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USGS Daily Statistics for the Nation

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 06153800 Milk River at Merrill Rd, nr Harlem, MT


Blaine County, Montana
Hydrologic Unit Code 10050004
Latitude  48°31'27.5", Longitude 108°51'18.6" NAD83
Drainage area 8,924.7  square miles
Gage datum 2,353 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 2022-10-01 -> 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 96 171 1,070 239 429 556 322 351 287 131 99 97
2 97 173 1,180 224 424 524 345 338 286 130 97 96
3 97 169 1,230 209 415 586 346 326 290 128 101 102
4 96 161 1,090 204 392 1,050 353 289 288 127 103 105
5 95 149 872 341 352 854 374 276 297 123 102 110
6 95 142 784 809 324 640 348 335 310 115 103 115
7 95 137 684 887 332 547 302 348 315 107 104 119
8 94 129 526 673 519 521 291 319 259 107 104 119
9 92 126 433 533 867 508 285 339 237 104 103 114
10 90 122 383 442 816 519 296 406 215 109 99 107
11 87 118 361 378 872 531 283 435 183 100 105 103
12 85 118 412 340 886 488 336 364 146 102 111 95
13 84 118 561 311 880 474 363 334 130 101 110 83
14 83 112 1,000 301 921 448 399 299 132 106 110 94
15 85 105 1,100 293 879 467 420 271 131 111 106 92
16 91 98 924 262 808 491 401 254 125 110 105 90
17 97 91 734 245 738 495 382 244 122 105 111 91
18 101 91 654 261 686 495 378 250 297 104 112 91
19 101 98 679 1,450 646 475 383 251 570 104 112 91
20 102 105 746 1,440 607 439 377 291 441 103 104 90
21 104 116 794 1,230 602 441 376 290 333 98 97 88
22 107 126 642 941 600 426 386 297 234 98 97 88
23 108 159 419 720 661 391 394 294 189 97 96 86
24 107 1,040 283 596 758 364 399 287 182 94 94 85
25 108 1,260 284 527 822 314 398 286 168 97 88 84
26 110 1,200 246 474 808 274 380 291 151 100 95 85
27 113 1,160 239 431 739 256 343 291 142 91 99 86
28 122 1,090 231 419 682 257 332 286 136 87 95 89
29 138 478 234 446 680 292 377 283 137 98 94 92
30 152   251 448 650 303 354 291 132 95 99 94
31 164   245   597   334 297   96   95