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USGS Surface-Water 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 06040800 Madison River ab powerplant nr McAllister MT


Madison County, Montana
Hydrologic Unit Code 10020007
Latitude  45°29'11.74", Longitude 111°38'01.89" NAD83
Drainage area 2,212.7  square miles
Gage datum 4,690 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 2001-10-01 -> 2024-09-30)

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
1 342 304 298 340 627 2,100 1,150 445 409 377 432 396
2 339 298 317 370 677 2,150 1,030 452 424 366 449 399
3 331 286 301 393 647 2,150 960 391 388 369 460 400
4 331 280 323 391 679 2,140 1,020 382 358 370 487 420
5 349 283 313 384 681 2,230 1,030 367 360 385 523 426
6 364 302 295 380 646 2,290 912 344 354 393 552 415
7 354 323 301 370 711 2,360 841 345 346 374 522 415
8 349 330 293 363 791 2,270 797 324 351 370 496 420
9 345 323 295 391 777 2,090 747 290 363 369 487 426
10 357 311 301 408 735 2,000 748 299 375 361 492 405
11 364 296 302 407 763 1,920 723 307 367 351 533 397
12 309 276 300 389 813 1,800 688 298 403 367 538 405
13 287 264 299 399 857 1,800 668 318 420 395 522 406
14 295 272 323 390 873 1,740 627 323 430 393 518 405
15 294 284 345 410 955 1,620 675 297 449 362 495 420
16 322 301 352 464 1,070 1,580 649 272 438 350 439 427
17 295 305 329 499 1,130 1,610 648 283 452 345 440 415
18 308 289 311 503 1,180 1,610 625 287 451 347 443 414
19 324 263 304 483 1,270 1,670 555 277 445 346 434 427
20 368 267 317 473 1,410 1,580 603 299 453 379 410 442
21 391 280 323 513 1,520 1,460 630 284 474 442 415 430
22 402 269 311 544 1,520 1,450 638 279 484 473 406 405
23 348 297 307 560 1,550 1,410 606 276 420 459 407 396
24 311 303 305 574 1,630 1,420 569 265 417 510 415 383
25 284 301 293 581 1,680 1,380 546 260 405 548 413 353
26 291 271 304 609 1,670 1,290 495 263 395 523 412 336
27 318 270 313 606 1,650 1,260 524 255 394 485 408 351
28 330 291 309 578 1,690 1,180 527 276 406 475 413 354
29 349 359 303 559 1,750 1,210 494 269 403 427 417 367
30 354   295 587 1,920 1,180 475 277 382 417 402 360
31 330   298   1,970   460 340   417   351