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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 -> 2020-09-30)

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
1 592 496 813 1,220 688 317 261 281 239 313 578 564
2 604 536 816 1,120 674 396 305 243 217 323 509 581
3 541 505 968 1,040 598 406 372 242 216 342 523 606
4 502 475 839 1,030 553 356 305 211 189 347 603 574
5 511 494 806 1,120 540 343 273 204 173 317 511 515
6 535 515 830 1,020 566 362 236 196 181 278 479 499
7 534 585 890 1,040 537 416 240 190 320 290 517 511
8 533 603 1,020 1,030 503 513 316 301 406 260 486 609
9 534 541 1,050 927 488 502 293 260 526 234 501 612
10 513 487 930 834 496 407 273 308 373 229 532 691
11 540 496 881 737 463 425 250 294 327 227 543 652
12 610 552 955 698 424 501 243 255 279 294 467 787
13 756 559 979 753 426 469 231 249 265 297 481 975
14 682 705 1,070 709 456 525 223 261 247 301 575 745
15 619 627 1,230 653 472 546 209 270 229 353 568 638
16 590 569 1,240 927 488 442 190 370 195 342 538 615
17 558 575 1,100 1,250 557 404 174 298 175 412 624 604
18 538 600 960 1,100 542 369 235 243 185 361 628 593
19 572 725 853 894 542 423 225 222 223 329 548 553
20 538 657 837 786 532 389 186 195 185 403 551 515
21 487 601 808 819 469 368 170 181 163 382 532 532
22 450 570 775 814 411 351 182 167 158 334 482 661
23 452 572 824 880 390 336 226 173 155 343 505 634
24 561 589 906 849 373 340 360 161 186 335 614 654
25 752 813 831 710 360 297 481 150 188 374 643 670
26 805 1,020 762 695 394 309 348 161 305 400 618 626
27 691 910 781 739 406 278 306 168 352 421 651 621
28 627 868 789 771 352 319 289 295 322 516 665 709
29 570 741 815 761 324 327 269 534 340 603 554 682
30 514   1,100 713 327 281 251 383 317 733 549 654
31 498   1,380   319   246 279   721   578