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USGS Surface-Water 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 -> 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 71 83 277 295 363 508 364 54 74 337 101 102
2 71 79 255 291 338 544 323 46 73 408 109 99
3 69 81 245 316 313 551 280 44 75 404 116 96
4 70 81 226 282 277 585 238 41 77 384 119 94
5 68 79 225 246 238 677 215 42 74 414 119 90
6 68 78 234 224 249 683 202 43 71 406 120 86
7 68 77 242 214 270 621 206 42 71 321 128 84
8 66 75 203 202 269 618 198 45 73 228 139 80
9 78 72 181 224 255 609 189 49 75 176 136 76
10 142 73 170 321 267 559 174 64 79 146 116 75
11 182 76 242 372 288 525 207 72 84 134 96 71
12 111 74 280 418 360 512 202 66 83 131 90 69
13 112 80 274 485 379 499 192 63 83 127 87 69
14 111 95 259 502 372 462 168 63 82 126 83 69
15 103 104 278 490 362 437 137 62 85 129 86 66
16 95 107 293 497 353 409 137 59 85 125 90 66
17 91 105 309 530 322 389 116 56 81 124 87 68
18 91 106 303 532 314 381 99 54 82 129 84 67
19 94 105 275 575 308 391 66 50 80 128 82 66
20 90 105 254 618 297 405 64 46 76 126 80 62
21 88 106 261 618 291 420 68 41 72 122 80 60
22 84 108 409 589 353 425 60 39 73 119 78 60
23 83 110 454 584 506 423 58 41 71 117 75 60
24 83 111 431 575 504 442 57 75 68 118 116 62
25 82 111 409 534 471 470 50 197 183 126 113 61
26 82 213 349 528 453 433 48 230 431 126 112 64
27 82 761 308 510 431 408 47 198 387 125 109 64
28 89 837 293 481 432 415 49 145 330 124 108 65
29 90 35 295 447 436 398 62 105 304 125 109 63
30 87   325 392 422 399 64 85 294 128 105 64
31 87   316   440   63 75   135   62