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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.


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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 06208500 Clarks Fork Yellowstone River at Edgar MT


Carbon County, Montana
Hydrologic Unit Code 10070006
Latitude  45°27'56.57", Longitude 108°50'38.78" NAD83
Drainage area 2,045  square miles
Gage datum 3,460 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 1920-10-01 -> 2026-09-30)

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
1 374 349 365 386 936 3,810 3,370 902 414 536 548 478
2 376 354 359 393 962 3,840 3,280 860 417 523 548 479
3 378 357 355 395 978 3,830 3,180 846 402 525 538 482
4 379 361 355 394 1,020 3,980 3,130 817 406 531 544 469
5 378 368 354 407 1,080 4,130 3,090 783 398 561 546 455
6 377 360 362 411 1,170 4,410 2,980 734 387 556 548 444
7 379 355 370 413 1,290 4,600 2,840 696 417 557 545 438
8 379 357 380 423 1,410 4,580 2,710 659 434 558 545 435
9 377 355 386 439 1,440 4,470 2,560 631 394 561 547 434
10 378 363 382 451 1,480 4,350 2,440 599 403 556 540 432
11 372 372 388 454 1,560 4,320 2,380 584 423 556 537 431
12 366 363 387 460 1,650 4,250 2,330 579 428 563 536 434
13 367 361 379 474 1,700 4,280 2,230 570 425 562 531 431
14 365 356 379 488 1,770 4,470 2,110 543 429 558 534 427
15 365 354 379 516 1,900 4,390 2,010 532 435 556 531 420
16 352 355 379 535 2,010 4,440 1,920 523 452 559 528 416
17 351 358 397 545 2,190 4,490 1,800 510 450 570 522 407
18 351 358 383 568 2,370 4,350 1,710 482 449 568 524 402
19 352 356 379 593 2,480 4,260 1,620 467 501 562 517 401
20 353 358 378 620 2,590 4,230 1,550 465 493 564 517 402
21 354 359 375 636 2,730 4,140 1,470 496 502 565 506 406
22 354 357 373 676 2,840 4,100 1,380 481 521 562 502 404
23 356 356 383 719 2,890 4,140 1,290 480 510 557 495 406
24 350 352 398 746 2,990 4,050 1,230 460 508 553 500 398
25 348 356 393 745 3,120 3,990 1,170 438 506 551 504 395
26 350 358 380 789 3,190 3,930 1,130 428 505 556 502 391
27 354 361 382 794 3,270 3,930 1,090 429 505 548 498 382
28 357 364 384 816 3,400 3,780 1,030 417 510 550 486 379
29 355 352 385 859 3,600 3,610 995 409 509 544 481 383
30 353   384 876 3,750 3,480 972 407 521 549 474 379
31 351   381   3,790   951 399   548   376