26 4.4 38 8.7 e90 e20 82 22 78 1.8 .97 1.8 22 27 4.2 69 e8.4 e42 e19 71 19 54 1.5 .87 2.6 19 28 4.3 37 e8.0 e32 28 103 16 39 1.7 .78 12 14 29 8.2 25 e7.7 e25 --- 97 15 29 9.5 .69 6.2 12 30 7.1 20 8.7 e24 --- 79 14 23 9.9 .65 3.4 61 31 5.9 --- 10 e19 --- e62 --- 19 --- .65 2.5 --- TOTAL 479.2 453.2 330.8 2003.3 1517 3809 725 1716.8 164.6 121.71 82.11 1766.6 MEAN 15.5 15.1 10.7 64.6 54.2 123 24.2 55.4 5.49 3.93 2.65 58.9 MAX 62 69 18 284 213 945 50 388 15 25 14 578 MIN 3.2 4.1 7.7 7.6 19 29 14 8.6 1.5 .65 .43 1.2 CFSM .78 .76 .54 3.25 2.72 6.17 1.21 2.78 .28 .20 .13 2.96 IN. .90 .85 .62 3.74 2.84 7.12 1.36 3.21 .31 .23 .15 3.30 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1939 - 1999, BY WATER YEAR (WY) MEAN 21.0 41.8 45.9 40.9 41.1 81.8 95.5 50.1 27.8 11.8 13.8 13.7 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 24.2 12.2 3.18 1.12 .57 .81 (WY) 1965 1965 1947 1981 1980 1941 1999 1980 1957 1971 1957 1953 e Estimated. CONNECTICUT RIVER BASIN 01187300 HUBBARD RIVER NEAR WEST HARTLAND, CT—Continued SUMMARY STATISTICS FOR 1998 CALENDAR YEAR FOR 1999 WATER YEAR WATER YEARS 1939 - 1999 ANNUAL TOTAL 16090.55 13169.32 ANNUAL MEAN 44.1 36.1 40.4 HIGHEST ANNUAL MEAN 64.3 1955 LOWEST ANNUAL MEAN 16.2 1965 HIGHEST DAILY MEAN 673 May 10 945 Mar 22 5000 Aug 19 1955 LOWEST DAILY MEAN .59 Sep 14 .43 Aug 7 .19 Sep 12 1995 ANNUAL SEVEN-DAY MINIMUM .81 Sep 9 .50 Aug 2 .21 Aug 15 1957 INSTANTANEOUS PEAK FLOW 1900 Sep 16 a10500 Aug 19 1955 INSTANTANEOUS PEAK STAGE 7.82 Sep 16 b16.50 Aug 19 1955 INSTANTANEOUS LOW FLOW d.42 Aug 6 c0.00 ANNUAL RUNOFF (CFSM) 2.22 1.81 2.03 ANNUAL RUNOFF (INCHES) 30.08 24.62 27.56 10 PERCENT EXCEEDS 102 81 93 50 PERCENT EXCEEDS 20 14 19 90 PERCENT EXCEEDS 2.0 1.7 2.3 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 gage well. c Occurred frequently during low flow periods. d Also occurred Aug. 7, 8.