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USGS Surface-Water 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 06026210 Big Hole River near Glen MT


Madison County, Montana
Hydrologic Unit Code 10020004
Latitude  45°26'24.34", Longitude 112°33'21.93" NAD83
Drainage area 2,668  square miles
Gage datum 4,850 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 1997-10-01 -> 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
1 345 330 482 833 1,900 4,080 2,020 447 267 414 524 365
2 344 331 485 922 1,900 4,080 1,890 433 267 428 514 409
3 339 332 494 897 1,920 4,040 1,770 416 266 430 550 421
4 359 334 502 903 1,960 4,020 1,690 405 268 430 564 441
5 366 335 494 963 2,010 4,040 1,610 394 268 436 574 462
6 352 336 502 990 2,060 4,070 1,500 384 279 446 577 450
7 368 338 498 994 2,150 4,030 1,390 379 284 450 532 449
8 354 338 503 1,010 2,270 4,080 1,320 385 284 453 518 446
9 358 338 498 1,060 2,320 4,020 1,260 381 285 457 508 429
10 357 338 468 1,180 2,320 3,940 1,200 367 296 456 483 417
11 357 334 486 1,290 2,320 3,840 1,150 358 303 461 484 434
12 345 331 509 1,340 2,290 3,640 1,100 346 300 466 490 429
13 306 330 523 1,360 2,310 3,450 1,070 335 296 470 479 407
14 303 325 559 1,390 2,360 3,340 1,030 326 296 482 459 387
15 311 312 590 1,410 2,430 3,230 1,000 316 297 490 450 367
16 306 295 655 1,370 2,570 3,150 957 310 302 492 437 359
17 307 272 708 1,310 2,790 3,230 921 303 308 496 436 354
18 305 269 721 1,310 3,000 3,320 865 294 316 499 424 359
19 300 272 747 1,380 3,160 3,410 805 284 324 503 416 381
20 308 277 799 1,490 3,380 3,290 748 277 332 509 408 389
21 309 284 805 1,540 3,510 3,100 719 274 343 514 392 394
22 305 286 761 1,660 3,570 2,920 678 279 351 515 379 396
23 297 290 741 1,800 3,620 2,840 633 284 356 515 419 408
24 297 298 729 1,850 3,660 2,730 601 293 364 517 434 374
25 300 308 705 1,850 3,800 2,580 572 292 368 515 368 347
26 305 317 701 1,820 3,820 2,460 550 287 374 510 327 326
27 313 318 705 1,820 3,880 2,350 525 282 375 520 362 323
28 319 422 723 1,820 3,910 2,230 513 277 373 518 379 343
29 323 348 721 1,850 4,000 2,160 497 274 374 511 377 341
30 325   717 1,880 4,040 2,100 480 271 384 511 365 342
31 327   756   4,050   462 270   533   348