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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 12143600 SF SNOQUALMIE RIVER AT EDGEWICK, WA


King County, Washington
Hydrologic Unit Code 17110010
Latitude  47°27'10", Longitude 121°43'00" NAD27
Drainage area 65.9  square miles
Gage datum 574.30 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 1961-10-01 -> 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
1 481 658 447 481 655 721 330 114 88 196 506 593
2 482 514 385 481 654 703 320 112 85 166 507 522
3 562 449 409 469 669 707 323 111 88 190 519 482
4 557 461 415 478 665 692 291 110 83 187 738 578
5 631 477 394 549 700 688 276 111 78 153 616 539
6 556 510 382 554 706 651 275 106 85 124 744 484
7 951 575 363 541 699 656 267 105 83 128 756 435
8 733 602 353 542 668 604 260 106 98 170 640 504
9 619 485 426 557 659 571 264 98 99 163 650 583
10 555 476 417 543 647 593 250 95 96 194 540 562
11 511 421 445 546 666 571 246 93 103 212 547 540
12 578 391 502 549 717 591 233 91 90 203 786 570
13 609 380 466 573 736 600 221 92 83 211 787 575
14 620 393 464 644 740 593 207 88 92 229 784 504
15 561 465 503 614 809 563 194 86 103 256 574 504
16 607 454 469 580 834 549 186 84 104 332 562 471
17 574 412 414 594 833 509 190 83 115 265 659 435
18 634 410 432 571 804 509 177 85 126 267 636 453
19 526 549 511 562 776 472 167 83 108 289 609 403
20 442 466 466 647 750 452 165 84 115 346 583 450
21 416 427 438 612 714 459 162 88 107 417 536 440
22 382 505 441 584 732 446 154 88 101 498 577 394
23 445 459 469 609 722 442 149 85 99 358 697 421
24 536 464 523 622 692 427 146 99 124 340 827 415
25 614 418 496 589 677 405 142 112 126 347 820 362
26 523 365 485 593 676 386 136 104 111 375 695 366
27 478 329 458 640 689 366 131 94 114 392 604 386
28 557 374 437 651 733 362 127 93 123 407 693 474
29 652 405 433 648 760 381 124 90 148 423 665 548
30 702   478 684 735 350 120 93 247 425 630 522
31 727   531   719   116 89   596   436