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USGS Daily Statistics for the Nation

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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 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 -> 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
1 332 298 294 336 596 2,010 1,080 420 385 355 405 384
2 329 292 313 365 641 2,070 977 431 398 345 421 386
3 321 280 294 387 614 2,060 908 375 374 347 431 388
4 324 272 314 385 643 2,050 950 367 370 348 489 407
5 340 275 304 378 647 2,140 955 349 359 362 534 413
6 353 294 287 374 618 2,190 850 335 334 370 561 402
7 343 324 293 364 677 2,260 784 326 326 353 533 402
8 339 325 285 358 752 2,190 745 306 331 349 484 407
9 334 314 287 384 736 2,030 703 275 342 347 456 414
10 346 302 292 401 699 1,940 710 283 353 340 460 392
11 352 288 293 400 745 1,870 687 291 349 331 498 394
12 303 269 292 383 813 1,750 664 282 380 346 502 403
13 281 257 291 392 851 1,740 654 301 394 374 488 392
14 287 265 314 384 864 1,650 619 305 403 370 483 392
15 286 290 335 403 939 1,550 655 282 421 341 462 407
16 313 311 341 447 1,040 1,500 621 259 410 331 412 413
17 287 310 320 479 1,090 1,530 629 269 424 325 412 401
18 300 289 302 481 1,130 1,510 605 273 422 327 415 401
19 315 260 296 462 1,230 1,560 541 264 417 327 420 413
20 357 260 308 453 1,350 1,480 582 283 425 357 397 428
21 379 283 314 490 1,440 1,370 604 270 444 415 402 416
22 390 273 303 518 1,430 1,360 610 264 453 443 394 392
23 339 296 298 533 1,460 1,320 585 262 394 430 394 384
24 306 296 297 547 1,530 1,330 550 252 392 477 402 371
25 278 293 285 553 1,580 1,290 529 277 381 512 400 342
26 283 271 295 579 1,570 1,210 472 317 371 488 399 326
27 309 272 304 576 1,560 1,200 501 286 370 454 395 340
28 320 287 302 550 1,610 1,120 495 299 381 445 400 344
29 339 359 297 533 1,680 1,140 464 256 379 401 404 356
30 343   287 559 1,860 1,110 445 264 359 391 389 349
31 320   292   1,910   432 321   391   341