QUINNIPIAC RIVER BASIN 01196500 QUINNIPIAC RIVER AT WALLINGFORD, CT LOCATION.--Lat 41o26'58", long 72o50'29", New Haven County, Hydrologic Unit 01100004, on right bank on Wilbur Cross Highway, 0.8 mi downstream from bridge on Quinnipiac Street in Wallingford, and 2 mi upstream from Wharton Brook. DRAINAGE AREA.--115 mi2. WATER-DISCHARGE RECORDS PERIOD OF RECORD.--October 1930 to current year. REVISED RECORDS.--WDR CT-83-1: Drainage area. GAGE.--Water-stage recorder and timber control. Datum of gage is 19.24 ft above sea level. Prior to Jan. 27, 1965, at datum 1.00 ft higher. REMARKS.--Records good except for periods of estimated record, which are poor. Satellite gage-height telemeter at this station. Flow regulated by Wolcott Reservoir, Broad Brook Reservoir, and by mills upstream. Diversion from Wolcott Reservoir for municipal supply of New Britain and diversion into the basin from Merimere and Elmere Reservoirs for municipal supply of Meriden. 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 45 167 172 e91 e440 255 169 528 143 94 145 66 2 44 285 185 e90 e370 e240 463 406 137 92 123 66 3 44 295 170 e89 e340 e230 352 330 180 167 108 65 4 e41 220 166 e88 e310 e220 234 326 301 186 101 64 5 e39 175 158 e87 e290 e210 207 300 214 117 97 64 6 e325 157 200 e86 e270 448 197 294 161 95 92 64 7 e200 195 186 e86 e260 522 200 294 143 86 88 71 8 e135 306 160 e86 e250 394 303 267 132 83 85 118 9 e103 235 e149 e86 348 e290 280 252 125 111 90 96 10 e83 177 e141 e86 363 e260 408 270 168 166 110 100 11 70 162 e135 e85 334 e250 509 301 165 126 94 85 12 66 734 e129 e85 322 e245 429 565 138 91 82 74 13 62 818 e125 e84 248 e290 449 411 128 528 140 74 14 76 479 e121 e84 e220 343 376 299 121 722 132 88 15 478 807 e119 e84 e205 376 312 264 113 345 99 81 16 281 678 e115 e84 e195 381 2440 287 106 198 87 73 17 134 413 e113 e83 e185 319 2410 375 104 159 83 143 18 98 328 e111 175 e180 279 1220 366 127 139 80 728 19 85 327 e109 833 e175 259 786 359 125 155 76 499 20 84 311 e108 1680 e200 364 618 284 146 151 73 198 21 418 272 e107 1010 494 357 521 263 129 118 73 133 22 629 248 e105 500 617 288 440 254 116 106 72 143 23 336 228 e102 358 563 249 408 226 108 132 71 213 24 188 214 e100 690 536 223 380 203 102 137 98 156 25 149 199 e99 1220 502 211 344 187 100 116 100 145 26 129 187 e98 747 375 201 335 175 99 250 82 120 27 119 181 e97 962 319 188 335 169 91 201 100 106 28 690 174 e96 2150 315 178 298 165 95 135 90 102 29 552 171 e95 1280 296 177 323 161 92 113 74 219 30 288 171 e94 763 --- 175 449 158 89 105 70 180 31 198 --- e93 601 --- 167 --- 153 --- 125 68 --- TOTAL 6189 9314 3958 14433 9522 8589 16195 8892 3998 5349 2883 4334 MEAN 200 310 128 466 328 277 540 287 133 173 93.0 144 MAX 690 818 200 2150 617 522 2440 565 301 722 145 728 MIN 39 157 93 83 175 167 169 153 89 83 68 64 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1931 - 1996, BY WATER YEAR (WY) MEAN 130 186 227 257 270 381 360 246 185 117 110 112 MAX 554 658 564 890 611 792 1169 756 920 357 411 563 (WY) 1956 1956 1984 1979 1970 1953 1983 1989 1982 1972 1955 1938 MIN 45.5 47.6 57.9 52.0 101 164 107 88.1 61.4 37.5 27.1 41.7 (WY) 1931 1966 1966 1966 1934 1985 1966 1941 1957 1966 1966 1986 SUMMARY STATISTICS FOR 1995 CALENDAR YEAR FOR 1996 WATER YEAR WATER YEARS 1931 - 1996 ANNUAL TOTAL 64324 93656 ANNUAL MEAN 176 256 215 HIGHEST ANNUAL MEAN 357 1984 LOWEST ANNUAL MEAN 84.6 1966 HIGHEST DAILY MEAN 950 Mar 9 2440 Apr 16 7210 Jun 6 1982 LOWEST DAILY MEAN 33 Aug 26 a39 Oct 5 9.0 Nov 2 1930 ANNUAL SEVEN-DAY MINIMUM 34 Sep 3 65 Aug 31 16 Aug 28 1966 INSTANTANEOUS PEAK FLOW 4530 Apr 16 8200 Jun 6 1982 INSTANTANEOUS PEAK STAGE 12.14 Apr 16 14.02 Jun 6 1982 INSTANTANEOUS LOW FLOW 55 Oct 14 8.0 Nov 2 1930 10 PERCENT EXCEEDS 327 499 417 50 PERCENT EXCEEDS 147 174 150 90 PERCENT EXCEEDS 47 84 60 a Estimated value due to missing record. e Estimated.