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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 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 -> 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
1 374 349 363 385 934 3,780 3,390 909 417 539 547 478
2 376 354 357 392 961 3,800 3,300 866 420 526 547 479
3 378 358 354 395 976 3,800 3,190 853 405 527 538 482
4 379 362 354 394 1,020 3,970 3,150 824 409 534 543 469
5 379 368 353 407 1,080 4,130 3,110 789 401 563 545 455
6 378 361 362 411 1,160 4,420 3,000 740 390 557 547 444
7 380 355 370 414 1,290 4,620 2,860 701 421 557 544 438
8 380 357 380 423 1,400 4,600 2,730 664 437 559 544 435
9 378 356 387 439 1,430 4,470 2,580 636 396 562 546 434
10 378 363 383 451 1,470 4,350 2,460 604 406 557 540 432
11 372 373 388 454 1,530 4,320 2,390 588 426 557 537 431
12 366 364 387 460 1,620 4,250 2,350 583 432 563 536 434
13 367 361 379 472 1,660 4,270 2,250 574 428 561 531 431
14 365 356 379 486 1,740 4,470 2,120 547 432 557 533 427
15 365 354 379 514 1,880 4,390 2,020 536 438 554 531 420
16 352 355 379 534 2,000 4,450 1,930 527 455 557 527 415
17 351 359 397 542 2,190 4,500 1,810 514 453 567 521 407
18 351 359 383 564 2,370 4,360 1,720 485 452 566 523 401
19 353 357 379 592 2,480 4,270 1,630 471 505 560 517 401
20 355 358 378 619 2,590 4,240 1,560 468 496 562 517 402
21 356 359 376 636 2,740 4,150 1,480 500 506 563 506 406
22 355 356 374 676 2,860 4,110 1,390 484 525 560 502 404
23 356 354 384 720 2,910 4,150 1,300 484 513 555 495 405
24 350 350 398 748 3,010 4,070 1,230 463 510 551 500 398
25 349 353 394 746 3,130 4,020 1,180 441 509 550 504 395
26 350 355 381 792 3,200 3,960 1,140 432 508 554 502 391
27 355 359 382 796 3,270 3,960 1,100 433 508 547 498 382
28 358 362 383 815 3,400 3,810 1,040 420 513 549 486 379
29 356 352 384 856 3,590 3,630 1,000 412 512 542 481 383
30 354   382 874 3,740 3,500 980 410 525 548 474 379
31 352   379   3,760   959 402   547   376