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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).


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 12334510 Rock Creek near Clinton MT


Missoula County, Montana
Hydrologic Unit Code 17010202
Latitude  46°43'20.41", Longitude 113°40'59.02" NAD83
Drainage area 889  square miles
Gage datum 3,519.46 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 1972-10-01 -> 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
1 172 189 201 343 885 2,040 1,040 403 261 254 241 226
2 174 191 205 346 904 2,020 996 389 258 255 243 235
3 173 184 205 341 946 2,020 965 374 253 251 244 233
4 172 178 209 339 1,000 2,020 935 363 249 251 244 223
5 172 178 210 350 1,050 2,040 898 356 247 251 243 211
6 173 176 211 371 1,100 2,070 864 348 249 248 243 200
7 176 184 212 387 1,180 2,050 834 340 250 250 242 197
8 184 199 215 408 1,230 1,990 802 337 254 253 255 194
9 185 205 216 430 1,270 1,930 770 327 262 249 251 192
10 184 204 227 445 1,330 1,850 754 318 259 247 240 197
11 178 194 241 461 1,390 1,800 737 314 259 247 237 206
12 176 190 239 482 1,380 1,760 706 311 267 248 231 207
13 175 194 246 494 1,400 1,770 687 305 272 249 233 204
14 182 197 247 507 1,450 1,820 672 300 265 251 234 207
15 184 196 249 519 1,550 1,800 647 295 261 252 227 205
16 204 197 263 514 1,660 1,780 630 291 261 254 228 201
17 204 203 274 520 1,730 1,760 609 287 260 254 231 192
18 199 198 275 542 1,820 1,690 592 280 261 252 230 180
19 198 196 283 571 1,870 1,650 572 277 264 249 227 177
20 196 199 283 605 1,880 1,640 551 278 266 249 223 178
21 191 202 287 652 1,880 1,580 532 282 265 251 220 183
22 187 201 293 703 1,930 1,520 512 281 262 253 217 185
23 188 200 301 768 1,950 1,460 494 283 259 250 213 181
24 189 196 302 812 2,000 1,410 477 288 258 246 218 177
25 187 201 296 843 2,070 1,340 464 283 256 245 220 178
26 184 203 301 838 2,070 1,290 453 275 254 245 219 180
27 185 198 308 846 2,090 1,230 446 271 254 245 215 182
28 184 196 307 855 2,080 1,160 433 267 253 244 215 181
29 181 205 306 864 2,060 1,120 421 262 251 245 212 177
30 180   309 877 2,060 1,090 413 258 251 242 217 176
31 180   322   2,050   409 259   241   174