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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 06101500 Marias River near Chester MT


Liberty County, Montana
Hydrologic Unit Code 10030203
Latitude  48°18'21.46", Longitude 111°04'49.90" NAD83
Drainage area 4,944  square miles
Contributing drainage area 4,397  square miles
Gage datum 2,814.03 feet above NGVD29
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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 1920-10-01 -> 2019-09-30)

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
1 445 432 521 687 893 1,410 1,420 967 813 795 621 505
2 445 435 525 697 893 1,430 1,360 967 819 785 616 497
3 443 436 527 701 911 1,460 1,330 963 832 777 611 488
4 440 436 529 733 955 1,480 1,320 930 836 784 608 477
5 436 438 529 732 974 1,470 1,300 902 826 777 605 470
6 435 436 526 727 985 1,490 1,270 906 816 766 608 467
7 435 438 528 721 1,000 1,530 1,240 940 812 760 606 466
8 432 440 532 718 1,020 1,550 1,230 950 816 756 606 464
9 431 448 530 717 1,030 1,560 1,220 933 823 754 602 460
10 429 451 530 719 1,050 1,630 1,200 941 823 759 600 457
11 429 452 534 720 1,090 1,690 1,180 966 824 765 600 458
12 427 454 533 726 1,120 1,700 1,170 966 826 761 601 459
13 427 459 528 724 1,140 1,740 1,160 956 824 754 602 459
14 428 462 532 730 1,140 1,760 1,140 926 818 748 601 459
15 428 466 543 739 1,140 1,740 1,130 885 810 741 597 458
16 428 470 562 758 1,150 1,690 1,130 883 799 729 592 455
17 429 473 577 763 1,170 1,640 1,100 882 803 714 588 452
18 429 475 587 769 1,180 1,620 1,050 885 811 702 583 450
19 429 478 598 775 1,200 1,600 1,040 884 819 693 580 449
20 429 482 600 791 1,230 1,560 1,050 882 817 676 577 449
21 428 486 613 811 1,250 1,550 1,050 870 813 662 574 449
22 428 491 631 817 1,260 1,540 1,030 855 813 657 570 448
23 427 492 643 823 1,260 1,530 1,030 850 817 657 569 449
24 427 489 658 823 1,260 1,520 1,030 843 819 651 567 449
25 428 488 668 825 1,270 1,540 1,010 845 813 638 565 449
26 429 486 675 842 1,310 1,510 1,000 845 813 633 558 449
27 429 482 686 855 1,340 1,490 994 835 812 634 555 448
28 429 485 694 856 1,370 1,460 974 826 813 627 545 447
29 428 425 696 862 1,380 1,440 971 821 814 620 525 447
30 429   694 896 1,390 1,430 974 822 824 617 512 446
31 427   698   1,410   974 817   620   446