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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 06025250 Big Hole River at Maiden Rock nr Divide MT


Beaverhead County, Montana
Hydrologic Unit Code 10020004
Latitude  45°42'04.57", Longitude 112°44'09.49" NAD83
Drainage area 2,199  square miles
Gage datum 5,300 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 1997-10-01 -> 2025-09-30)

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     327 859 1,970 4,160 2,060 519 298 367 522  
2     335 876 1,950 4,180 1,910 508 297 376 374  
3     336 868 1,960 4,200 1,800 488 291 371 345  
4     340 913 2,010 4,230 1,720 471 289 370    
5     342 972 2,090 4,310 1,620 459 296 375    
6     344 985 2,200 4,290 1,500 454 304 377    
7     344 983 2,370 4,280 1,410 453 305 378    
8     346 999 2,490 4,260 1,350 460 302 378    
9     345 1,070 2,540 4,120 1,290 449 304 376    
10     360 1,220 2,520 4,000 1,240 431 321 372    
11     387 1,300 2,490 3,790 1,190 420 319 375    
12     397 1,330 2,450 3,570 1,140 407 308 382    
13     415 1,340 2,500 3,480 1,110 393 302 393    
14     443 1,340 2,560 3,410 1,080 384 297 411    
15     485 1,320 2,670 3,350 1,050 377 295 411    
16     547 1,260 2,840 3,300 1,010 373 298 411    
17     577 1,250 3,060 3,410 975 359 303 417    
18     580 1,330 3,240 3,540 910 343 306 419    
19     587 1,470 3,400 3,600 845 329 308 421    
20   476 647 1,580 3,590 3,410 789 321 313 425    
21   439 670 1,670 3,650 3,190 772 327 318 427    
22   445 647 1,820 3,710 3,030 735 330 320 429    
23   419 650 1,930 3,810 2,940 692 335 322 432    
24   398 637 1,950 3,880 2,830 665 339 324 433    
25   410 634 1,940 4,010 2,680 636 328 324 430    
26   405 646 1,910 4,010 2,550 602 323 326 429    
27   402 666 1,930 4,060 2,410 585 316 325 435    
28   374 700 1,950 4,080 2,300 582 309 323 427    
29   431 710 1,990 4,120 2,240 567 303 325 417    
30     733 1,980 4,110 2,160 550 299 341 423    
31     794   4,110   532 296   450