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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 12354000 St. Regis River near St. Regis, MT


Mineral County, Montana
Hydrologic Unit Code 17010204
Latitude  47°17'48.16", Longitude 115°07'21.45" NAD83
Drainage area 304  square miles
Gage datum 2,645 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 1909-10-01 -> 2025-09-30)

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
1 162 276 291 776 1,470 1,860 628 184 120 114 146 196
2 156 255 291 802 1,500 1,870 592 185 121 110 147 196
3 153 249 289 816 1,580 1,860 568 179 118 111 154 204
4 152 250 286 831 1,640 1,810 543 174 117 116 160 208
5 156 263 286 850 1,760 1,740 517 170 118 111 163 210
6 166 258 300 899 1,830 1,690 492 167 117 109 169 197
7 173 256 307 975 1,890 1,630 471 166 114 109 210 189
8 184 269 304 990 1,860 1,560 446 161 113 113 202 185
9 192 273 312 1,020 1,900 1,540 423 156 111 120 186 191
10 173 295 339 1,060 1,900 1,460 404 153 110 116 197 184
11 168 294 341 1,070 1,900 1,350 392 150 110 120 199 192
12 165 279 365 1,070 1,900 1,320 381 148 110 135 215 192
13 172 271 401 1,100 1,910 1,290 368 147 109 132 209 189
14 199 267 412 1,140 1,910 1,280 355 145 110 130 188 192
15 252 262 468 1,180 1,960 1,270 338 142 111 127 182 189
16 420 273 550 1,140 2,060 1,280 323 142 111 127 188 185
17 423 277 548 1,120 2,170 1,260 309 138 108 124 186 182
18 339 269 552 1,110 2,180 1,200 298 137 112 122 190 179
19 303 264 587 1,120 2,120 1,130 285 135 113 122 200 180
20 282 267 557 1,190 2,090 1,070 275 134 113 124 206 179
21 263 272 530 1,260 2,060 1,010 263 135 114 126 220 187
22 249 306 522 1,290 2,040 958 252 133 117 133 228 197
23 236 299 552 1,340 1,990 914 242 132 116 137 239 240
24 231 287 543 1,420 1,970 876 233 131 114 134 254 232
25 233 274 547 1,470 1,950 836 226 127 114 132 258 202
26 223 271 558 1,480 1,970 794 218 131 115 131 241 194
27 224 267 559 1,480 2,020 752 212 130 112 135 229 187
28 222 285 589 1,430 2,050 728 206 128 111 140 219 184
29 223 386 614 1,420 2,000 710 199 123 113 142 223 179
30 230   657 1,440 1,960 667 193 121 114 138 206 169
31 262   722   1,890   188 119   137   164