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USGS Daily Statistics for the Nation

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 11 9.8 13 118 251 126 15 6.9 31 28 16
2 12 11 10 12 105 258 115 13 6.7 35 27 16
3 13 12 9.6 14 107 367 106 15 6.4 31 35 16
4 12 13 8.4 17 123 444 103 16 6.8 25 33 16
5 12 13 8.5 15 137 382 98 24 7.3 24 31 16
6 12 13 7.5 8.2 153 340 88 24 6.6 25 29 17
7 12 13 8.2 5.8 120 319 83 23 6.8 25 25 16
8 12 13 8.7 17 104 282 78 21 8.9 25 24 15
9 13 12 8.9 51 81 309 72 17 8.9 25 23 15
10 13 12 9.4 88 73 250 69 15 8.2 24 22 17
11 14 13 8.7 148 69 227 71 13 7.6 24 20 14
12 14 14 7.5 151 85 208 61 11 6.8 25 24 14
13 14 15 7.1 58 123 185 55 11 6.5 27 24 14
14 14 14 7.3 20 156 175 53 10 6.8 28 23 15
15 14 13 7.6 18 196 157 53 9.4 7.3 27 23 15
16 14 12 7.5 13 207 143 48 7.8 7.3 26 22 15
17 14 13 9.2 14 220 134 45 6.3 7.5 26 25 15
18 13 14 15 17 230 141 44 6.7 7.1 25 27 15
19 12 14 20 18 234 143 39 7.3 6.9 24 31 16
20 11 15 11 17 262 133 36 10 7.8 25 26 15
21 9.8 15 7.3 18 278 132 34 13 21 25 20 14
22 10 14 6.5 17 252 118 30 11 30 27 19 14
23 10 13 5.9 13 225 107 25 12 35 31 16 13
24 9.5 13 6.9 8 209 142 24 9.4 31 29 14 12
25 9.9 12 7.7 9.3 219 130 23 10 28 26 16 11
26 10 11 7.9 22 235 125 23 12 28 27 16 11
27 10 9.5 7.5 16 250 126 20 11 27 28 18 11
28 10 9.9 7.7 18 269 124 23 11 29 28 22 11
29 9.9 22 8.8 29 280 142 26 10 29 30 20 12
30 10   11 68 266 136 21 8.8 27 29 17 13
31 11   13   260   18 7.8   28   13