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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 12390700 Prospect Creek at Thompson Falls MT


Sanders County, Montana
Hydrologic Unit Code 17010213
Latitude  47°35'09.82", Longitude 115°21'18.36" NAD83
Drainage area 182  square miles
Gage datum 2,382.4 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 1956-10-01 -> 2024-09-30)

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 90 131 168 340 626 738 255 99 67 53 54 119
2 91 129 172 343 631 733 243 97 67 52 55 114
3 89 123 173 348 648 734 233 95 65 52 57 119
4 87 120 172 349 663 717 223 94 65 52 60 126
5 86 126 170 353 687 696 214 92 64 51 60 128
6 86 128 170 380 712 681 205 91 64 51 59 115
7 88 128 171 404 725 655 197 90 63 51 61 105
8 91 144 171 416 723 630 190 88 63 51 65 98
9 94 191 172 426 734 608 182 87 62 51 63 94
10 102 167 185 431 745 575 176 85 61 51 62 93
11 101 148 190 429 755 548 168 85 61 51 64 94
12 98 143 197 432 757 532 162 84 61 53 70 98
13 99 137 209 438 764 523 157 83 60 54 70 102
14 98 132 211 463 771 513 153 81 60 53 68 105
15 111 130 226 469 790 507 148 81 59 52 67 105
16 173 134 249 461 818 506 143 80 59 52 67 102
17 166 138 240 458 852 500 138 78 58 51 67 100
18 146 141 240 461 862 473 135 77 58 51 67 98
19 133 150 269 466 848 445 131 76 58 51 65 96
20 128 173 260 493 840 424 128 76 57 50 66 93
21 122 187 256 527 830 404 124 75 57 50 68 91
22 118 188 250 531 819 387 121 74 56 51 72 90
23 113 177 255 541 808 372 118 73 56 50 79 99
24 110 171 260 580 807 356 115 73 55 50 95 102
25 111 172 264 591 805 339 113 72 55 50 119 99
26 112 172 271 568 809 320 110 71 54 51 118 111
27 110 167 275 557 804 302 108 70 54 51 106 120
28 109 166 283 568 792 287 105 70 53 52 97 107
29 107 214 293 574 779 278 103 69 53 52 101 96
30 109   307 594 775 267 102 68 53 53 131 92
31 128   328   760   100 68   54   90