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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 06079000 South Fork Sun River near Augusta MT


Lewis And Clark County, Montana
Hydrologic Unit Code 10030104
Latitude  47°37'42.99", Longitude 112°51'56.74" NAD83
Drainage area 251  square miles
Gage datum 4,730 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 1910-10-01 -> 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 81 73 82 205 811 2,020 748 167 103 87 125 106
2 80 71 83 202 845 1,990 708 162 102 88 122 119
3 81 67 83 200 900 1,960 650 158 100 89 122 129
4 80 69 82 207 949 1,910 619 159 101 88 123 137
5 81 74 79 207 1,090 1,860 581 151 103 87 133 124
6 83 75 78 203 1,260 1,730 541 150 103 86 142 123
7 83 77 77 215 1,320 1,630 513 161 103 86 137 126
8 81 79 77 238 1,240 1,580 472 156 102 89 130 109
9 79 85 75 262 1,220 1,570 442 148 105 90 126 107
10 78 93 75 282 1,180 1,540 412 143 104 91 126 105
11 78 98 77 291 1,130 1,420 392 139 102 94 116 101
12 77 97 80 293 1,090 1,390 363 132 100 94 114 98
13 77 98 82 291 1,110 1,460 342 130 99 94 113 101
14 74 100 91 279 1,130 1,450 328 127 97 95 111 98
15 77 102 148 262 1,250 1,310 318 128 97 96 115 95
16 78 104 213 248 1,470 1,230 299 124 96 101 116 97
17 75 105 185 254 1,610 1,280 283 123 94 108 111 96
18 76 100 170 270 1,690 1,310 272 119 93 104 115 98
19 75 94 194 297 1,760 1,470 255 117 93 103 115 98
20 70 93 176 387 1,780 1,300 247 115 92 104 113 94
21 71 89 170 446 1,710 1,220 240 118 92 104 108 92
22 69 89 169 515 1,600 1,180 231 118 95 106 108 90
23 69 89 172 576 1,600 1,130 225 116 94 105 123 88
24 69 87 172 562 1,710 1,060 216 116 91 105 148 90
25 70 86 169 533 1,800 990 208 112 90 103 129 91
26 71 84 165 524 1,990 922 200 109 90 106 118 90
27 73 83 167 542 2,100 859 198 107 91 111 114 87
28 73 83 185 580 2,040 817 191 104 91 111 108 85
29 73 75 194 652 2,010 796 184 101 91 110 107 84
30 74   192 755 1,980 788 177 101 90 111 111 84
31 72   200   2,010   171 102   118   84