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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 06123030 Musselshell River ab Mud Cr nr Shawmut MT


Wheatland County, Montana
Hydrologic Unit Code 10040201
Latitude  46°19'08.37", Longitude 109°27'37.97" NAD83
Drainage area 1,518  square miles
Gage datum 3,790 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       47 129 542 253 52 45 54 64  
2       48 129 519 236 51 44 51 95  
3       45 121 538 230 51 42 51    
4       44 123 564 231 51 41 46    
5       44 128 590 225 59 42 47    
6       49 140 548 217 55 43 47    
7       51 151 521 204 55 44 46    
8       65 163 542 197 55 45 43    
9       67 173 563 185 56 46 42    
10       88 198 547 179 54 48 46    
11       95 225 499 169 55 52 47    
12       105 274 469 157 56 51 47    
13       117 257 444 148 55 51 49    
14       85 243 413 144 52 49 50    
15       70 267 377 135 51 49 50    
16       66 293 355 128 51 50 49    
17       64 326 360 119 50 49 49    
18       61 375 363 109 49 51 49    
19       59 408 401 99 49 53 49    
20       61 440 464 90 48 51 48    
21     8.7 74 445 473 81 51 51 48    
22     8.6 102 456 421 74 52 54 45    
23     9.2 122 477 380 68 59 55 44    
24     9 122 565 380 63 68 54 54    
25     8.9 117 674 370 60 61 52 56    
26     8.8 114 747 337 58 50 52 54    
27     14 122 721 326 58 46 52 56    
28     9.3 125 673 325 59 45 53 56    
29     8 122 604 289 62 45 58 56    
30     43 120 597 269 62 45 58 57    
31     38   586   58 47   57