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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 12338300 NF Blackfoot R ab Dry Gulch nr Ovando MT


Powell County, Montana
Hydrologic Unit Code 17010203
Latitude  46°58'46.18", Longitude 113°05'31.87" NAD83
Drainage area 310  square miles
Gage datum 4,060 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 1997-10-01 -> 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
1 113 104 98 172 757 1,620 764 271 190 160 153 135
2 113 103 98 174 814 1,620 721 267 188 160 152 135
3 112 102 98 173 895 1,620 683 262 186 159 150 135
4 111 102 98 174 934 1,600 669 256 184 158 150 133
5 112 102 98 179 976 1,610 632 256 183 158 150 131
6 110 101 98 186 1,040 1,630 597 251 181 157 149 130
7 109 101 97 196 1,070 1,560 573 248 181 156 160 129
8 110 102 98 214 1,070 1,470 552 244 179 155 193 129
9 109 102 97 225 1,050 1,390 529 241 179 154 170 128
10 109 103 98 232 1,050 1,310 500 236 179 154 161 128
11 108 102 99 234 1,030 1,260 480 233 177 153 154 129
12 107 102 102 249 1,040 1,190 464 229 176 154 151 129
13 106 102 105 273 1,140 1,210 449 228 174 153 156 128
14 106 102 106 290 1,220 1,230 436 224 173 152 155 127
15 105 102 111 296 1,240 1,220 418 221 172 152 152 126
16 105 102 133 287 1,350 1,200 405 218 171 152 151 123
17 106 101 131 285 1,450 1,220 390 216 169 153 149 122
18 107 101 130 298 1,530 1,200 378 213 169 151 148 121
19 107 100 133 316 1,600 1,160 366 211 169 151 147 121
20 108 100 135 356 1,680 1,140 355 209 168 151 146 121
21 108 100 135 418 1,660 1,100 344 209 167 151 145 121
22 108 99 136 490 1,610 1,080 334 207 166 150 144 120
23 107 99 139 568 1,580 1,080 326 205 166 150 143 118
24 107 98 140 608 1,620 1,030 317 204 165 150 143 118
25 106 98 144 642 1,650 978 308 202 163 149 142 118
26 106 97 147 640 1,700 926 301 200 161 148 140 117
27 105 97 148 658 1,740 880 297 198 160 148 138 116
28 105 97 152 646 1,720 847 293 195 159 148 138 116
29 104 92 154 656 1,720 832 286 193 159 148 137 116
30 103   156 708 1,690 817 280 191 159 148 135 116
31 103   164   1,660   275 190   150   115