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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 06119200 South Fork Musselshell River at Martinsdale, MT


Meagher County, Montana
Hydrologic Unit Code 10040201
Latitude  46°27'44.35", Longitude 110°19'06.61" NAD83
Drainage area 274  square miles
Gage datum 4,783 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 2018-10-01 -> 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 12 9.4 9.7 16 125 251 126 15 6.9 31 28 16
2 12 9.6 11 14 109 258 115 13 6.7 35 27 16
3 12 10 11 17 111 367 106 15 6.4 31 35 16
4 12 11 9.6 19 133 444 103 16 6.8 25 33 16
5 12 12 9.5 15 150 382 98 24 7.3 24 31 16
6 12 12 8.4 6.2 170 340 88 24 6.6 25 29 17
7 12 12 9.5 5.4 131 319 83 23 6.8 25 25 16
8 12 11 10 20 109 282 78 21 8.9 25 24 15
9 12 10 10 62 80 309 72 17 8.9 25 23 15
10 13 11 11 109 66 250 69 15 8.2 24 22 17
11 14 12 10 184 58 227 71 13 7.6 24 20 14
12 15 13 8 187 68 208 61 11 6.8 25 24 14
13 16 14 6.9 71 109 185 55 11 6.5 27 24 14
14 16 13 7.5 21 141 175 53 10 6.8 28 23 15
15 15 13 8.2 18 191 157 53 9.4 7.3 27 23 15
16 15 13 7.9 11 207 143 48 7.8 7.3 26 22 15
17 14 13 8.1 14 221 134 45 6.3 7.5 26 25 15
18 14 13 8.6 19 237 141 44 6.7 7.1 25 27 15
19 12 14 9 21 245 143 39 7.3 6.9 24 31 16
20 11 15 9.7 19 262 133 36 10 7.8 25 26 15
21 8.9 15 6.7 21 278 132 34 13 21 25 20 14
22 9 13 6.7 20 252 118 30 11 30 27 19 14
23 9.2 12 6.5 15 225 107 25 12 35 31 16 13
24 8.4 12 7.9 8.9 209 142 24 9.4 31 29 14 12
25 8.6 11 9 10 219 130 23 10 28 26 16 11
26 8.9 11 9.4 26 235 125 23 12 28 27 16 11
27 8.7 11 8.8 18 250 126 20 11 27 28 18 11
28 8.7 10 9.1 17 269 124 23 11 29 28 22 11
29 7.9 35 11 25 280 142 26 10 29 30 20 12
30 8.5   14 69 266 136 21 8.8 27 29 17 13
31 8.9   16   260   18 7.8   28   13