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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 -> 2019-09-30)

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 1,220 688 317 263 289 245 333 577 584
2 604 536 816 1,120 674 396 312 249 220 343 507 599
3 541 505 968 1,040 598 406 387 249 194 363 528 627
4 502 475 839 1,030 553 356 316 217 180 369 617 592
5 511 494 806 1,120 540 340 282 209 169 336 519 529
6 535 515 830 1,020 566 365 242 203 181 294 485 513
7 534 585 890 1,040 537 426 230 195 331 306 526 526
8 533 603 1,020 1,030 503 533 320 249 425 272 488 634
9 534 541 1,050 927 488 522 299 229 556 243 509 633
10 513 487 930 834 496 421 281 300 393 238 544 691
11 540 496 881 737 463 427 257 296 344 237 558 652
12 610 552 955 698 424 511 238 258 293 308 479 787
13 756 559 979 753 426 479 228 254 277 311 495 975
14 682 705 1,070 709 456 534 222 269 259 314 598 745
15 619 627 1,230 653 472 565 209 280 237 369 591 638
16 590 569 1,240 927 488 455 192 389 202 356 560 615
17 558 575 1,100 1,250 557 408 174 312 180 337 654 604
18 538 600 960 1,100 542 374 227 253 192 306 658 593
19 572 725 853 894 542 434 223 232 235 307 571 553
20 538 657 837 786 532 396 185 202 193 399 572 515
21 487 601 808 819 469 362 169 186 169 383 554 532
22 450 570 775 814 411 348 183 170 164 335 501 661
23 452 572 824 880 390 335 204 178 161 338 528 634
24 561 589 906 849 373 343 342 165 195 331 640 654
25 752 813 831 710 360 299 487 154 197 378 624 670
26 805 1,020 762 695 394 311 353 166 323 407 621 626
27 691 910 781 739 406 281 311 175 373 424 667 621
28 627 868 789 771 352 327 294 311 342 478 683 709
29 570 741 815 761 324 337 275 531 361 597 567 682
30 514   1,100 713 327 286 256 387 337 750 565 654
31 498   1,380   319   252 284   739   578