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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
1 665 523 756 1,100 740 367 262 280 222 339 591 587
2 656 543 759 1,020 743 395 340 244 350 318 517 565
3 600 514 924 946 648 385 447 245 406 317 508 552
4 594 519 822 1,000 594 338 400 206 265 337 553 532
5 593 575 766 1,080 571 322 345 203 228 359 482 495
6 590 556 773 972 580 332 288 196 246 316 453 536
7 575 594 881 953 538 373 273 192 343 303 475 532
8 560 632 999 943 503 438 322 277 368 278 447 581
9 551 579 964 870 505 436 340 256 439 252 454 563
10 642 526 900 805 505 372 469 279 346 247 475 644
11 718 532 876 712 467 374 415 275 310 236 478 716
12 676 569 888 695 426 427 369 239 277 278 439 851
13 772 582 892 784 417 399 359 228 263 280 471 893
14 749 690 988 771 428 439 323 236 255 313 524 746
15 662 612 1,130 692 433 471 307 247 228 336 503 702
16 645 563 1,100 871 483 387 277 318 201 321 503 648
17 663 577 971 1,110 544 351 318 261 181 386 556 656
18 631 630 852 981 516 336 387 235 188 361 544 704
19 620 731 779 850 543 367 396 276 251 332 479 834
20 611 645 766 771 508 336 299 302 222 372 475 650
21 562 586 731 772 474 317 250 241 187 363 462 603
22 506 554 691 761 413 312 261 212 180 426 443 662
23 508 588 731 803 383 313 276 217 181 392 478 677
24 588 602 919 791 374 304 356 235 199 357 553 724
25 722 748 864 672 352 271 436 203 221 374 552 744
26 833 893 771 646 369 271 344 204 298 405 528 809
27 780 818 748 680 374 269 306 203 321 441 554 707
28 681 801 761 709 339 307 301 281 294 505 560 730
29 622 709 851 692 360 342 281 433 315 554 479 703
30 562   1,060 671 376 283 280 329 350 655 483 692
31 533   1,220   390   262 253   697   661