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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 2.5 2.9 1.7 96 319 494 565 605 418 82 29 2.1
2 2.5 2.9 1.8 104 331 499 569 604 413 71 30 2.1
3 2.5 2.9 1.8 107 349 506 571 602 404 69 34 2.1
4 2.5 2.9 1.8 110 365 516 576 602 392 63 37 2.1
5 2.5 2.9 1.9 115 372 519 566 602 376 56 41 2.1
6 2.5 2.9 3.4 123 380 514 565 602 357 49 42 2.1
7 2.6 3 4.2 131 390 517 574 600 338 40 42 2.2
8 2.6 3 6.6 138 396 515 578 584 332 34 42 2.2
9 2.6 3 9.1 144 401 518 580 586 329 32 40 2.2
10 2.6 3 12 147 406 534 582 583 316 30 34 2.2
11 2.6 3 15 149 411 536 585 574 299 27 31 2.2
12 2.6 3 18 155 420 541 590 579 279 25 30 2.2
13 2.6 3 18 161 424 541 597 577 265 27 20 2.2
14 2.6 3 19 166 425 538 601 571 253 29 8.2 2.3
15 2.7 3 21 175 438 530 604 567 234 31 7.7 2.3
16 2.7 3.1 24 185 442 532 606 566 228 31 7.5 2.3
17 2.7 3.1 28 195 453 529 601 558 219 31 6.9 2.3
18 2.7 3.1 29 207 455 530 602 550 207 34 7.7 2.3
19 2.7 3.1 31 214 460 531 604 545 196 38 11 2.3
20 2.7 3.1 31 221 462 533 605 540 190 41 6.8 2.3
21 2.7 3.1 35 228 462 534 604 535 178 43 0.57 2.3
22 2.7 3.1 42 244 475 532 597 519 164 44 0.51 2.4
23 2.8 3.2 47 253 471 530 593 510 152 42 0.47 2.4
24 2.8 3.2 52 270 460 536 592 498 141 38 0.46 2.4
25 2.8 3.2 57 284 460 541 594 494 128 37 0.17 2.4
26 2.8 3.4 61 295 461 538 598 484 119 37 0.17 2.4
27 2.8 3.5 66 302 470 541 599 481 110 35 0.18 2.4
28 2.8 4.1 70 304 479 551 603 471 100 31 0.16 2.4
29 2.8 8.1 74 305 489 554 605 464 91 28 0.17 2.4
30 2.9   81 307 495 562 604 449 89 25 0.17 2.5
31 2.9   89   494   604 434   25   2.5