268 Potowomut River Basin
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268 POTOWOMUT RIVER BASIN 01117000 HUNT RIVER NEAR EAST GREENWICH, RI LOCATION.--Lat 41°38’28", long 71°26’45", Washington County, Hydrologic Unit 01090004, on right bank 45 ft upstream from Old Forge Dam in North Kingstown, 1.5 mi south of East Greenwich, and 2.5 mi upstream from mouth. DRAINAGE AREA.--22.9 mi2. PERIOD OF RECORD.--Discharge: August 1940 to current year. Prior to October 1977, published as "Potowomut River." Water-quality records: Water years 1977–81. REVISED RECORDS.--WSP 1621: 1957–58; 1995. GAGE.--Water-stage recorder. Datum of gage is 5.42 ft above sea level. REMARKS.--Records good. Flow affected by diversions for supply of East Greenwich, North Kingstown, Warwick, and Quon- set Point (formerly U.S. Naval establishments). AVERAGE DISCHARGE.--58 years, 46.9 ft3/s. EXTREMES FOR PERIOD OF RECORD.--Maximum discharge, 1,020 ft3/s, June 6, 1982, gage height, 3.73 ft, from rating curve extended above 440 ft3/s; maximum gage height of 6.78 ft, Aug. 31, 1954 (backwater from hurricane tidal wave); no flow at times in water years 1948, 1960, 1971, 1975–77, 1983, 1986–87, caused by closing of gate at Old Forge Dam. EXTREMES OUTSIDE PERIOD OF RECORD.--Maximum stage since at least 1915, about 8.5 ft Sept. 21, 1938 (backwater from hurricane tidal wave). EXTREMES FOR CURRENT YEAR.--Maximum discharge, 582 ft3/s, Mar. 10, gage height, 2.94 ft; minimum, 3.3 ft3/s, Oct. 11. 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 7.9 15 25 43 73 143 80 74 90 163 21 9.6 2 5.3 53 26 35 67 131 228 137 68 108 17 9.1 3 4.7 41 21 33 64 112 182 140 66 73 14 8.8 4 5.7 25 19 33 62 99 131 108 53 58 13 8.7 5 6.2 17 19 31 80 91 107 115 43 75 12 7.8 6 6.1 12 20 30 98 86 95 128 40 76 11 7.4 7 4.8 10 21 41 80 79 86 134 41 57 11 9.6 8 4.0 15 19 91 69 77 82 113 47 49 10 22 9 3.7 61 15 117 62 206 80 118 44 46 10 20 10 3.8 54 14 105 58 490 136 211 39 43 9.9 12 11 3.7 32 18 73 56 282 125 271 35 39 9.1 8.9 12 5.1 22 17 56 130 181 99 221 34 36 10 8.4 13 5.8 17 17 52 149 142 84 162 146 33 10 8.2 14 6.1 26 18 57 105 126 76 133 354 30 9.8 7.5 15 6.3 48 17 50 79 124 73 118 267 28 9.2 7.2 16 5.5 37 15 106 66 113 72 107 238 27 8.9 7.1 17 4.7 27 14 106 64 103 120 99 161 26 9.8 6.8 18 4.9 21 15 77 308 98 234 92 116 26 13 6.1 19 6.1 19 15 62 294 192 158 83 120 23 14 6.2 20 6.6 17 15 56 185 274 134 76 186 22 11 6.7 21 5.4 15 16 52 136 194 117 70 136 21 9.4 6.8 22 5.1 29 15 48 114 167 100 66 99 20 9.1 39 23 4.9 36 23 54 102 146 97 64 85 18 8.8 26 24 5.0 29 32 357 178 131 131 59 78 19 8.7 15 25 12 23 43 312 228 119 114 56 70 16 8.2 11 26 20 21 57 188 166 109 100 55 61 16 17 9.4 27 25 22 46 132 128 102 108 50 57 15 19 9.2 28 17 20 40 108 111 96 93 47 55 14 14 8.9 29 11 18 33 96 --- 92 83 44 51 14 14 7.7 30 8.1 18 75 87 --- 87 76 46 80 16 13 6.9 31 7.2 --- 65 80 --- 81 --- 48 --- 20 11 --- TOTAL 227.7 800 805 2768 3312 4473 3401 3245 2960 1227 365.9 328.0 MEAN 7.35 26.7 