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USGS Daily Statistics for the Nation

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 -> 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
1 174 187 202 339 927 2,070 1,050 400 262 254 243 222
2 175 191 207 343 961 2,040 1,000 388 259 255 245 231
3 173 184 208 340 1,000 2,040 968 373 253 253 247 229
4 173 179 212 343 1,060 2,050 939 362 250 252 247 220
5 174 180 211 357 1,110 2,060 902 355 248 251 247 210
6 175 177 212 375 1,170 2,090 865 348 249 249 248 200
7 178 184 214 388 1,250 2,070 834 340 250 249 246 200
8 184 198 216 408 1,300 2,010 803 337 254 252 257 197
9 185 203 216 429 1,320 1,930 772 328 261 248 251 194
10 183 202 225 446 1,350 1,860 755 319 258 246 241 198
11 177 192 238 467 1,400 1,810 738 314 258 247 237 206
12 175 188 238 488 1,400 1,780 706 310 265 248 232 208
13 175 191 244 494 1,420 1,780 685 305 269 250 235 206
14 181 195 245 505 1,470 1,810 670 300 263 252 237 207
15 181 194 246 518 1,570 1,780 645 295 260 254 230 206
16 199 196 260 514 1,690 1,750 628 291 259 254 230 201
17 201 201 271 519 1,780 1,740 607 287 258 255 232 192
18 197 196 273 538 1,880 1,690 590 280 261 255 231 182
19 196 195 282 564 1,940 1,650 570 277 264 252 229 180
20 193 198 284 593 1,970 1,640 549 279 266 252 225 183
21 189 200 288 636 1,970 1,570 531 284 265 254 221 187
22 185 199 292 685 1,990 1,500 511 284 263 255 217 188
23 187 198 298 746 1,990 1,440 494 285 261 253 215 183
24 186 192 300 791 2,010 1,390 477 288 259 249 220 178
25 184 198 295 822 2,070 1,320 464 285 256 247 221 178
26 181 202 299 820 2,070 1,270 453 277 254 246 220 180
27 182 198 305 832 2,110 1,210 445 273 255 248 215 181
28 183 195 306 846 2,110 1,160 432 269 253 247 214 181
29 180 204 308 861 2,100 1,120 421 264 251 246 210 178
30 179   310 891 2,100 1,090 412 260 251 242 213 177
31 178   321   2,080   408 260   242   175