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USGS Daily Statistics for the Nation

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 04265432 GRASS RIVER AT CHASE MILLS NY


St. Lawrence County, New York
Hydrologic Unit Code 04150304
Latitude  44°50'47.5", Longitude  75°04'42.4" NAD83
Drainage area 598  square miles
Gage datum 225.59 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 2002-10-01 -> 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 1,350 848 925 2,200 1,840 723 874 501 574 714 1,710 1,800
2 1,390 853 894 2,530 2,090 708 809 469 551 825 1,630 2,020
3 1,320 813 922 2,730 1,900 754 724 419 438 737 1,490 2,090
4 1,170 791 930 2,670 1,850 700 721 455 365 597 1,370 1,930
5 1,110 798 960 2,770 1,870 689 677 470 349 508 1,240 1,700
6 1,160 783 977 2,770 1,790 688 581 460 487 460 1,170 1,480
7 1,130 712 1,050 2,730 1,540 886 518 404 455 538 1,130 1,440
8 1,070 681 1,190 2,760 1,330 909 487 362 395 737 1,070 1,360
9 1,160 652 1,220 2,730 1,230 790 534 366 416 864 999 1,250
10 1,260 644 1,290 2,610 1,190 880 603 400 573 855 940 1,140
11 1,230 680 1,510 2,610 1,220 1,010 591 401 644 768 896 1,170
12 1,370 689 1,800 2,650 1,140 1,030 641 414 593 619 907 1,270
13 1,600 676 2,010 2,670 981 1,000 669 427 495 529 1,030 1,240
14 1,610 664 1,980 2,770 872 1,030 583 397 414 626 1,120 1,110
15 1,470 655 1,850 2,810 952 940 532 420 385 710 1,070 1,050
16 1,290 663 1,680 2,660 1,200 846 479 445 376 938 1,070 1,070
17 1,130 725 1,610 2,540 1,590 758 554 524 502 1,100 1,170 1,080
18 974 764 1,670 2,280 1,610 701 587 475 789 1,150 1,220 1,040
19 878 795 1,750 1,980 1,350 619 616 425 715 1,070 1,180 1,110
20 846 820 1,670 1,880 1,130 551 680 415 522 973 1,160 1,150
21 824 851 1,640 1,910 993 630 633 414 445 983 1,120 1,090
22 777 871 1,510 1,840 892 650 597 441 402 1,080 1,080 1,100
23 739 812 1,430 1,750 897 624 489 534 415 1,180 1,150 1,200
24 750 762 1,490 1,800 948 646 458 558 396 1,250 1,130 1,330
25 798 814 1,510 1,720 978 812 699 461 353 1,200 1,130 1,420
26 972 970 1,550 1,570 975 932 641 365 323 1,150 1,220 1,580
27 992 1,050 1,680 1,550 935 884 520 315 333 1,200 1,250 1,550
28 950 986 1,960 1,610 935 747 537 285 380 1,320 1,310 1,490
29 924 920 1,990 1,670 1,010 774 541 294 402 1,380 1,540 1,510
30 839   2,050 1,610 932 867 493 363 489 1,550 1,660 1,390
31 776   2,120   804   471 470   1,670   1,350