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USGS Surface-Water 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 -> 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 64 72 133 189 192 610 430 143 132 92 72 79
2 62 73 156 184 196 616 394 141 127 91 72 77
3 61 76 211 179 204 584 370 138 123 88 76 78
4 60 77 235 177 209 563 370 136 120 83 77 79
5 60 77 230 181 210 555 382 137 117 83 76 79
6 61 78 217 185 218 559 367 140 115 82 76 79
7 62 78 202 180 232 594 342 140 115 81 78 75
8 64 78 187 175 254 669 321 142 113 80 81 76
9 65 78 181 174 270 772 302 140 113 79 82 75
10 65 81 197 180 291 763 284 134 113 78 80 76
11 65 99 239 191 300 735 265 134 112 77 78 79
12 66 124 236 196 319 720 261 133 113 77 77 78
13 66 140 237 195 329 673 255 134 114 78 76 78
14 66 151 247 198 343 650 246 136 113 78 76 78
15 66 122 232 197 344 658 241 139 110 78 76 79
16 68 114 236 191 344 673 233 139 106 79 74 78
17 76 113 296 187 367 663 226 139 103 80 76 77
18 87 112 256 181 386 678 212 134 103 81 77 76
19 88 110 255 180 409 715 201 132 101 80 74 77
20 86 116 318 175 437 726 200 136 99 79 75 85
21 83 121 332 181 475 685 190 144 99 78 72 87
22 80 128 354 187 502 674 188 159 101 78 74 82
23 80 132 411 193 526 699 190 155 102 77 75 80
24 78 127 418 194 534 686 181 148 101 77 77 80
25 78 130 336 191 537 618 170 150 99 76 76 80
26 77 131 339 189 579 574 162 147 95 77 76 79
27 75 132 311 189 712 545 160 144 92 80 75 77
28 74 132 318 192 700 523 160 137 90 80 76 75
29 72 162 287 198 670 503 155 131 89 79 73 72
30 71   265 194 631 469 150 129 88 78 76 68
31 72   266   601   148 143   78   67