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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 76 222 478 202 498 673 413 454 287 131 93 83
2 78 228 468 184 492 630 450 422 286 130 92 83
3 78 219 534 169 484 735 453 378 290 128 97 95
4 78 205 507 162 458 1,430 467 348 288 127 98 103
5 77 185 354 427 397 1,140 498 336 297 123 95 115
6 75 173 458 1,360 352 833 458 344 310 115 92 123
7 72 163 493 1,520 352 698 394 351 315 107 92 128
8 69 150 381 1,090 632 649 381 345 259 107 88 124
9 63 144 336 820 1,160 615 372 339 237 104 86 110
10 57 139 308 639 1,090 643 393 327 215 109 80 95
11 51 130 313 510 1,170 664 377 317 183 100 89 86
12 46 130 409 425 1,190 617 462 317 146 102 97 71
13 42 128 710 365 1,190 596 506 327 130 101 93 49
14 38 114 1,640 338 1,260 560 561 316 132 106 93 70
15 41 99 1,870 305 1,200 561 591 297 131 111 88 67
16 51 85 1,530 250 1,100 596 565 283 125 110 88 65
17 62 77 1,180 214 1,000 617 535 277 122 105 94 68
18 72 81 1,030 199 924 630 524 292 297 104 97 70
19 75 93 1,090 2,010 862 614 526 298 570 104 103 70
20 81 100 1,240 1,990 801 569 519 291 441 103 96 69
21 90 114 1,350 1,690 789 574 520 290 333 98 90 68
22 96 124 1,070 1,250 797 551 530 297 234 98 89 64
23 99 134 641 919 870 491 541 294 189 81 88 60
24 98 202 374 736 924 450 546 287 182 80 86 56
25 97 302 375 634 924 376 542 286 168 82 78 53
26 99 584 304 557 915 327 515 291 151 86 82 52
27 104 609 271 496 900 306 461 291 142 76 88 55
28 123 520 265 481 865 308 435 286 136 66 79 60
29 154 478 261 522 876 363 411 283 137 86 77 65
30 183   229 528 815 383 405 291 132 81 84 69
31 207   215   739   424 297   88   73