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USGS Surface-Water 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 -> 2022-09-30)

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
1 654 479 788 1,120 718 374 268 276 230 296 631 631
2 648 513 792 1,030 720 416 364 242 385 297 547 612
3 594 487 909 962 629 408 445 245 454 310 536 598
4 580 507 797 981 583 356 369 204 289 343 591 553
5 586 557 759 1,040 569 340 312 203 244 372 507 517
6 587 539 773 950 586 354 263 198 233 321 476 571
7 572 586 829 947 548 405 260 188 334 307 502 559
8 560 632 935 959 509 483 331 275 391 272 473 610
9 552 576 951 875 495 470 362 240 480 246 483 597
10 532 517 851 815 506 384 509 277 377 243 507 694
11 549 526 808 721 476 397 386 267 332 234 514 685
12 614 570 867 676 436 468 354 234 278 286 455 769
13 725 588 897 730 430 437 361 227 260 290 497 891
14 656 711 969 762 450 486 314 242 241 314 564 758
15 595 628 1,090 690 460 517 283 251 222 341 544 729
16 598 575 1,090 921 488 423 242 326 198 328 536 662
17 631 592 973 1,210 543 381 218 266 181 407 591 629
18 606 653 854 1,070 522 346 324 219 186 362 584 611
19 600 770 783 889 517 390 354 227 218 329 512 584
20 559 676 778 784 504 358 264 279 195 382 512 538
21 506 610 744 801 447 339 225 224 166 367 498 536
22 467 575 707 805 393 323 220 199 160 411 457 626
23 457 609 742 850 373 314 250 208 161 383 488 605
24 540 621 854 813 357 314 360 236 188 350 587 611
25 693 790 829 690 344 277 461 194 194 374 595 695
26 767 957 753 675 374 284 344 183 285 410 572 805
27 669 874 745 720 387 257 304 180 321 450 601 704
28 606 850 739 761 339 305 298 284 298 532 605 737
29 553 718 781 746 358 341 276 471 317 593 511 700
30 504   1,030 712 376 284 258 350 297 706 520 694
31 488   1,240   387   250 261   752   657