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USGS Daily Statistics for Connecticut

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ICE EFFECTS ON STREAMFLOW - During winter, ice formation may cause stage and discharge values to appear higher than expected. Ice effects may be minor (occurring only at night and early morning) with baseline flows obvious, or the effects may be major (stage constantly increases over several days or weeks) resulting in greatly erroneous discharge. Streamgages experiencing minor ice conditions will continue to display stage and discharge values to enable users to estimate the approximate base-line stage and discharge. Streamgages experiencing major ice conditions will have the discharge record temporarily disabled to prevent use of erroneous discharge values. The discharge record will resume when it is determined that ice conditions are no longer present. Daily mean discharges during periods of ice effect will be estimated after detailed data analysis.

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 237.93 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 -> 2021-09-30)

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
1 249 230 289 516 307 267 135 79 64 106 148 236
2 263 253 282 491 296 263 114 72 62 107 146 245
3 267 312 319 509 291 249 105 72 58 102 168 235
4 267 301 327 482 306 228 92 69 64 96 163 220
5 265 266 331 487 284 233 95 73 64 87 163 238
6 247 241 379 481 277 269 97 73 63 88 160 254
7 257 245 412 458 276 245 100 77 99 97 158 266
8 269 272 362 419 268 230 94 87 85 90 158 255
9 262 243 380 399 270 206 92 79 83 107 175 245
10 261 238 364 396 283 195 85 86 74 104 182 252
11 248 231 366 388 289 180 86 100 78 98 182 255
12 244 245 423 374 281 180 83 97 94 97 179 283
13 236 239 404 414 272 190 86 105 85 96 195 270
14 245 256 394 409 265 209 95 100 73 108 197 264
15 266 263 401 388 255 187 90 83 82 208 192 263
16 258 285 406 446 252 172 84 80 83 160 175 242
17 233 269 417 470 259 171 75 73 85 147 188 249
18 229 260 445 403 270 166 76 87 107 134 181 268
19 247 263 450 377 266 173 77 221 115 128 164 246
20 253 266 436 375 256 160 80 159 120 147 175 239
21 250 266 434 350 244 150 90 106 225 164 192 272
22 249 270 512 347 228 140 93 90 176 134 188 290
23 252 262 479 351 214 139 96 79 117 120 200 253
24 284 277 431 346 231 145 128 73 101 129 195 247
25 386 315 416 346 242 164 110 66 94 142 206 258
26 387 336 393 332 244 149 92 73 103 147 222 268
27 354 307 417 351 232 130 87 73 126 138 232 267
28 346 287 425 336 215 134 86 97 116 145 222 241
29 285 269 438 326 204 132 92 88 120 147 265 235
30 256   477 305 222 136 90 71 114 160 244 244
31 235   499   241   80 70   153   245