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USGS Daily Statistics for Washington

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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 12449500 METHOW RIVER AT TWISP, WA


Okanogan County, Washington
Hydrologic Unit Code 17020008
Latitude  48°21'55", Longitude 120°06'54" NAD27
Drainage area 1,301  square miles
Gage datum 1,580 feet above NGVD29
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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 1918-10-01 -> 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
1 351 346 354 822 2,890 5,990 3,040 745 337 340 485 512
2 349 354 356 877 2,960 5,990 2,880 714 328 353 480 512
3 344 353 356 936 3,110 6,150 2,750 686 321 359 475 503
4 343 354 357 968 3,260 6,140 2,660 668 318 364 478 489
5 340 357 357 990 3,510 6,110 2,520 646 314 370 490 475
6 344 358 361 1,010 3,700 6,030 2,400 620 318 371 499 469
7 346 360 364 1,070 3,880 5,900 2,320 603 320 377 557 459
8 351 360 367 1,160 4,090 5,770 2,230 585 314 382 530 445
9 351 359 370 1,260 4,280 5,500 2,140 560 308 385 509 445
10 351 358 377 1,310 4,440 5,340 2,060 538 303 389 501 439
11 346 364 383 1,340 4,630 5,240 1,990 521 303 392 494 445
12 341 363 404 1,410 4,890 5,190 1,900 503 301 394 494 444
13 337 362 427 1,470 5,020 5,200 1,820 489 297 394 525 462
14 332 362 440 1,540 5,160 5,080 1,750 481 298 396 528 448
15 331 362 466 1,560 5,410 4,950 1,650 474 299 406 567 443
16 331 360 484 1,580 5,900 4,780 1,560 467 303 408 566 429
17 336 358 493 1,640 6,220 4,710 1,490 449 305 416 539 416
18 333 359 504 1,730 6,390 4,470 1,400 435 308 421 525 410
19 333 358 524 1,870 6,450 4,260 1,340 423 307 424 518 405
20 338 357 547 1,990 6,300 4,160 1,260 414 307 428 505 401
21 340 357 565 2,130 6,160 4,190 1,210 405 303 510 488 400
22 338 358 580 2,290 6,150 4,160 1,150 400 300 471 476 398
23 342 355 599 2,360 6,190 4,010 1,110 392 297 458 494 391
24 347 352 610 2,460 6,260 3,800 1,070 386 296 455 505 383
25 349 353 634 2,490 6,430 3,610 1,020 379 298 460 504 379
26 353 352 651 2,540 6,530 3,480 970 374 300 469 495 374
27 356 351 664 2,570 6,450 3,390 929 367 304 465 505 368
28 352 353 682 2,620 6,290 3,300 883 361 306 461 501 367
29 347 348 710 2,680 6,360 3,290 847 356 314 470 527 366
30 343   741 2,790 6,050 3,210 811 350 323 468 537 362
31 343   781   5,970   774 343   472   354