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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 06172310 Milk River at Tampico MT


Valley County, Montana
Hydrologic Unit Code 10050012
Latitude  48°18'28.46", Longitude 106°49'20.34" NAD83
Drainage area 21,341  square miles
Contributing drainage area 19,142  square miles
Gage datum 2,110 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 1973-10-01 -> 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
1 130 259 345 1,520 880 940 868 246 307 217 248 171
2 129 221 360 1,460 825 1,020 810 194 267 218 259 172
3 129 179 393 1,360 753 1,130 828 177 245 223 261 175
4 125 167 415 1,250 723 1,160 788 175 219 222 315 177
5 122 156 425 1,240 675 1,160 779 173 210 282 259 178
6 121 154 447 1,220 622 1,090 747 169 228 376 221 174
7 119 151 480 1,180 653 1,070 699 169 241 394 218 168
8 118 149 495 1,110 685 1,120 657 178 231 405 216 160
9 116 147 530 1,030 678 1,160 623 190 213 422 226 161
10 116 145 555 1,020 672 1,290 578 195 220 436 204 162
11 119 145 629 1,140 710 1,290 543 199 231 425 224 159
12 115 147 724 1,240 756 1,220 526 177 231 360 224 155
13 119 152 762 1,390 801 1,200 458 175 242 312 216 149
14 130 150 818 1,540 801 1,140 460 191 238 307 215 145
15 153 151 850 1,640 789 1,060 397 211 229 300 213 143
16 192 153 940 1,650 807 976 354 227 232 299 194 140
17 215 157 1,040 1,630 760 935 362 223 241 293 191 141
18 208 161 1,160 1,590 704 959 340 228 255 291 191 142
19 196 162 1,300 1,540 666 961 318 216 228 285 205 143
20 202 162 1,320 1,480 648 963 299 183 226 271 184 144
21 194 167 1,370 1,400 684 960 292 177 230 276 188 142
22 231 176 1,480 1,330 779 912 277 210 231 279 207 137
23 317 188 1,530 1,270 830 852 301 211 231 273 183 134
24 382 204 1,520 1,220 886 912 296 253 237 272 181 132
25 405 216 1,540 1,170 972 921 286 319 216 261 180 135
26 376 210 1,700 1,100 1,020 885 250 353 210 247 183 134
27 365 207 1,750 1,040 941 824 223 357 214 240 164 137
28 335 197 1,690 1,000 924 837 252 360 200 244 170 138
29 307 230 1,620 984 955 817 274 355 187 245 173 138
30 275   1,620 950 925 883 292 352 198 242 169 136
31 257   1,520   905   292 337   242   132