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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 06205000 Stillwater River near Absarokee, MT


Stillwater County, Montana
Hydrologic Unit Code 10070005
Latitude  45°32'12.27", Longitude 109°25'19.40" NAD83
Drainage area 936  square miles
Gage datum 3,957 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 1934-10-01 -> 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
1 293 277 272 315 649 2,770 3,310 1,250 613 562 469 365
2 289 278 268 312 671 2,810 3,250 1,210 610 554 462 365
3 290 278 268 307 698 2,910 3,240 1,160 601 551 463 368
4 289 272 264 307 737 3,140 3,190 1,110 591 552 464 364
5 294 275 265 310 781 3,330 3,130 1,070 578 548 460 349
6 295 272 283 322 811 3,560 3,080 1,040 575 548 448 343
7 295 267 280 327 883 3,580 3,020 992 575 546 443 344
8 294 264 278 331 932 3,580 2,960 960 572 543 445 341
9 297 264 295 342 970 3,580 2,850 936 570 540 440 331
10 297 263 295 354 1,020 3,550 2,810 912 571 539 434 331
11 295 270 286 380 1,100 3,450 2,740 890 580 537 424 336
12 294 277 282 382 1,130 3,370 2,640 868 588 538 419 337
13 298 278 277 377 1,220 3,520 2,550 849 590 533 419 333
14 301 271 280 384 1,240 3,590 2,440 829 585 526 419 335
15 296 266 283 391 1,310 3,570 2,370 805 590 530 419 333
16 296 267 290 390 1,360 3,620 2,270 788 588 532 416 321
17 298 270 294 398 1,480 3,660 2,160 764 585 525 414 320
18 295 272 301 407 1,550 3,590 2,060 743 590 522 409 317
19 292 273 296 422 1,620 3,610 1,980 732 592 513 406 319
20 290 274 295 439 1,750 3,610 1,920 736 591 513 399 319
21 290 275 298 462 1,880 3,600 1,850 726 598 510 391 322
22 285 272 310 483 1,950 3,650 1,760 713 596 505 384 315
23 286 269 315 519 2,000 3,640 1,670 703 587 499 385 312
24 286 269 319 534 2,060 3,660 1,620 693 581 494 389 311
25 280 278 316 551 2,180 3,640 1,560 677 570 490 387 309
26 280 273 309 563 2,250 3,610 1,520 662 566 486 376 304
27 279 276 303 573 2,360 3,550 1,460 652 566 481 371 301
28 277 279 311 591 2,510 3,490 1,400 639 563 472 372 300
29 279 309 328 599 2,700 3,370 1,350 627 559 473 366 304
30 280   328 619 2,740 3,310 1,330 622 557 466 364 299
31 276   315   2,760   1,280 622   474   298