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USGS Daily Statistics for Montana

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Questions or concerns about USGS streamflow data in Montana and Wyoming can be directed to Kirk Miller (kmiller@usgs.gov; 307-775-9168).

Updated June 11, 2020 - USGS water-resources monitoring activities will be restored at the following sites:
  • 12323600 Silver Bow Creek at Opportunity, Montana (POR: 31 years)
  • 12323750 Silver Bow Creek at Warm Springs, Montana (POR: 35 years)

Updated May 12, 2020 - USGS water-resources monitoring activities were suspended effective June 1, 2020 at the following site:
  • 06088500 Muddy Creek near Vaughn, Montana (POR: 82 years)
USGS monitoring activities at this site was funded by our partner and USGS Cooperative Matching Funds (06088500). Lack of partner funding for this site resulted in suspension of all USGS monitoring activities. Efforts are ongoing to secure funding for future monitoring. Historical data will continue to be available from USGS.

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 12324400 Clark Fork ab Little Blackfoot R nr Garrison MT


Powell County, Montana
Hydrologic Unit Code 17010201
Latitude  46°30'39.28", Longitude 112°47'22.87" NAD83
Drainage area 1,130  square miles
Gage datum 4,350 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 2008-10-01 -> 2020-09-30)

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
1 235 245 239 341 424 838 619 164 157 219 301 286
2 239 239 245 342 404 867 583 161 153 225 307 287
3 245 246 250 339 390 880 551 155 150 230 309 282
4 239 253 262 334 389 848 535 149 149 238 310 281
5 244 257 271 346 387 847 513 147 152 254 309 263
6 253 257 301 354 393 885 491 148 158 259 306 253
7 260 250 290 356 419 908 470 153 160 259 302 243
8 256 255 285 379 437 944 452 153 161 261 302 236
9 262 270 295 386 448 921 427 150 174 266 301 235
10 256 263 326 386 473 908 400 149 186 270 300 243
11 249 260 329 375 472 866 378 152 184 273 299 254
12 253 259 315 373 463 794 364 156 181 277 294 262
13 246 273 308 377 466 808 350 154 178 282 289 264
14 245 275 308 380 471 858 366 157 176 285 292 260
15 239 282 311 370 477 831 376 160 181 285 291 263
16 240 285 328 355 507 841 354 163 189 277 291 252
17 254 279 331 347 566 909 331 161 190 283 292 256
18 272 274 324 341 618 910 313 156 190 280 293 262
19 280 262 318 342 629 910 290 150 193 277 288 269
20 271 259 317 354 636 898 270 143 196 284 288 269
21 261 257 311 372 629 889 253 141 197 286 289 270
22 265 265 324 392 628 867 237 141 194 293 285 263
23 260 265 340 417 652 829 223 150 193 292 288 253
24 256 256 332 427 700 786 209 171 193 293 286 258
25 269 244 331 436 779 768 196 167 191 294 287 256
26 269 234 351 445 795 762 187 164 193 295 279 254
27 265 234 366 459 824 730 191 159 195 296 285 253
28 259 233 362 450 827 692 193 155 198 296 304 255
29 263 274 347 436 827 655 185 154 202 299 305 255
30 265   339 434 818 633 173 153 212 302 291 247
31 254   341   820   164 155   303   245