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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 239.05 feet above NGVD29
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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 -> 2018-09-30)

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
1 238 230 287 523 296 272 135 80 65 106 140 230
2 255 253 277 499 289 268 113 72 63 106 140 240
3 261 315 308 518 286 254 105 71 57 96 154 231
4 262 304 323 488 303 232 92 65 64 93 153 217
5 258 264 331 495 281 237 96 70 63 85 158 233
6 238 239 384 490 274 274 98 72 63 87 155 245
7 253 242 420 467 273 249 101 77 100 96 151 263
8 267 268 367 425 266 235 95 85 87 90 154 254
9 259 241 386 403 269 211 94 78 85 107 173 243
10 259 237 369 400 283 200 86 86 75 104 177 241
11 247 223 372 394 290 183 88 101 77 98 179 245
12 238 232 431 380 280 182 84 97 93 94 178 279
13 222 231 410 407 268 194 87 106 80 94 191 268
14 239 251 400 395 262 213 96 100 70 105 191 249
15 264 260 406 376 253 191 91 83 81 211 190 249
16 252 283 406 426 246 175 85 81 83 161 172 235
17 225 265 421 449 255 174 76 73 86 139 185 244
18 225 259 453 393 268 170 72 88 107 130 179 265
19 245 262 454 370 266 175 77 225 115 126 160 243
20 252 264 441 368 254 162 81 162 122 147 171 238
21 250 264 441 343 242 152 92 106 231 165 190 267
22 250 269 518 341 228 142 94 88 180 135 187 280
23 250 261 480 345 215 141 94 79 119 121 198 248
24 271 275 429 341 232 148 126 74 103 131 190 243
25 367 311 416 343 244 167 109 66 92 142 196 237
26 378 334 395 327 247 152 91 74 91 140 216 246
27 352 304 422 329 235 133 85 75 121 130 222 257
28 345 284 430 322 217 134 86 98 114 138 215 234
29 284 267 440 318 205 128 92 88 119 142 264 228
30 255   481 298 223 135 91 71 114 137 242 237
31 235   506   243   81 71   140   235