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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 12342500 West Fork Bitterroot River nr Conner MT


Ravalli County, Montana
Hydrologic Unit Code 17010205
Latitude  45°43'29.38", Longitude 114°16'56.26" NAD83
Drainage area 317  square miles
Gage datum 4,581.4 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 1940-10-01 -> 2023-09-30)

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 83 78 85 125 328 1,200 451 216 228 141 123 90
2 83 78 88 131 361 1,170 428 216 226 142 124 89
3 83 77 89 133 404 1,180 410 218 224 141 122 88
4 84 77 89 137 440 1,190 390 219 220 139 123 87
5 85 77 89 138 455 1,180 371 220 219 136 121 86
6 82 77 89 140 462 1,170 351 223 221 137 119 86
7 82 77 89 143 486 1,150 331 221 219 138 116 86
8 83 77 89 144 525 1,120 312 220 216 139 113 86
9 84 77 89 152 552 1,090 301 222 214 143 110 88
10 83 77 89 156 625 1,040 289 225 209 141 107 90
11 84 77 86 167 680 994 277 228 201 139 105 90
12 84 78 85 171 699 981 268 235 197 140 101 89
13 84 78 85 174 710 969 257 236 197 146 98 89
14 84 78 85 181 751 936 246 238 194 147 96 88
15 84 78 87 193 794 903 236 237 192 147 95 90
16 84 78 88 198 861 879 230 236 191 148 95 92
17 82 78 89 201 912 858 225 235 188 144 97 90
18 80 78 89 204 972 822 219 236 184 140 98 86
19 79 77 90 211 1,030 798 212 236 179 135 99 84
20 78 77 90 224 1,100 774 207 236 175 129 97 84
21 78 78 91 239 1,110 742 203 235 171 130 97 85
22 78 79 95 248 1,100 712 201 237 167 134 97 86
23 78 79 98 261 1,120 678 201 239 162 137 97 86
24 78 78 99 274 1,130 647 200 235 160 136 96 86
25 78 80 102 291 1,150 616 199 232 159 134 96 85
26 78 83 104 298 1,200 580 196 232 154 130 94 84
27 78 83 107 303 1,230 549 202 231 151 129 93 84
28 78 84 109 308 1,240 521 207 229 150 127 89 84
29 78 86 113 310 1,250 499 207 228 147 125 88 85
30 78   115 313 1,250 475 212 228 144 124 88 84
31 78   118   1,230   215 227   122   84