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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 06191000 Gardner River near Mammoth, YNP


Park County, Montana
Hydrologic Unit Code 10070001
Latitude  44°59'32.44", Longitude 110°41'27.51" NAD83
Drainage area 199  square miles
Gage datum 5,623.97 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 1938-10-01 -> 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 99 93 91 100 235 762 453 185 138 128 119 106
2 98 93 90 100 245 766 435 182 138 129 117 105
3 97 94 91 99 265 775 423 179 137 129 117 104
4 98 93 91 102 287 789 410 178 135 128 118 103
5 97 93 92 103 303 815 394 177 135 128 116 102
6 98 93 92 105 321 832 381 174 136 128 116 102
7 97 93 92 107 344 817 368 170 134 128 116 103
8 97 92 93 110 365 789 357 168 134 126 116 101
9 98 92 92 111 385 783 344 166 135 126 114 100
10 98 92 92 113 396 768 332 164 134 125 113 102
11 98 92 92 113 408 744 321 162 134 126 112 101
12 96 93 92 115 420 728 310 160 134 126 111 102
13 97 93 92 119 441 739 296 158 133 125 111 101
14 97 93 93 125 455 722 286 157 134 124 112 101
15 96 92 93 127 484 708 275 155 133 126 111 102
16 95 92 94 130 527 703 265 153 132 127 110 101
17 96 92 94 135 551 687 258 151 133 125 110 100
18 94 92 94 140 565 671 250 150 133 124 109 99
19 96 92 95 144 584 663 242 150 135 123 110 100
20 95 92 95 152 603 643 237 151 134 123 110 100
21 95 93 96 161 620 622 231 150 134 122 108 100
22 95 92 96 170 635 616 226 149 133 122 105 99
23 96 91 96 180 635 593 220 148 132 122 106 99
24 95 92 97 184 644 580 215 146 130 121 109 99
25 95 92 97 188 652 562 210 145 129 121 109 99
26 94 91 97 193 671 546 207 143 128 121 106 100
27 94 91 97 196 685 540 203 142 130 120 106 98
28 94 92 97 205 709 517 200 141 130 120 106 98
29 93 90 97 214 742 491 197 141 129 120 104 99
30 93   98 223 748 473 193 140 128 119 105 99
31 93   99   754   188 140   122   99