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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 06127500 Musselshell River at Musselshell MT


Musselshell County, Montana
Hydrologic Unit Code 10040202
Latitude  46°31'20.73", Longitude 108°06'31.94" NAD83
Drainage area 4,534  square miles
Gage datum 2,984.72 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 1927-10-01 -> 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 64 72 133 189 190 604 426 143 131 92 72 79
2 62 73 156 184 194 612 391 141 126 90 72 77
3 61 76 211 178 202 580 367 138 122 88 76 78
4 60 77 235 176 207 559 367 136 119 83 77 79
5 60 77 230 180 208 550 378 136 116 83 76 79
6 61 78 217 184 217 554 363 140 114 82 76 79
7 62 78 202 179 230 589 339 140 114 81 78 75
8 64 78 187 174 252 662 320 142 112 80 81 76
9 65 78 181 173 268 764 300 141 112 79 82 75
10 65 81 197 180 288 755 283 135 112 78 80 76
11 65 99 239 191 298 727 263 134 111 77 78 79
12 66 124 236 195 317 713 260 134 112 77 77 78
13 66 140 237 193 326 666 254 134 113 78 76 78
14 66 151 247 196 339 642 245 136 112 78 76 78
15 66 122 232 196 341 651 240 139 109 78 76 79
16 68 114 236 190 340 665 231 139 105 79 74 78
17 76 113 296 185 363 656 225 139 102 80 76 77
18 87 112 256 180 383 671 211 134 103 81 77 76
19 88 110 255 179 405 709 200 132 101 80 74 77
20 86 116 318 174 433 720 199 136 100 79 75 85
21 83 121 332 180 470 679 189 144 101 79 72 87
22 80 128 354 185 497 669 188 159 101 78 74 82
23 80 132 411 192 522 694 190 154 102 77 75 80
24 78 127 418 193 529 680 180 148 102 77 77 80
25 78 130 336 190 533 612 170 150 99 77 76 80
26 77 131 339 188 575 569 162 147 95 78 76 79
27 75 132 311 187 706 540 159 144 92 80 75 77
28 74 132 318 190 693 517 160 137 90 80 76 75
29 72 162 287 196 663 498 155 131 89 80 73 72
30 71   265 192 624 464 150 129 88 79 76 68
31 72   266   595   148 142   80   67