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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 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 -> 2021-09-30)

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 64 79 82 169 349 552 205 84 48 61 78 69
2 62 71 88 167 347 536 194 82 48 61 79 78
3 62 63 89 159 351 541 181 78 47 63 80 84
4 63 62 93 156 368 538 194 75 46 65 80 81
5 75 63 95 168 376 525 182 73 47 66 80 73
6 69 63 91 198 382 527 171 71 47 67 79 68
7 65 63 95 211 402 514 163 69 47 68 79 65
8 66 70 109 206 403 505 157 70 49 70 81 64
9 65 113 111 211 406 483 151 65 51 70 79 67
10 64 80 128 209 431 457 157 61 51 71 77 67
11 64 73 121 215 458 448 152 60 52 72 76 67
12 63 71 114 226 455 431 145 60 55 74 76 66
13 63 74 118 225 451 427 146 59 55 75 77 67
14 62 76 123 226 463 404 146 58 53 77 75 66
15 75 80 121 228 487 389 141 57 53 78 74 67
16 81 88 129 225 509 384 136 56 54 79 75 66
17 71 99 132 234 531 396 134 56 54 79 75 65
18 67 93 136 243 557 386 130 54 56 80 75 64
19 66 101 134 249 566 408 123 51 57 80 74 62
20 65 101 131 267 563 405 119 52 58 82 73 61
21 62 106 136 282 577 382 115 52 58 82 72 62
22 62 94 144 302 665 347 111 53 58 81 72 62
23 62 84 156 322 628 324 106 54 59 79 70 60
24 61 86 152 332 635 302 103 55 59 79 72 61
25 61 94 142 340 654 277 99 53 58 79 72 68
26 62 93 145 338 633 262 95 51 58 79 71 73
27 63 82 148 335 608 249 97 50 59 79 70 64
28 63 81 142 341 585 231 93 49 59 78 70 63
29 63 80 136 346 572 219 90 48 59 78 71 61
30 62   139 352 566 213 87 48 61 77 69 61
31 67   159   560   88 47   78   62