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USGS Daily Statistics for Montana

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Questions or concerns about USGS data and data products in Montana and Wyoming can be directed to the Wyoming-Montana Water Science Center Data Management Section.


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 05018000 St. Mary Canal at intake near Babb MT


Glacier County, Montana
Hydrologic Unit Code 10010002
Latitude  48°51'10", Longitude 113°25'01" NAD83
Gage datum 4,470 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 1917-10-01 -> 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 1.9 2 1.7 95 324 496 555 605 418 82 29 1.7
2 1.9 2 1.7 102 336 501 560 604 413 71 29 1.7
3 1.9 2.1 1.8 105 354 507 562 602 404 69 34 1.7
4 1.9 2.1 1.8 109 369 517 566 602 392 63 36 1.7
5 1.9 2.1 1.9 113 376 521 557 602 376 56 40 1.7
6 1.9 2.1 3.4 121 384 515 556 602 357 49 41 1.7
7 1.9 2.1 4.1 129 394 519 565 600 338 40 41 1.7
8 1.9 2.1 6.5 136 400 517 569 584 332 34 40 1.7
9 1.9 2.1 9 142 405 520 571 586 329 32 39 1.7
10 1.9 2.1 12 145 409 535 573 583 316 30 33 1.7
11 1.9 2.1 15 148 415 538 575 574 299 27 30 1.7
12 1.9 2.1 17 155 423 542 580 579 279 25 29 1.7
13 1.9 2.1 18 162 428 542 587 577 265 27 20 1.7
14 1.9 2.1 19 169 428 539 591 571 253 29 8 1.7
15 1.9 2.1 21 179 441 532 594 567 234 31 7.5 1.7
16 1.9 2.1 23 191 445 533 596 566 228 31 7.3 1.7
17 2 2.1 28 202 456 525 591 558 219 31 6.7 1.8
18 2 2.1 29 213 456 521 592 550 207 34 7.6 1.8
19 2 2.2 30 221 461 522 594 545 196 38 11 1.8
20 2 2.2 31 228 463 524 595 540 190 41 6.7 1.8
21 2 2.2 35 234 462 525 593 535 178 43 0.59 1.8
22 2 2.2 41 250 475 523 587 519 164 44 0.53 1.8
23 2 2.2 47 259 471 521 593 510 152 42 0.49 1.8
24 2 2.2 51 275 460 527 592 498 141 38 0.48 1.8
25 2 2.7 57 290 460 532 594 494 128 37 0.2 1.8
26 2 2.8 61 300 461 529 598 484 119 37 0.2 1.8
27 2 3 65 307 470 531 599 481 110 35 0.21 1.8
28 2 3.7 69 309 479 541 603 471 100 31 0.19 1.8
29 2 4.6 73 310 489 544 605 464 91 28 0.2 1.8
30 2   80 312 497 553 604 449 89 25 0.2 1.8
31 2   88   495   604 434   25   1.8