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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 -> 2023-09-30)

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
1 351 343 352 821 2,840 6,070 3,080 756 338 342 493 521
2 349 347 354 875 2,900 6,070 2,930 724 329 355 488 521
3 343 347 355 930 3,010 6,230 2,790 696 323 362 481 512
4 343 348 356 961 3,130 6,230 2,710 678 320 367 484 497
5 340 352 356 984 3,340 6,200 2,560 655 316 374 493 482
6 344 353 361 1,010 3,550 6,120 2,440 629 320 376 504 469
7 346 355 364 1,070 3,790 5,980 2,350 612 322 382 564 457
8 352 356 366 1,170 4,040 5,850 2,270 593 316 387 537 444
9 351 355 370 1,270 4,250 5,570 2,170 567 310 390 517 445
10 351 354 377 1,310 4,420 5,390 2,090 544 305 394 508 439
11 347 360 384 1,350 4,600 5,300 2,020 527 305 398 501 443
12 343 360 405 1,420 4,840 5,250 1,930 509 303 399 499 442
13 340 359 429 1,480 4,940 5,270 1,840 494 299 399 532 461
14 334 360 442 1,550 5,060 5,150 1,770 486 300 401 536 447
15 332 359 469 1,560 5,310 5,030 1,680 478 301 412 577 442
16 332 358 487 1,580 5,790 4,860 1,580 472 305 413 576 428
17 337 356 495 1,640 6,130 4,790 1,520 453 308 422 548 416
18 334 357 503 1,740 6,330 4,550 1,420 439 310 428 534 409
19 334 356 518 1,880 6,410 4,330 1,360 427 310 430 526 405
20 339 355 537 2,010 6,270 4,240 1,280 418 309 435 513 401
21 342 355 552 2,160 6,140 4,260 1,230 409 305 520 495 400
22 339 356 568 2,320 6,150 4,230 1,170 403 302 480 482 398
23 343 354 586 2,390 6,230 4,080 1,130 395 300 466 501 391
24 348 351 596 2,490 6,310 3,860 1,090 386 298 463 513 383
25 350 351 622 2,510 6,490 3,670 1,030 378 300 467 512 379
26 355 350 642 2,560 6,610 3,530 985 374 301 477 503 373
27 357 350 656 2,590 6,530 3,440 943 367 305 473 513 367
28 354 351 675 2,630 6,360 3,350 896 362 307 468 510 366
29 348 333 704 2,680 6,430 3,340 860 357 316 478 537 366
30 344   737 2,760 6,120 3,260 822 351 325 475 547 361
31 343   778   6,040   784 344   480   354