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USGS Daily Statistics for Massachusetts

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ICE EFFECTS ON STREAMFLOW

The formation of ice on rivers can cause discharge values to appear unusually high. Display of these erroneous discharge data may result in improper assessment of flow conditions and misuse of the data. For this reason, display of discharge values for streams significantly affected by ice may be disabled from view. Display of discharge data will resume when ice conditions are no longer present. Discharge values for streams minimally affected by ice will continue to be displayed. Flows for streams with these conditions appear to increase during the night and decrease to near-base-line conditions around midday. To estimate the correct discharge for these streams, use the flow rate that corresponds to the bottom of the discharge curve, rather than the peak that corresponds to the top of the curve. Note that this method of estimation is possible only when no surface runoff is occurring. Daily mean discharges for periods of both significant and minimal ice-effect will be estimated and published in the Annual Water-Data Report for the water year in which they occurred.


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 01111212 BLACKSTONE RIVER, RT 122 BRIDGE NEAR UXBRIDGE, MA


Worcester County, Massachusetts
Hydrologic Unit Code 01090003
Latitude  42°03'17", Longitude  71°37'01" NAD27
Drainage area 244  square miles
Gage datum 198.12 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 2005-10-01 -> 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
1 662 487 789 1,150 718 374 268 267 217 289 551 642
2 652 524 792 1,060 720 416 364 232 197 293 498 623
3 593 495 914 985 629 408 445 238 200 308 505 608
4 583 466 798 1,010 583 356 369 196 175 311 571 563
5 590 481 764 1,080 569 340 312 189 159 284 486 525
6 588 503 780 979 586 354 263 181 166 250 457 581
7 572 569 826 975 548 405 260 175 286 260 487 563
8 562 597 933 959 509 483 331 271 361 236 458 620
9 555 534 956 875 495 470 362 235 464 216 471 609
10 530 486 854 815 506 384 509 276 332 218 496 713
11 552 499 811 721 476 397 386 265 297 212 505 703
12 624 546 877 676 436 468 354 230 252 270 436 781
13 743 557 903 730 430 437 361 225 238 277 450 915
14 670 695 985 762 450 486 314 241 223 305 530 777
15 608 616 1,120 690 460 517 283 252 206 334 522 748
16 613 565 1,120 921 488 423 242 333 177 320 520 672
17 632 582 1,000 1,210 543 381 218 269 159 398 583 636
18 581 594 875 1,070 522 346 324 220 167 351 580 619
19 593 701 802 889 517 390 354 203 204 318 506 575
20 555 638 794 784 504 358 264 179 179 376 509 527
21 503 582 759 801 447 339 225 165 152 361 494 531
22 467 553 722 805 393 323 220 159 146 408 448 630
23 458 557 762 850 373 314 250 164 143 378 480 605
24 548 573 876 813 357 314 360 169 171 344 589 617
25 713 770 823 690 344 277 461 147 172 366 600 707
26 792 956 743 675 374 284 344 151 272 382 575 816
27 689 872 745 720 387 257 304 157 314 398 608 709
28 624 850 745 761 339 305 276 274 290 495 613 747
29 567 718 796 746 358 341 258 475 303 572 512 709
30 513   1,060 712 376 284 240 347 286 698 523 703
31 495   1,290   387   236 253   682   665