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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 01122000 NATCHAUG RIVER AT WILLIMANTIC, CT


Windham County, Connecticut
Hydrologic Unit Code 01100002
Latitude  41°43'12.36", Longitude  72°11'44.07" NAD83
Drainage area 174  square miles
Gage datum 149.30 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 -> 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
1 356 405 485 661 450 297 155 98 103 153 215 364
2 376 392 460 713 416 303 151 89 91 138 210 359
3 364 380 443 727 396 322 148 85 80 129 215 356
4 372 379 448 700 434 323 145 84 76 121 223 332
5 349 383 487 689 412 310 137 77 80 104 203 331
6 351 376 529 728 382 279 128 71 77 106 219 337
7 389 396 521 758 372 256 118 77 84 119 230 365
8 409 451 515 705 374 273 106 88 95 118 246 377
9 391 385 569 668 375 306 110 91 107 116 239 358
10 407 348 569 626 387 319 109 94 105 127 249 349
11 388 329 536 579 390 309 115 109 92 129 270 361
12 348 339 637 558 385 298 110 103 82 137 251 363
13 324 340 629 600 393 283 110 107 101 137 261 356
14 333 346 611 589 384 268 110 115 131 124 292 380
15 375 393 637 583 368 291 118 111 142 117 291 382
16 397 433 647 570 350 275 105 109 131 123 272 384
17 367 420 671 583 347 249 94 120 117 162 265 392
18 337 411 660 596 363 271 87 121 129 212 261 388
19 338 400 647 587 355 266 86 104 148 223 244 376
20 337 391 624 540 342 264 88 91 177 220 246 372
21 337 381 663 522 336 218 98 88 331 234 268 379
22 337 381 654 502 318 192 127 83 210 206 277 360
23 370 388 699 475 303 179 136 93 142 178 279 345
24 381 384 710 461 291 174 189 104 117 184 275 336
25 422 417 659 496 303 188 150 97 111 188 284 336
26 469 438 608 513 311 174 126 104 123 193 313 349
27 470 473 604 500 303 170 109 106 145 184 316 385
28 459 478 625 485 311 172 97 119 155 192 311 389
29 457 381 624 482 289 163 99 117 147 192 391 398
30 446   596 466 277 157 99 122 153 214 373 395
31 427   606   270   98 112   220   385