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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 06080900 Sun River bl Diversion Dam nr Augusta MT


Lewis And Clark County, Montana
Hydrologic Unit Code 10030104
Latitude  47°37'06.62", Longitude 112°41'31.40" NAD83
Drainage area 610  square miles
Gage datum 4,363.27 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 1967-10-01 -> 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
1 141 142 134 219 538 2,200 683 136 179 135 138 153
2 147 138 133 221 552 2,110 661 136 177 142 138 155
3 149 137 130 225 563 2,080 673 141 175 144 135 156
4 149 137 132 233 622 2,080 663 146 166 145 134 158
5 146 137 133 242 732 2,160 649 146 163 143 135 159
6 147 136 133 246 851 2,400 614 146 163 140 138 157
7 147 138 134 238 883 2,370 559 147 164 136 147 157
8 146 141 133 238 888 2,180 501 147 163 140 151 155
9 146 141 137 237 911 2,180 451 145 163 143 149 155
10 150 140 137 230 955 1,990 420 146 165 143 148 154
11 150 139 138 226 1,080 1,800 375 138 168 141 148 151
12 147 139 139 229 1,160 1,690 312 148 164 140 147 147
13 147 140 145 240 1,260 1,740 258 135 156 142 148 147
14 145 140 143 246 1,360 1,800 208 134 155 144 146 147
15 146 139 143 276 1,320 1,710 194 137 146 144 146 142
16 149 143 144 301 1,280 1,630 192 139 138 145 146 134
17 151 141 147 286 1,320 1,540 191 138 137 148 149 132
18 151 137 149 283 1,390 1,550 190 137 136 158 153 133
19 148 136 153 271 1,390 2,680 189 138 131 155 154 134
20 147 137 154 248 1,370 2,170 184 141 126 155 152 140
21 144 137 151 244 1,390 1,750 171 145 125 154 154 141
22 145 136 154 247 1,410 1,440 157 152 127 155 155 140
23 146 135 155 266 1,460 1,360 148 162 125 156 156 140
24 147 138 154 317 1,510 1,320 141 170 126 155 157 142
25 146 132 158 358 1,620 1,210 135 178 129 153 157 144
26 141 133 160 362 1,840 1,090 130 177 124 148 154 144
27 139 134 201 392 2,020 933 126 175 123 133 150 144
28 136 135 201 434 2,220 782 125 174 122 132 149 144
29 136 135 205 462 2,170 705 126 176 124 135 149 143
30 134   205 501 2,120 669 131 183 127 138 152 144
31 142   218   2,180   133 181   138   142