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USGS 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


South Central Connecticut Planning Region County, Connecticut
Hydrologic Unit Code 011000040105
Latitude  41°27'00.95", Longitude  72°50'28.59" NAD83
Drainage area 115.0  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 -> 2025-09-30)

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
1 265 232 303 447 292 267 161 118 87 139 160 235
2 271 262 309 430 288 277 138 108 123 134 160 240
3 265 321 315 426 275 257 136 106 113 125 172 229
4 255 309 333 431 286 227 133 103 109 131 165 219
5 243 269 328 427 273 236 130 106 97 120 166 229
6 239 237 360 408 283 309 136 104 108 114 164 244
7 249 248 436 378 281 271 129 113 122 114 157 255
8 258 268 391 358 255 240 123 108 113 116 173 242
9 248 242 377 342 253 206 135 101 115 139 201 241
10 263 223 367 368 267 201 131 115 107 133 190 240
11 254 241 363 360 284 188 123 128 106 119 191 256
12 238 250 383 339 275 195 112 127 112 117 188 276
13 248 246 392 367 274 196 117 129 123 129 195 269
14 245 260 399 363 261 203 123 122 117 140 192 262
15 258 265 395 349 248 187 119 112 124 163 185 261
16 250 273 386 411 257 173 121 103 124 157 179 237
17 227 261 391 435 263 179 119 106 129 156 196 243
18 228 267 385 360 245 180 115 129 140 142 189 264
19 248 263 380 329 247 182 113 166 136 149 161 251
20 244 259 386 323 241 161 111 156 131 194 186 226
21 246 266 390 321 236 158 110 127 142 199 202 272
22 243 269 444 314 220 154 112 123 140 158 191 288
23 253 273 448 334 214 154 122 121 131 142 213 249
24 295 294 399 345 245 157 154 110 126 163 200 256
25 382 328 373 326 246 158 122 102 129 177 201 264
26 397 342 362 314 227 141 110 100 151 172 207 262
27 337 319 360 335 225 135 109 99 149 161 227 252
28 327 303 374 313 217 144 116 123 151 169 224 250
29 291 287 383 291 219 145 120 121 149 178 237 245
30 249   391 272 238 154 116 101 146 178 238 246
31 231   424   246   113 90   167   252