26.0 89.3 118 144 113 105 98.7 39.6 11.8 10.9 MAX 25 61 75 357 308 490 234 271 354 163 21 39 MIN 3.7 10 14 30 56 77 72 44 34 14 8.2 6.1 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1940 - 1998, BY WATER YEAR (WY) MEAN 18.8 37.0 54.3 63.8 71.2 88.6 84.0 61.4 37.7 18.3 15.5 13.8 MAX 70.1 108 151 186 122 169 230 114 182 56.3 65.1 73.6 (WY) 1956 1956 1987 1979 1970 1983 1983 1989 1982 1984 1946 1954 MIN 1.76 8.05 5.53 7.19 17.5 30.0 25.2 23.8 10.8 5.23 3.06 1.59 (WY) 1969 1950 1966 1966 1944 1981 1966 1992 1957 1994 1965 1968 POTOWOMUT RIVER BASIN 269 01117000 HUNT RIVER NEAR EAST GREENWICH, RI--Continued SUMMARY STATISTICS FOR 1997 CALENDAR YEAR FOR 1998 WATER YEAR WATER YEARS 1940 - 1998 ANNUAL TOTAL 15460.3 23912.6 ANNUAL MEAN 42.4 65.5 46.9 HIGHEST ANNUAL MEAN 81.6 1984 LOWEST ANNUAL MEAN 17.7 1966 HIGHEST DAILY MEAN 215 Apr 1 490 Mar 10 861 Jun 6 1982 LOWEST DAILY MEAN 3.7 Oct 9 3.7 Oct 9 .00 Oct 25 1947 ANNUAL SEVEN-DAY MINIMUM 4.4 Oct 7 4.4 Oct 7 .10 Sep 13 1943 INSTANTANEOUS PEAK FLOW 582 Mar 10 1020 Jun 6 1982 INSTANTANEOUS PEAK STAGE 2.94 Mar 10 6.78 Aug 31 1954 INSTANTANEOUS LOW FLOW 3.3 Oct 11 .00 Oct 24 1947 10 PERCENT EXCEEDS 94 141 102 50 PERCENT EXCEEDS 27 46 34 90 PERCENT EXCEEDS 5.6 7.9 6.1 HUNT RIVER NEAR EAST GREENWICH, RI 01117000 1,000 700 500 400 300 200 100 70 50 40 30 20 10 7 5 DAILY MEAN DISCHARGE 4 DISCHARGE, IN CUBIC FEET PER SECOND 3 2 1 O N D J F M A M J J AS 1998 WATER YEAR 270 PAWCATUCK RIVER BASIN 01117350 CHIPUXET RIVER AT WEST KINGSTON, RI LOCATION.--Lat 41°28’56", long 71°33’06", Washington County, Hydrologic Unit 01090005, on right bank at West Kingston, at downstream side of bridge on State Highway 138, 1.5 mi west of Kingston, and 3.1 mi upstream from Worden Pond. DRAINAGE AREA.--9.99 mi2. PERIOD OF RECORD.--Discharge: February 1958 to July 1960 in Rhode Island Water Resources Board Geologic Bulletin 13. September 1973 to current year. Water-quality records: Water years 1974–83. GAGE.--Water-stage recorder. Datum of gage is 89.80 ft above sea level (Rhode Island State Board of Public Roads bench- mark). REMARKS.--Records fair except those for daily discharges from Oct. 1 to Dec. 29 (flow affected by beaver dam), which are poor. Diversion upstream for supply of University of Rhode Island. AVERAGE DISCHARGE.--26 years (water years 1959, 1974–98), 21.5 ft3/s. EXTREMES FOR PERIOD OF RECORD SINCE 1973.--Maximum discharge, about 250 ft3/s, June 6, 1982; minimum, 0.47 ft3/s, Nov. 6, 7, 1994. Instantaneous maximum and minimum discharges not available prior to Sept. 14, 1973. EXTREMES FOR CURRENT YEAR.--Maximum discharge, 124 ft3/s, June 17, gage height, 6.83 ft; minimum, 0.74 ft3/s, Oct. 23, 24, 25. 