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USGS Surface-Water Daily Statistics for Connecticut

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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 01119500 WILLIMANTIC RIVER NEAR COVENTRY, CT


Tolland County, Connecticut
Hydrologic Unit Code 01100002
Latitude  41°45'02", Longitude  72°15'58" NAD27
Drainage area 121  square miles
Gage datum 238.04 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 1931-10-01 -> 2024-09-30)

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
1 252 235 288 514 312 268 139 83 67 117 152 235
2 265 257 282 491 299 262 126 75 98 113 149 243
3 268 313 320 506 293 247 122 75 76 107 170 234
4 269 307 328 478 309 227 118 71 75 103 165 220
5 267 273 331 482 286 234 117 75 71 99 163 237
6 249 245 378 476 278 266 107 75 70 97 160 251
7 259 248 412 454 275 241 109 79 104 103 158 267
8 270 275 363 420 267 227 102 90 89 97 158 255
9 263 247 379 399 269 205 115 81 90 111 174 244
10 288 241 363 396 284 194 127 87 82 107 181 251
11 273 234 365 386 289 178 105 101 84 101 180 270
12 264 247 421 372 279 177 97 97 99 99 180 291
13 254 242 403 408 269 187 99 106 93 98 196 273
14 258 257 401 402 262 206 109 100 81 111 197 265
15 272 263 408 382 252 186 104 84 86 207 192 263
16 263 284 409 442 249 170 100 82 87 160 176 244
17 238 269 417 466 256 169 101 74 88 148 188 253
18 234 266 445 400 266 164 112 94 110 135 181 287
19 250 267 448 379 262 170 103 231 119 128 164 270
20 260 267 434 376 252 157 97 171 123 147 174 249
21 254 266 432 349 245 148 103 112 223 167 190 277
22 251 270 507 344 227 138 104 96 175 138 189 292
23 257 269 474 355 213 136 104 91 119 122 200 261
24 289 281 429 351 229 143 132 85 105 131 195 254
25 393 316 417 346 238 162 113 73 101 144 205 261
26 402 336 394 331 240 147 98 78 108 152 219 271
27 366 306 416 348 229 129 92 77 128 143 229 269
28 353 287 423 334 212 133 95 99 118 148 220 246
29 295 269 435 323 210 132 98 90 129 149 262 241
30 264   473 304 225 135 103 73 133 163 241 248
31 242   493   246   88 72   159   248