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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 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 33.66 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 -> 2021-09-30)

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 1,200 893 1,410 2,360 1,410 735 484 401 344 534 1,030 1,130
2 1,200 945 1,470 2,250 1,420 718 585 378 330 513 917 1,170
3 1,130 936 1,690 2,260 1,290 741 698 362 321 535 868 1,130
4 1,120 909 1,490 2,200 1,220 700 617 333 290 518 891 1,050
5 1,160 910 1,390 2,120 1,210 689 550 339 256 475 835 955
6 1,180 942 1,390 1,920 1,190 689 495 343 281 424 798 1,010
7 1,150 1,030 1,470 1,820 1,130 718 484 329 400 416 828 1,010
8 1,130 1,100 1,690 1,790 1,070 857 528 397 569 387 803 1,170
9 1,100 1,010 1,720 1,680 1,040 836 672 424 640 436 806 1,190
10 1,040 938 1,560 1,580 1,040 705 868 410 546 430 846 1,270
11 1,070 963 1,450 1,420 1,000 715 733 424 456 404 859 1,290
12 1,200 1,020 1,520 1,330 905 826 622 371 431 477 771 1,540
13 1,420 1,070 1,550 1,390 869 790 640 389 406 494 767 1,760
14 1,330 1,240 1,690 1,740 871 855 590 402 393 531 884 1,490
15 1,300 1,190 1,940 1,660 893 913 516 449 378 1,110 910 1,420
16 1,230 1,140 1,920 1,860 940 758 454 548 344 1,450 892 1,260
17 1,240 1,190 1,750 2,230 980 684 435 488 301 977 997 1,190
18 1,160 1,170 1,560 1,980 957 617 497 384 336 820 1,000 1,280
19 1,130 1,250 1,440 1,660 969 624 568 347 487 690 885 1,250
20 1,080 1,200 1,420 1,460 950 606 461 306 403 763 855 1,090
21 990 1,110 1,400 1,480 862 565 394 282 326 754 855 1,030
22 913 1,060 1,360 1,500 772 560 358 306 299 741 779 1,140
23 877 1,070 1,440 1,610 717 530 373 310 281 744 823 1,130
24 1,040 1,150 1,630 1,670 704 518 578 288 305 716 1,050 1,220
25 1,310 1,410 1,530 1,490 716 473 725 275 322 759 1,080 1,420
26 1,370 1,690 1,390 1,420 766 483 594 258 457 878 1,060 1,560
27 1,240 1,610 1,380 1,570 805 451 530 262 547 867 1,080 1,420
28 1,140 1,530 1,410 1,630 738 473 488 383 521 971 1,090 1,410
29 1,040 1,150 1,660 1,530 753 619 469 650 610 1,150 1,020 1,330
30 951   2,280 1,410 786 516 412 582 634 1,360 986 1,270
31 914   2,640   766   395 420   1,280   1,230