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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 06155030 Milk River near Dodson MT


Phillips County, Montana
Hydrologic Unit Code 10050004
Latitude  48°24'10.00", Longitude 108°17'38.74" NAD83
Drainage area 11,134  square miles
Contributing drainage area 10,442  square miles
Gage datum 2,250 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 1981-10-01 -> 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 71 83 271 287 353 501 354 53 72 331 101 102
2 71 79 249 283 328 534 313 45 72 400 109 99
3 69 81 239 307 304 540 272 43 73 396 116 96
4 70 81 221 274 269 571 231 40 75 376 119 94
5 68 79 225 239 231 658 209 41 72 405 119 90
6 68 78 235 217 242 663 196 42 69 398 120 86
7 68 77 240 220 262 602 200 41 69 315 128 84
8 66 75 204 227 261 600 192 44 71 225 139 80
9 78 72 184 244 251 591 184 47 73 174 136 76
10 142 73 172 330 301 542 169 62 77 145 116 75
11 182 76 241 381 339 509 201 70 84 133 96 71
12 111 74 277 422 401 496 196 64 85 130 90 69
13 112 80 272 484 415 484 187 61 86 127 87 69
14 111 95 257 496 404 448 163 61 84 126 83 69
15 103 104 288 479 393 424 134 61 85 129 86 66
16 95 107 315 483 382 397 133 58 84 125 90 66
17 91 105 331 514 345 378 113 55 81 124 87 68
18 91 106 320 516 336 371 97 52 82 129 84 67
19 94 105 289 558 332 382 64 49 81 128 82 66
20 90 105 266 599 319 396 62 45 85 126 80 62
21 88 106 274 600 310 410 66 40 96 122 80 60
22 84 108 425 571 366 415 59 38 92 119 78 60
23 83 110 468 567 510 412 57 40 84 117 75 60
24 83 111 436 558 509 429 55 73 78 118 116 62
25 82 111 405 518 481 456 49 191 189 126 113 61
26 82 213 343 512 466 420 47 223 427 128 112 64
27 82 761 301 495 444 396 46 193 382 126 109 64
28 89 837 286 467 442 403 47 141 326 124 108 65
29 90 35 288 433 442 387 61 102 300 125 109 63
30 87   316 380 425 387 62 82 290 128 105 64
31 87   308   438   61 73   134   62