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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 -> 2025-09-30)

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
1 670 536 756 1,100 740 367 262 280 222 339 615 611
2 660 560 759 1,020 743 395 340 244 350 318 536 589
3 608 531 924 946 648 385 447 245 406 331 525 575
4 606 537 822 1,000 594 338 400 206 265 353 572 554
5 608 575 766 1,080 571 322 345 203 228 375 498 514
6 606 556 773 972 580 332 288 196 246 331 469 556
7 593 594 881 953 538 373 273 192 343 316 492 553
8 579 632 999 943 503 438 322 277 368 288 463 606
9 570 579 964 870 505 436 340 256 439 262 470 587
10 667 526 900 805 505 372 469 279 346 256 491 669
11 747 532 876 712 467 374 415 275 310 246 495 737
12 702 569 888 695 426 427 369 239 277 289 454 833
13 804 582 892 784 417 399 359 228 263 292 489 903
14 780 690 988 771 428 439 323 236 255 326 545 763
15 688 612 1,130 692 433 471 307 247 228 349 524 723
16 671 563 1,100 871 483 387 277 318 201 333 524 668
17 690 577 971 1,110 544 351 318 261 181 402 579 675
18 657 630 852 981 516 336 387 235 188 374 567 726
19 644 731 779 850 543 367 396 276 251 344 499 857
20 633 645 766 771 508 336 299 302 222 386 495 666
21 583 586 731 772 474 317 250 241 187 376 480 619
22 525 554 691 761 413 312 261 212 180 443 450 684
23 528 588 731 803 383 313 276 217 181 404 488 701
24 612 602 919 791 374 304 356 235 199 367 569 751
25 754 748 864 672 352 271 436 203 221 385 572 773
26 870 893 771 646 369 271 344 204 298 418 548 843
27 815 818 748 680 374 269 306 203 321 457 576 735
28 711 801 761 709 339 307 301 281 294 525 583 760
29 649 709 851 692 360 342 281 433 315 575 494 731
30 585   1,060 671 376 283 280 329 350 682 501 715
31 555   1,220   390   262 253   726   675