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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 06119600 Musselshell River nr Martinsdale, MT


Wheatland County, Montana
Hydrologic Unit Code 10040201
Latitude  46°28'37.05", Longitude 110°14'56.28" NAD83
Drainage area 537  square miles
Gage datum 4,660 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 2002-10-01 -> 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 35 25 31 53 190 399 159 37 30 40 41 46
2 35 24 30 53 186 410 152 36 29 40 33 46
3 35 24 31 52 190 420 148 35 29 40 55 45
4 34 24 31 54 200 433 141 34 30 39 55 45
5 34 23 32 61 202 408 137 36 31 39 55 45
6 34 23 45 71 226 403 130 38 31 40 54 44
7 33 23 72 82 242 413 125 39 31 40 54 44
8 33 22 53 74 253 411 118 37 31 40 54 43
9 33 22 45 98 258 386 113 34 34 41 53 43
10 32 22 62 110 267 373 104 33 35 40 53 43
11 32 21 42 120 280 364 101 40 34 41 53 42
12 32 21 44 134 260 348 97 38 34 43 52 42
13 31 21 50 91 271 327 92 35 32 44 52 42
14 31 20 42 78 306 300 88 34 30 45 52 41
15 30 20 46 81 328 278 85 34 30 45 51 41
16 30 20 50 79 350 281 81 31 31 45 51 41
17 30 19 50 81 388 283 77 31 31 46 51 40
18 29 19 51 81 433 283 74 31 31 45 50 40
19 29 19 52 87 447 297 67 31 32 44 50 40
20 29 18 45 108 436 312 63 33 32 45 50 39
21 28 18 43 147 456 283 59 34 34 44 49 39
22 28 18 45 158 447 262 56 32 37 43 49 39
23 28 17 50 162 448 240 54 34 40 43 49 38
24 28 17 68 158 469 240 51 38 38 42 48 38
25 27 17 69 161 576 225 47 36 37 42 48 38
26 27 16 76 171 553 210 46 32 37 41 47 37
27 26 16 69 168 510 201 45 32 37 42 47 37
28 26 15 55 170 482 182 46 32 39 42 47 37
29 26   49 179 471 175 45 32 40 43 47 36
30 25   48 190 443 168 41 31 39 43 46 36
31 25   51   413   38 31   42   36