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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 06200000 Boulder River at Big Timber MT


Sweet Grass County, Montana
Hydrologic Unit Code 10070002
Latitude  45°50'01.66", Longitude 109°56'19.34" NAD83
Drainage area 525  square miles
Gage datum 4,056.3 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 1947-10-01 -> 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
1 136 128 123 147 402 2,320 2,360 388 166 201 216 176
2 136 127 123 150 434 2,350 2,260 371 165 204 210 175
3 137 127 123 147 456 2,490 2,210 349 163 206 211 173
4 138 127 122 146 489 2,670 2,160 333 160 210 212 172
5 140 127 122 148 506 2,880 2,070 317 158 211 209 165
6 137 124 127 153 542 3,070 1,970 300 159 213 210 163
7 137 123 126 158 597 3,080 1,890 284 159 215 209 163
8 136 124 127 163 653 3,010 1,810 268 157 215 212 162
9 137 124 127 167 686 2,930 1,690 254 159 215 209 160
10 140 127 128 173 706 2,920 1,620 241 162 215 204 165
11 139 129 127 178 738 2,830 1,540 231 167 217 200 168
12 139 131 128 183 768 2,760 1,420 223 176 221 198 170
13 141 132 128 183 830 2,860 1,330 218 178 220 200 165
14 142 131 129 187 870 2,910 1,260 212 176 220 201 162
15 143 131 128 193 937 2,850 1,180 204 176 223 195 159
16 140 134 129 196 999 2,870 1,090 198 174 228 197 155
17 137 137 131 200 1,110 2,910 1,000 193 173 231 198 151
18 138 135 133 207 1,180 2,870 930 189 175 231 196 148
19 135 134 134 218 1,260 2,900 870 189 184 228 195 151
20 134 132 133 229 1,370 2,850 825 187 191 228 193 148
21 136 131 135 243 1,500 2,810 767 190 195 227 189 151
22 134 129 137 257 1,550 2,800 713 189 198 228 182 150
23 136 129 136 282 1,620 2,750 667 189 194 224 180 146
24 136 127 138 297 1,670 2,740 622 192 196 224 187 143
25 135 126 137 311 1,780 2,700 587 187 195 222 187 144
26 133 124 138 319 1,850 2,630 554 183 194 221 183 144
27 131 125 140 327 1,950 2,590 517 176 197 219 178 143
28 129 125 139 335 2,100 2,530 483 171 199 217 176 145
29 130 124 139 349 2,210 2,460 456 171 196 217 175 145
30 128   142 368 2,230 2,410 439 171 194 212 175 141
31 129   145   2,260   412 169   220   139