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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
1 374 349 365 386 936 3,810 3,390 909 417 539 547 478
2 376 354 359 393 962 3,800 3,300 866 420 526 547 479
3 378 357 355 395 978 3,800 3,190 853 405 527 538 482
4 379 361 355 394 1,020 3,970 3,150 824 409 534 543 469
5 378 368 354 407 1,080 4,130 3,110 789 401 563 545 455
6 377 360 362 411 1,170 4,420 3,000 740 390 557 547 444
7 379 355 370 413 1,290 4,620 2,860 701 421 557 544 438
8 379 357 380 423 1,410 4,600 2,730 664 437 559 544 435
9 377 355 386 439 1,440 4,470 2,580 636 396 562 546 434
10 378 363 382 451 1,480 4,350 2,460 604 406 557 540 432
11 372 372 388 454 1,560 4,320 2,390 588 426 557 537 431
12 366 363 387 460 1,650 4,250 2,350 583 432 563 536 434
13 367 361 379 474 1,700 4,270 2,250 574 428 561 531 431
14 365 356 379 488 1,770 4,470 2,120 547 432 557 533 427
15 365 354 379 516 1,900 4,390 2,020 536 438 554 531 420
16 352 355 379 535 2,010 4,450 1,930 527 455 557 527 416
17 351 358 397 545 2,190 4,500 1,810 514 453 567 521 407
18 351 358 383 568 2,370 4,360 1,720 485 452 566 523 402
19 352 356 379 593 2,480 4,270 1,630 471 505 560 517 401
20 353 358 378 620 2,590 4,240 1,560 468 496 562 517 402
21 354 359 375 636 2,730 4,150 1,480 500 506 563 506 406
22 354 357 373 676 2,840 4,110 1,390 484 525 560 502 404
23 356 356 383 719 2,890 4,150 1,300 484 513 555 495 406
24 350 352 398 746 2,990 4,070 1,230 463 510 551 500 398
25 348 356 393 745 3,120 4,020 1,180 441 509 550 504 395
26 350 358 380 789 3,190 3,960 1,140 432 508 554 502 391
27 354 361 382 794 3,270 3,960 1,100 433 508 547 498 382
28 357 364 384 816 3,400 3,810 1,040 420 513 549 486 379
29 355 352 385 859 3,600 3,630 1,000 412 512 542 481 383
30 353   384 876 3,750 3,500 980 410 525 548 474 379
31 351   381   3,790   959 402   547   376