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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 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 -> 2023-09-30)

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
1 174 190 202 343 920 2,080 1,060 403 262 255 244 224
2 176 192 208 348 945 2,060 1,010 390 259 256 245 232
3 175 184 209 344 981 2,060 975 376 254 253 247 230
4 174 178 213 344 1,030 2,060 946 364 250 252 246 221
5 174 180 214 357 1,070 2,080 909 357 248 252 246 210
6 175 178 214 375 1,130 2,100 872 349 250 249 246 200
7 178 185 216 390 1,220 2,080 841 340 250 250 245 199
8 186 199 219 411 1,270 2,020 809 338 254 253 256 196
9 186 205 218 433 1,300 1,950 778 328 262 249 251 194
10 184 203 227 448 1,350 1,870 761 319 259 247 241 199
11 178 193 240 463 1,400 1,830 742 315 260 248 237 206
12 177 189 240 482 1,390 1,790 710 311 267 249 231 208
13 178 192 246 491 1,400 1,790 689 306 271 251 235 206
14 184 195 247 502 1,450 1,830 675 301 265 254 237 208
15 184 195 249 513 1,550 1,800 649 296 261 255 230 207
16 203 198 263 507 1,670 1,780 632 292 260 255 230 202
17 204 203 274 512 1,750 1,760 611 287 259 257 233 192
18 200 198 276 534 1,850 1,700 594 281 261 257 231 182
19 199 196 284 563 1,920 1,670 574 278 265 254 230 180
20 197 199 285 595 1,950 1,650 553 279 267 254 226 182
21 193 201 288 641 1,950 1,590 534 284 266 255 221 187
22 189 200 293 692 1,980 1,520 515 283 264 256 217 188
23 189 199 300 757 1,980 1,460 497 285 262 254 214 182
24 189 194 302 802 2,010 1,400 480 289 260 250 220 178
25 186 200 297 832 2,070 1,340 467 285 257 247 222 180
26 182 202 302 830 2,080 1,280 455 278 255 246 222 182
27 184 197 309 839 2,120 1,220 448 273 256 249 217 181
28 185 196 309 851 2,120 1,160 435 269 254 248 215 180
29 182 204 311 865 2,110 1,130 423 265 252 247 212 177
30 182   313 891 2,110 1,100 415 260 252 243 215 175
31 181   325   2,100   410 260   244   175