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USGS 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 -> 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
1 253 234 289 513 312 267 139 83 67 116 151 233
2 265 256 283 489 298 261 125 75 98 112 148 241
3 267 311 325 505 292 246 122 74 76 106 168 231
4 268 305 330 484 308 226 117 71 74 102 163 218
5 265 271 331 485 285 232 117 75 70 98 162 235
6 247 244 389 478 278 264 108 75 70 96 159 249
7 258 246 428 454 275 240 110 81 103 102 156 264
8 268 273 372 420 268 226 102 91 88 96 156 253
9 261 245 383 399 270 204 115 82 89 110 172 241
10 286 239 374 394 284 193 126 88 81 106 179 249
11 271 232 372 385 288 177 105 101 83 100 179 271
12 262 245 423 379 278 176 97 98 98 98 178 294
13 253 240 403 413 268 186 99 106 93 97 194 274
14 256 255 401 404 261 205 108 100 81 110 195 264
15 270 261 407 383 251 185 104 84 85 205 190 261
16 261 283 407 440 253 169 100 82 86 159 174 242
17 236 269 419 463 258 168 101 74 87 147 187 252
18 232 265 445 399 267 163 111 94 109 134 179 286
19 248 265 446 379 265 169 103 231 118 127 162 270
20 258 265 432 375 253 156 97 172 122 146 173 249
21 252 264 429 348 245 147 102 112 220 165 189 276
22 250 267 502 345 227 138 103 96 173 137 188 290
23 255 267 475 355 213 139 103 91 118 121 199 259
24 286 279 439 351 229 144 131 85 104 130 193 252
25 389 313 422 346 238 162 113 73 100 143 203 259
26 399 333 396 330 239 146 98 77 107 151 217 269
27 363 305 415 347 228 129 92 77 127 142 227 266
28 350 288 426 333 212 133 94 99 117 147 218 244
29 293 291 440 323 210 131 99 90 128 147 260 239
30 262   473 303 225 135 104 73 132 161 239 248
31 240   492   245   88 71   157   248