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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 06012500 Red Rock R bl Lima Reservoir nr Monida MT


Beaverhead County, Montana
Hydrologic Unit Code 10020001
Latitude  44°39'21.17", Longitude 112°22'16.40" NAD83
Drainage area 566  square miles
Gage datum 6,530 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 1910-10-01 -> 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 23 20 19 20 206 457 405 217 184 80 74 36
2 23 20 19 21 208 461 390 214 182 79 72 34
3 23 20 19 21 214 470 374 211 180 78 69 34
4 23 20 19 22 216 482 364 207 175 77 69 33
5 23 20 19 24 223 486 360 206 173 75 69 32
6 22 20 19 27 228 483 359 211 167 74 68 32
7 22 20 19 28 234 480 355 212 161 75 64 33
8 22 20 19 29 240 478 355 213 160 74 63 31
9 22 20 19 33 244 480 350 211 159 73 64 31
10 22 20 19 35 252 479 344 210 157 71 62 31
11 22 20 19 39 264 479 332 211 154 69 59 29
12 22 20 19 45 275 481 323 210 152 67 56 29
13 22 20 19 51 286 483 312 210 145 66 55 29
14 21 20 19 60 304 481 303 213 139 68 54 28
15 22 20 19 70 313 478 296 213 132 69 50 28
16 21 20 18 77 319 478 291 212 121 69 46 27
17 21 20 19 83 322 476 285 209 119 69 45 27
18 21 20 19 89 330 475 279 205 118 69 45 26
19 21 20 19 97 327 473 270 202 115 68 44 26
20 21 20 19 109 333 468 258 202 111 68 44 26
21 21 20 18 118 341 463 247 202 109 67 44 26
22 21 20 18 131 349 458 241 197 104 65 43 25
23 21 20 18 143 365 453 235 193 102 65 42 24
24 21 20 18 149 380 449 226 192 98 67 42 24
25 21 20 18 155 388 443 225 191 96 67 40 24
26 21 20 18 165 400 436 222 192 94 66 39 24
27 21 20 18 175 408 433 222 193 90 67 39 24
28 21 20 19 184 414 428 222 192 87 67 39 24
29 21 18 19 193 421 421 221 187 84 66 39 24
30 21   19 197 432 415 222 182 82 65 39 23
31 20   19   447   220 183   63   23