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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 12365700 Stillwater River at Lawrence Park, at Kalispell


Flathead County, Montana
Hydrologic Unit Code 17010210
Latitude  48°13'02.10", Longitude 114°18'49.45" NAD83
Drainage area 596  square miles
Gage datum 2,940 feet above NAVD88
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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 2006-10-01 -> 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 95 89 107 367 959 1,020 579 185 111 95 116 110
2 95 87 109 381 963 999 560 181 110 95 120 111
3 94 89 112 393 962 986 543 180 108 96 123 113
4 93 89 114 406 962 972 525 177 107 95 124 112
5 96 95 122 416 970 962 506 172 106 96 125 112
6 97 97 121 429 987 953 483 167 105 96 124 108
7 98 96 121 440 1,020 941 460 164 105 95 125 112
8 99 95 121 452 1,070 931 439 159 104 95 125 114
9 99 94 130 472 1,120 919 419 156 104 95 125 116
10 97 96 157 495 1,150 915 399 153 105 96 125 117
11 94 97 171 518 1,160 913 381 152 105 97 123 117
12 91 99 184 533 1,150 901 364 149 104 97 118 120
13 92 99 183 547 1,140 876 348 146 102 97 118 119
14 93 101 182 557 1,130 850 335 144 101 97 120 117
15 91 102 192 569 1,130 830 327 143 100 97 119 115
16 90 102 198 575 1,130 816 317 141 97 99 119 111
17 92 100 205 579 1,130 813 307 138 96 99 122 109
18 94 99 212 583 1,150 815 298 136 95 100 122 106
19 95 98 229 588 1,170 820 289 133 96 100 121 105
20 94 98 243 594 1,180 825 278 131 97 101 123 108
21 96 99 262 609 1,180 831 268 128 98 101 121 107
22 93 98 276 636 1,160 821 257 127 98 102 117 105
23 93 96 289 669 1,150 802 248 126 98 104 119 105
24 93 95 292 709 1,150 772 241 124 99 105 120 101
25 93 99 291 757 1,150 746 232 121 98 106 119 99
26 92 102 296 806 1,160 719 224 120 99 105 119 100
27 89 106 307 854 1,160 690 217 117 98 107 118 101
28 88 108 316 895 1,150 662 209 116 98 108 116 102
29 86 95 324 927 1,130 631 203 114 96 109 116 101
30 88   338 947 1,100 604 195 113 95 109 110 98
31 90   354   1,060   190 112   113   95