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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 -> 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
1 351 342 350 815 2,900 6,040 3,060 750 336 341 487 516
2 349 345 353 869 2,980 6,030 2,900 718 328 354 483 515
3 344 346 353 922 3,130 6,190 2,760 690 321 360 477 506
4 343 347 354 953 3,280 6,180 2,680 672 318 366 480 492
5 340 350 355 976 3,530 6,150 2,530 650 314 371 492 478
6 344 351 359 1,000 3,720 6,070 2,410 624 318 373 502 472
7 346 354 362 1,060 3,900 5,930 2,330 607 320 378 560 461
8 351 355 364 1,160 4,110 5,800 2,250 588 315 383 533 448
9 351 354 368 1,250 4,300 5,520 2,150 563 308 386 513 447
10 350 353 375 1,300 4,470 5,360 2,070 540 303 390 503 442
11 346 358 382 1,340 4,640 5,260 2,000 523 303 394 497 445
12 342 359 402 1,410 4,880 5,210 1,910 505 301 396 496 444
13 339 358 426 1,470 4,990 5,230 1,830 491 297 395 527 462
14 334 358 439 1,530 5,140 5,110 1,760 482 298 398 531 448
15 332 358 466 1,550 5,400 4,980 1,670 475 299 408 571 443
16 331 356 483 1,570 5,880 4,810 1,570 468 304 409 570 429
17 336 354 491 1,630 6,220 4,740 1,500 449 306 418 543 416
18 333 355 500 1,730 6,400 4,510 1,410 436 308 424 528 410
19 333 355 515 1,860 6,480 4,290 1,350 424 308 426 521 405
20 338 354 534 1,990 6,330 4,200 1,270 415 307 430 508 401
21 340 354 549 2,140 6,200 4,220 1,220 406 304 513 490 400
22 338 355 564 2,300 6,190 4,190 1,160 400 300 474 478 398
23 342 352 582 2,370 6,230 4,040 1,120 393 298 461 496 391
24 347 349 593 2,460 6,300 3,820 1,080 383 296 458 508 383
25 349 349 618 2,490 6,480 3,640 1,020 375 298 462 507 379
26 353 348 637 2,540 6,580 3,500 976 372 301 472 498 374
27 356 348 651 2,580 6,500 3,410 935 365 304 467 508 368
28 352 349 670 2,630 6,340 3,320 889 360 306 463 504 367
29 347 333 699 2,690 6,400 3,310 852 355 315 472 530 366
30 342   732 2,800 6,090 3,230 816 350 324 470 541 362
31 341   773   6,010   778 343   474   354