QUINNIPIAC RIVER BASIN 01196500 QUINNIPIAC RIVER AT WALLINGFORD, CT LOCATION.--Lat 4126'58", long 7250'29", 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.--No estimated daily discharges. Records good. 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 1997 TO SEPTEMBER 1998 DAILY MEAN VALUES DAY OCT NOV DEC JAN FEB MAR APR MAY JUN JUL AUG SEP 1 74 356 170 240 240 391 310 216 556 1230 91 62 2 64 606 161 200 224 402 502 411 296 521 79 59 3 61 356 141 188 215 379 430 398 496 264 73 58 4 61 179 141 203 215 254 326 276 332 211 71 57 5 64 132 141 231 309 196 283 256 212 195 69 56 6 65 112 138 225 276 244 258 475 146 174 68 52 7 59 102 130 250 224 233 244 664 158 158 66 70 8 54 183 124 637 203 235 234 447 154 154 63 110 9 54 527 120 549 190 1750 282 611 149 156 62 77 10 57 558 119 375 182 2530 1070 1230 143 145 62 63 11 54 283 126 292 180 1260 713 1620 137 132 70 58 12 53 181 130 249 781 697 417 1210 156 123 82 56 13 53 149 132 233 577 537 339 764 321 118 66 54 14 54 166 126 224 356 517 303 540 443 112 63 52 15 56 189 119 201 265 520 280 468 369 107 61 53 16 57 189 113 274 227 445 263 398 348 104 60 55 17 58 169 114 251 226 394 299 372 236 106 79 53 18 56 150 118 236 1150 385 311 342 199 128 88 51 19 56 143 116 208 965 1030 261 263 175 104 97 51 20 56 138 116 197 558 1180 568 227 171 97 78 50 21 53 138 116 186 437 754 429 223 196 104 67 50 22 53 309 110 172 360 620 297 232 166 113 62 115 23 52 314 195 258 316 543 290 235 150 133 59 193 24 53 229 187 1650 826 516 315 223 147 156 59 103 25 105 184 324 997 793 455 257 241 143 109 58 70 26 107 163 326 553 520 409 304 163 132 91 324 62 27 145 166 254 397 400 380 395 172 127 86 168 80 28 121 152 210 335 353 355 289 179 119 83 95 112 29 87 142 192 302 --- 328 241 181 115 95 76 79 30 72 139 583 281 --- 302 225 192 779 94 67 63 31 68 --- 418 262 --- 286 --- 256 --- 101 64 --- TOTAL 2082 6804 5510 10856 11568 18527 10735 13485 7271 5504 2547 2124 MEAN 67.2 227 178 350 413 598 358 435 242 178 82.2 70.8 MAX 145 606 583 1650 1150 2530 1070 1620 779 1230 324 193 MIN 52 102 110 172 180 196 225 163 115 83 58 50 STATISTICS OF MONTHLY MEAN DATA FOR WATER YEARS 1931 - 1998, BY WATER YEAR (WY) MEAN 133 189 233 260 272 383 361 249 185 118 110 111 MAX 554 658 657 890 611 792 1169 756 920 357 411 563 (WY) 1956 1956 1997 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 1997 CALENDAR YEAR FOR 1998 WATER YEAR WATER YEARS 1931 - 1998 ANNUAL TOTAL 77262 97013 ANNUAL MEAN 212 266 217 HIGHEST ANNUAL MEAN 357 1984 LOWEST ANNUAL MEAN 84.6 1966 HIGHEST DAILY MEAN 1270 Jan 25 2530 Mar 10 7210 Jun 6 1982 LOWEST DAILY MEAN 52 Oct 23 50 Sep 20 9.0 Nov 2 1930 ANNUAL SEVEN-DAY MINIMUM 54 Oct 8 52 Sep 15 16 Aug 28 1966 INSTANTANEOUS PEAK FLOW 3020 Mar 9 8200 Jun 6 1982 INSTANTANEOUS PEAK STAGE 10.13 Mar 9 14.02 Jun 6 1982 INSTANTANEOUS LOW FLOW a46 Sep 20 8.0 Nov 2 1930 10 PERCENT EXCEEDS 404 541 420 50 PERCENT EXCEEDS 177 187 150 90 PERCENT EXCEEDS 62 59 60 a Also occurred on Sept. 21.