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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 06130500 Musselshell River at Mosby MT


Petroleum County, Montana
Hydrologic Unit Code 10040205
Latitude  46°59'40.89", Longitude 107°53'20.99" NAD83
Drainage area 7,784  square miles
Gage datum 2,493.9 feet above NGVD29
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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 1930-10-01 -> 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 68 95 218 416 306 993 641 125 137 98 92 84
2 76 96 293 364 319 932 603 118 117 98 92 84
3 81 96 414 325 330 936 552 127 114 96 93 85
4 77 98 352 307 332 1,000 569 118 109 120 94 85
5 78 106 326 297 333 931 539 115 106 127 96 82
6 87 113 317 289 367 902 539 125 104 119 97 80
7 82 115 350 295 459 931 506 123 106 115 96 79
8 81 110 360 296 447 1,040 440 118 129 101 96 78
9 82 108 390 291 452 1,140 404 111 112 93 95 78
10 81 109 412 306 539 1,210 380 108 111 90 92 78
11 78 108 483 332 670 1,090 335 118 104 89 90 79
12 76 121 568 369 583 1,160 321 104 109 89 89 78
13 75 160 531 346 551 1,100 327 104 115 87 89 80
14 76 256 482 342 526 1,110 354 101 112 84 89 78
15 75 293 429 357 507 1,050 296 112 107 85 91 77
16 76 301 401 355 512 990 281 130 111 84 94 77
17 80 310 398 353 507 1,120 256 122 106 84 95 79
18 80 264 460 353 534 1,190 240 113 108 85 94 80
19 81 242 461 325 597 1,110 231 106 157 87 92 79
20 86 224 466 304 655 1,050 228 112 125 88 89 78
21 86 204 563 295 752 1,080 244 118 113 89 85 79
22 86 192 610 288 846 1,060 199 113 105 89 87 78
23 86 174 599 310 890 965 180 117 103 95 88 77
24 86 168 580 332 892 917 175 169 105 92 90 77
25 87 218 605 313 923 893 167 289 200 91 89 78
26 87 279 605 298 879 843 159 241 165 90 90 76
27 91 246 627 290 893 825 231 173 113 89 88 75
28 93 236 618 289 971 861 201 146 107 90 87 73
29 97 196 544 304 957 778 151 134 100 90 85 71
30 98   498 306 991 692 143 121 97 89 82 70
31 97   450   1,030   132 122   89   69