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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 September 18, 2020 - USGS water-resources monitoring activities were restored effective August 17, 2020 at the following site:
  • 06088500 Muddy Creek near Vaughn, Montana (POR: 82 years)

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)


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 12332000 Middle Fork Rock Cr nr Philipsburg MT


Granite County, Montana
Hydrologic Unit Code 17010202
Latitude  46°11'04.45", Longitude 113°30'05.65" NAD83
Drainage area 121  square miles
Gage datum 5,444.08 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 1937-10-01 -> 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 33 33 33 44 149 544 300 92 55 49 47 42
2 33 34 32 45 154 541 287 90 54 50 46 42
3 32 34 33 44 162 549 280 88 53 50 46 42
4 32 33 33 45 174 558 268 86 52 50 46 40
5 33 34 33 47 189 569 255 84 52 50 46 39
6 34 34 34 48 199 577 244 82 52 50 45 38
7 34 34 35 49 217 567 234 80 52 50 45 37
8 34 34 35 50 232 567 224 77 52 49 47 36
9 34 34 36 52 244 549 212 75 52 49 45 37
10 34 32 35 54 256 528 204 73 51 49 45 38
11 34 32 35 57 266 508 197 72 51 49 44 38
12 33 33 36 58 271 495 186 71 52 50 43 38
13 34 33 36 60 287 505 179 69 52 50 43 38
14 34 33 35 62 297 494 172 69 51 49 43 38
15 35 33 35 65 313 483 163 67 51 50 42 38
16 34 33 36 68 336 480 156 66 51 49 42 38
17 35 33 37 70 353 479 151 64 51 48 41 36
18 35 33 36 74 369 465 144 63 51 48 42 36
19 35 33 37 79 385 455 138 63 51 48 42 37
20 35 33 39 85 405 444 132 62 52 48 42 37
21 34 33 40 92 421 429 127 61 52 48 41 37
22 34 33 39 99 431 419 123 60 51 49 41 37
23 33 32 41 107 439 406 117 61 51 49 41 37
24 34 32 41 113 459 400 112 61 50 48 41 36
25 34 32 41 117 476 386 109 59 49 48 42 36
26 33 32 42 121 494 369 106 58 49 48 40 35
27 32 32 42 124 518 354 103 58 49 47 40 36
28 33 33 41 130 526 341 100 57 50 47 40 36
29 32 34 41 136 539 330 98 56 49 47 40 35
30 33   41 144 544 316 96 55 50 46 41 35
31 33   43   545   96 55   47   33