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USGS Surface-Water Daily Statistics for the Nation

The statistics generated from this site are based on approved daily-mean data and may not match those published by the USGS in official publications. The user is responsible for assessment and use of statistics from this site. For more details on why the statistics may not match, click here.

USGS 01196500 QUINNIPIAC RIVER AT WALLINGFORD, CT


New Haven County, Connecticut
Hydrologic Unit Code 01100004
Latitude  41°27'00.95", Longitude  72°50'28.59" NAD83
Drainage area 115  square miles
Gage datum 18.17 feet above NAVD88
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00060, Discharge, cubic feet per second,
Day of
month		 Mean of daily mean values for each day for water year of record in, ft3/s   (Calculation Period 1930-10-01 -> 2023-09-30)

Calculation period restricted by USGS staff due to special conditions at/near site
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
1 261 229 304 451 282 267 157 116 87 130 161 236
2 270 261 310 434 282 280 134 107 123 130 161 243
3 264 323 312 428 273 260 135 105 114 123 173 231
4 254 311 330 427 285 229 131 102 109 129 167 220
5 243 271 326 426 270 238 129 105 97 118 168 230
6 238 238 348 410 266 314 130 104 108 113 165 247
7 250 249 420 380 266 275 125 111 122 112 158 256
8 259 270 383 360 247 241 122 106 112 113 175 244
9 248 243 376 344 245 207 135 100 113 138 204 243
10 237 224 356 372 255 202 130 113 104 132 193 241
11 232 243 355 364 277 189 122 128 102 118 193 239
12 230 252 382 334 273 196 112 126 108 116 188 265
13 234 248 394 363 274 198 117 129 120 129 196 267
14 232 262 393 364 261 205 122 122 109 141 194 263
15 254 267 389 351 246 189 116 111 121 164 187 262
16 247 274 386 416 251 174 118 102 123 158 180 237
17 224 260 389 442 260 181 114 106 128 157 198 239
18 226 268 385 362 244 182 111 118 139 142 191 246
19 247 266 382 331 247 184 111 143 133 150 163 228
20 240 261 389 325 239 163 110 143 130 195 189 218
21 243 269 393 323 230 159 109 121 142 197 205 270
22 243 272 450 317 215 155 111 120 140 153 189 289
23 250 276 448 329 209 154 122 119 131 141 212 244
24 292 297 389 336 241 157 155 109 125 163 202 251
25 381 332 370 325 245 159 123 101 123 177 204 263
26 385 346 362 315 228 142 111 98 141 173 210 262
27 327 322 362 336 225 134 109 97 143 162 230 253
28 320 304 373 314 215 144 116 123 149 171 225 242
29 283 277 382 292 219 146 119 120 144 180 240 234
30 244   394 270 237 154 114 100 132 178 240 239
31 227   429   244   113 89   167   249