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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 01113895 BLACKSTONE R AT ROOSEVELT ST AT PAWTUCKET RI


Providence County, Rhode Island
Hydrologic Unit Code 01090003
Latitude  41°53'18", Longitude  71°22'55" NAD27
Drainage area 474  square miles
Gage datum 33.8 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 2003-10-01 -> 2024-09-30)

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 1,200 940 1,390 2,240 1,480 697 471 420 370 652 1,130 1,110
2 1,210 977 1,450 2,170 1,520 681 559 391 537 590 974 1,150
3 1,150 963 1,660 2,160 1,350 704 678 369 665 586 900 1,100
4 1,150 979 1,490 2,090 1,270 668 646 338 471 533 910 1,030
5 1,200 1,060 1,400 2,010 1,240 654 586 343 388 583 851 940
6 1,210 1,030 1,400 1,820 1,200 651 517 342 442 543 811 986
7 1,180 1,080 1,480 1,740 1,130 676 492 327 555 493 835 1,000
8 1,150 1,170 1,670 1,730 1,070 805 519 405 626 440 807 1,170
9 1,110 1,110 1,690 1,650 1,030 795 640 468 661 465 805 1,180
10 1,060 1,010 1,540 1,550 1,020 696 830 439 596 451 840 1,230
11 1,080 1,020 1,430 1,390 979 694 762 441 536 421 848 1,240
12 1,180 1,070 1,500 1,300 887 783 656 393 512 485 790 1,480
13 1,400 1,120 1,520 1,340 850 746 648 398 478 501 853 1,670
14 1,340 1,270 1,730 1,640 848 802 594 404 529 554 949 1,420
15 1,300 1,200 2,040 1,570 861 852 544 442 468 1,080 944 1,350
16 1,220 1,150 1,950 1,750 901 711 500 536 407 1,370 919 1,230
17 1,240 1,190 1,750 2,080 942 647 578 477 360 947 1,020 1,240
18 1,220 1,250 1,560 1,860 913 606 624 396 389 820 1,010 1,310
19 1,160 1,370 1,430 1,610 921 611 642 408 611 707 892 1,260
20 1,150 1,260 1,410 1,460 908 587 520 440 511 764 857 1,110
21 1,090 1,150 1,380 1,450 884 542 436 394 406 746 851 1,040
22 985 1,090 1,330 1,450 800 534 403 386 371 732 786 1,130
23 972 1,150 1,400 1,550 725 505 420 389 356 731 829 1,220
24 1,150 1,230 1,580 1,650 702 497 586 385 374 705 1,030 1,390
25 1,360 1,430 1,520 1,470 703 458 708 368 439 749 1,050 1,480
26 1,460 1,660 1,410 1,390 741 465 599 344 576 896 1,030 1,570
27 1,390 1,580 1,380 1,510 773 442 539 334 612 932 1,040 1,420
28 1,230 1,500 1,400 1,560 711 470 503 417 569 1,020 1,060 1,400
29 1,110 1,150 1,620 1,460 728 601 482 632 641 1,150 997 1,320
30 1,010   2,160 1,370 755 508 448 570 744 1,320 962 1,260
31 969   2,470   732   427 432   1,320   1,220