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USGS Surface-Water 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 06102050 Marias River near Loma MT


Chouteau County, Montana
Hydrologic Unit Code 10030203
Latitude  47°56'45.25", Longitude 110°34'51.02" NAD83
Drainage area 7,027  square miles
Contributing drainage area 6,480  square miles
Gage datum 2,570 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 1959-10-01 -> 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
1 373 280 488 667 920 1,370 1,420 974 864 859 692 551
2 368 293 466 656 923 1,360 1,380 975 861 859 705 499
3 362 320 486 661 923 1,440 1,290 1,010 858 853 701 514
4 355 340 477 652 947 1,510 1,260 1,010 869 823 710 473
5 343 350 487 654 967 1,530 1,240 998 879 806 716 434
6 339 349 473 667 987 1,530 1,230 978 885 803 725 419
7 323 348 439 679 994 1,530 1,180 995 892 801 722 402
8 318 332 425 667 989 1,540 1,160 1,070 887 799 721 391
9 310 358 436 678 999 1,570 1,160 1,080 882 787 726 387
10 305 375 434 691 1,010 1,570 1,230 1,040 884 786 725 387
11 301 397 428 729 1,020 1,780 1,150 1,070 893 788 733 384
12 294 426 440 783 1,040 1,780 1,170 1,120 900 776 736 386
13 282 440 460 809 1,070 1,800 1,180 1,120 902 766 738 395
14 274 458 478 813 1,100 1,840 1,180 1,100 875 764 740 380
15 275 466 477 852 1,130 1,870 1,130 1,020 856 769 739 382
16 275 477 459 863 1,140 1,900 1,100 963 845 760 738 414
17 268 485 480 920 1,160 1,830 1,060 944 825 747 740 423
18 263 482 481 1,020 1,190 1,710 1,040 946 817 738 738 417
19 263 488 479 1,020 1,200 1,700 1,020 952 837 740 741 389
20 280 500 513 964 1,210 1,700 1,020 951 857 732 729 389
21 290 515 532 887 1,200 1,690 1,040 947 847 722 710 367
22 282 536 619 831 1,160 1,650 1,050 917 850 711 701 369
23 255 545 701 822 1,170 1,610 1,060 897 850 698 703 376
24 247 548 799 821 1,180 1,520 1,040 893 859 709 705 379
25 247 534 828 825 1,190 1,510 1,050 883 878 697 713 368
26 391 525 867 832 1,200 1,520 1,020 877 875 693 714 358
27 262 511 832 862 1,230 1,500 1,000 878 873 692 714 356
28 268 494 801 885 1,240 1,480 988 869 875 693 697 360
29 270 338 901 888 1,270 1,450 965 865 874 690 690 366
30 272   840 894 1,300 1,420 946 862 856 682 621 370
31 275   821   1,360   964 861   678   375