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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 33.66 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 1,160 903 1,410 2,430 1,430 642 480 384 344 534 1,030 1,040
2 1,160 948 1,470 2,300 1,450 659 524 362 330 513 920 1,100
3 1,080 938 1,710 2,330 1,320 708 570 348 321 535 872 1,110
4 1,080 912 1,510 2,280 1,230 680 503 319 290 518 903 1,030
5 1,130 916 1,400 2,200 1,200 669 458 309 256 475 846 919
6 1,170 951 1,410 1,990 1,180 677 428 304 281 424 812 876
7 1,130 1,050 1,500 1,890 1,130 717 428 300 400 416 845 909
8 1,120 1,120 1,730 1,860 1,080 868 466 382 569 387 820 1,120
9 1,090 1,030 1,780 1,740 1,050 848 513 413 640 436 825 1,160
10 1,040 952 1,610 1,630 1,030 712 492 410 546 430 870 1,260
11 1,070 980 1,490 1,470 982 727 458 424 456 404 883 1,290
12 1,210 1,040 1,560 1,380 893 845 425 371 431 477 791 1,560
13 1,450 1,090 1,590 1,440 864 806 407 389 406 494 786 1,790
14 1,350 1,280 1,750 1,810 872 871 386 402 393 531 909 1,500
15 1,320 1,220 2,010 1,730 901 908 362 449 378 1,110 940 1,420
16 1,200 1,160 1,990 1,910 955 743 329 548 344 1,450 913 1,270
17 1,120 1,180 1,810 2,250 999 681 317 488 301 977 1,020 1,190
18 1,090 1,180 1,610 2,000 979 618 350 384 336 820 1,040 1,300
19 1,090 1,270 1,460 1,670 995 631 364 347 487 690 912 1,260
20 1,050 1,220 1,440 1,480 977 615 305 306 403 763 883 1,100
21 968 1,130 1,430 1,510 885 572 274 282 326 754 884 1,040
22 893 1,070 1,390 1,530 792 565 271 306 299 741 805 1,150
23 859 1,080 1,480 1,660 736 525 310 310 281 744 825 1,140
24 1,030 1,160 1,690 1,720 723 516 538 288 305 716 1,030 1,240
25 1,330 1,420 1,580 1,530 736 473 702 275 322 759 1,090 1,340
26 1,400 1,710 1,430 1,450 790 487 566 258 457 878 1,080 1,280
27 1,260 1,630 1,420 1,610 828 455 506 262 547 867 1,090 1,240
28 1,150 1,540 1,450 1,680 751 478 457 383 521 971 1,110 1,320
29 1,050 1,150 1,690 1,570 712 635 438 650 610 1,150 1,050 1,270
30 961   2,340 1,440 702 526 383 582 634 1,360 1,000 1,220
31 922   2,750   672   369 420   1,280   1,190