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 2.2 3.8 11 16 35 54 39 43 30 56 15 12 2 1.2 11 11 14 34 55 68 49 31 66 15 10 3 1.2 15 10 13 32 51 84 55 32 58 14 10 4 1.2 14 9.8 13 32 47 68 54 30 49 14 9.8 5 2.7 10 9.5 13 37 44 56 52 29 43 12 9.3 6 4.9 7.7 9.2 12 39 41 48 52 26 39 11 8.9 7 3.3 6.6 8.6 15 37 39 44 52 25 36 11 9.7 8 3.0 7.4 8.1 25 35 39 42 50 25 34 11 11 9 2.2 14 7.6 32 32 55 41 51 24 32 11 11 10 1.7 16 7.7 34 29 99 48 60 23 31 10 10 11 1.5 15 9.0 30 28 100 50 78 22 29 10 9.7 12 1.4 12 8.5 25 37 77 51 85 21 28 10 10 13 4.8 9.9 8.4 22 46 61 48 75 30 26 9.7 9.3 14 11 12 8.2 23 43 54 42 65 51 24 8.3 8.0 15 8.8 15 7.7 21 36 52 40 58 74 23 8.6 7.9 16 7.6 15 7.9 31 31 48 37 53 111 22 8.8 7.8 17 6.4 13 8.2 36 30 45 43 49 114 22 10 7.4 18 5.1 11 7.9 33 67 43 69 47 92 21 12 6.7 19 3.2 9.2 7.4 29 109 55 72 44 78 21 13 6.2 20 2.5 8.0 7.1 26 89 80 64 42 77 20 12 7.6 21 1.5 7.3 7.4 24 68 80 59 40 70 19 12 8.9 22 .94 10 7.9 22 55 70 51 38 60 18 11 11 23 .81 12 8.8 24 48 62 49 36 53 18 11 11 24 .80 13 7.1 66 61 56 53 34 48 18 10 8.4 25 1.0 11 10 102 80 51 55 33 44 17 9.3 7.1 26 1.0 11 14 84 74 47 52 34 41 16 12 5.8 27 1.6 11 15 62 60 45 51 32 39 15 14 5.4 28 1.3 11 16 50 52 43 52 31 37 14 13 4.0 29 1.4 11 15 43 --- 42 51 29 36 14 15 2.7 30 1.5 11 18 39 --- 40 46 28 39 14 14 2.2 31 1.6 --- 19 37 --- 38 --- 27 --- 15 13 --- TOTAL 89.35 333.9 311.0 1016 1356 1713 1573 1476 1412 858 360.7 248.8 MEAN 2.88 11.1 10.0 32.8 48.4 55.3 52.4 47.6 47.1 27.7 11.6 8.29 MAX 11 16 19 102 109 100 84 85 114 66 15 12 MIN .80 3.8 7.1 12 28 38 37 27 21 14 8.3 2.2 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1958 - 1998, BY WATER YEAR (WY) MEAN 9.68 15.2 22.8 28.4 29.7 36.0 35.6 27.7 21.4 13.6 10.8 9.29 MAX 29.1 43.4 59.4 64.2 48.4 64.0 85.4 47.6 70.4 35.3 24.5 32.4 (WY) 1990 1990 1987 1979 1998 1983 1983 1998 1982 1982 1982 1985 MIN 2.88 4.32 5.11 3.54 10.4 9.14 12.7 11.5 7.89 3.94 1.65 1.50 (WY) 1998 1995 1981 1981 1981 1981 1985 1981 1976 1976 1993 1993 PAWCATUCK RIVER BASIN 271 01117350 CHIPUXET RIVER AT WEST KINGSTON, RI--Continued SUMMARY STATISTICS FOR 1997 CALENDAR YEAR FOR 1998 WATER YEAR WATER YEARS 1958 - 1998 ANNUAL TOTAL 7092.21 10747.75 ANNUAL MEAN 19.4 29.4 21.5 HIGHEST ANNUAL MEAN 32.8 1984 LOWEST ANNUAL MEAN 6.89 1981 HIGHEST DAILY MEAN 85 Apr 2 114 Jun 17 235 Jun 6 1982 LOWEST DAILY MEAN .80 Oct 24 .80 Oct 24 .51 Nov 6 1994 ANNUAL SEVEN-DAY MINIMUM 1.1 Oct 22 1.1 Oct 22 .57 Nov 3 1994 INSTANTANEOUS PEAK FLOW 124 Jun 17 250 Jun 6 1982 INSTANTANEOUS PEAK STAGE 6.83 Jun 17 6.92 Apr 1 1997 INSTANTANEOUS LOW FLOW .74 Oct 23 .47 Nov 6 1994 10 PERCENT EXCEEDS 39 61 43 50 PERCENT EXCEEDS 15 23 17 90 PERCENT EXCEEDS 1.5 6.7 5.6 CHIPUXET RIVER AT WEST KINGSTON, RI 01117350 1,000 700 500 400 300 200 100 70 50 40 30 20 10 7 5 4 3 2 1 0.7 DAILY MEAN DISCHARGE DISCHARGE, IN CUBIC FEET PER SECOND 0.5 0.4 0.3 0.2 0.1 O N D J F M A M J J AS 1998 WATER YEAR 272 PAWCATUCK RIVER BASIN 01117420 USQUEPAUG RIVER NEAR USQUEPAUG, RI LOCATION.--Lat 41°28’36", long 71°36’19", Washington County, Hydrologic Unit 01090005, on left bank at upstream side of Heaton Orchard Bridge on State Highway 2 in South Kingstown, 1.2 mi upstream from Chickasheen Brook, 1.8 mi south of Usquepaug, and 2.6 mi west of West Kingston.