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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 May 12, 2020 - USGS water-resources monitoring will be discontinued May 31, 2020 at the following site:
  • 06088500 Muddy Creek near Vaughn, Montana (POR: 82 years)
USGS monitoring activities at this site were funded by partner entities and USGS Cooperative Matching Funds. Lack of partner funding for this site will result in discontinuation of all USGS monitoring activities. Historical data will continue to be available.

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 12324590 Little Blackfoot River near Garrison MT


Powell County, Montana
Hydrologic Unit Code 17010201
Latitude  46°31'10.14", Longitude 112°47'35.42" NAD83
Drainage area 414  square miles
Gage datum 4,343.97 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 1971-10-01 -> 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 63 79 82 170 342 551 196 83 48 61 77 69
2 61 69 87 168 340 536 187 80 48 61 78 78
3 61 63 89 160 345 542 175 77 47 63 79 83
4 63 62 93 157 363 540 189 74 47 65 79 81
5 75 63 95 170 373 527 176 72 47 66 79 72
6 69 62 91 199 380 529 166 70 47 68 78 67
7 64 62 93 212 400 513 158 68 47 68 78 64
8 65 70 106 207 401 500 152 69 49 70 80 63
9 65 114 109 211 405 477 146 64 52 70 79 66
10 64 80 128 209 431 456 153 61 52 71 77 66
11 64 73 120 214 459 448 148 60 52 72 76 66
12 63 71 113 227 455 430 142 59 55 74 76 65
13 62 73 118 226 452 427 143 58 55 75 76 66
14 62 76 124 227 464 404 143 58 53 77 74 65
15 75 79 123 228 488 389 138 56 53 78 73 66
16 81 88 131 226 510 383 133 55 54 78 74 65
17 71 99 134 235 534 395 132 56 54 78 74 65
18 66 94 137 243 559 380 127 54 56 78 73 64
19 66 101 135 250 567 403 121 51 58 78 73 61
20 64 103 132 268 554 402 117 52 58 79 72 61
21 62 108 137 283 559 379 113 52 59 79 71 61
22 61 94 145 303 652 344 109 53 58 79 71 61
23 61 84 157 322 618 321 104 54 59 78 69 59
24 60 86 153 331 627 300 101 56 59 78 71 60
25 60 94 143 340 649 275 97 53 58 78 71 67
26 62 93 146 337 629 260 94 51 58 78 71 73
27 63 82 149 334 605 248 96 50 59 78 70 63
28 63 81 143 340 583 228 92 49 59 78 70 62
29 63 75 138 344 570 212 89 48 59 78 70 61
30 62   140 349 564 201 85 48 60 77 68 60
31 67   160   558   86 48   77   62