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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 12031000 CHEHALIS RIVER AT PORTER, WA


Grays Harbor County, Washington
Hydrologic Unit Code 17100103
Latitude  46°56'22", Longitude 123°18'47" NAD27
Drainage area 1,294  square miles
Gage datum 0 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 1952-10-01 -> 2022-09-30)

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 8,220 9,610 7,020 6,220 3,130 1,610 852 434 452 836 2,780 7,600
2 8,080 9,320 7,010 5,710 3,000 1,630 827 432 445 866 2,840 8,430
3 8,180 8,890 7,010 5,310 2,930 1,680 810 431 451 782 2,850 9,180
4 8,270 8,080 6,990 5,100 2,920 1,610 790 425 454 760 2,890 9,750
5 8,620 7,630 6,930 5,020 2,940 1,530 763 420 448 803 3,080 9,770
6 9,260 7,570 6,840 5,140 2,880 1,450 736 415 462 804 3,100 9,080
7 10,300 7,740 6,830 5,290 2,770 1,420 714 412 487 826 3,380 8,570
8 10,900 7,870 6,760 5,160 2,650 1,430 695 413 465 812 3,510 7,990
9 11,000 8,190 6,800 5,070 2,520 1,400 685 419 448 894 3,550 7,740
10 10,600 7,900 7,220 4,980 2,400 1,390 682 409 455 1,100 3,490 7,690
11 10,300 7,490 7,710 4,810 2,320 1,410 672 397 489 1,100 3,660 8,180
12 9,930 7,280 7,670 4,740 2,230 1,390 658 390 479 1,080 4,150 9,070
13 10,000 7,340 7,540 4,830 2,160 1,370 645 385 468 1,070 4,700 9,480
14 9,860 7,380 7,510 4,920 2,110 1,310 643 383 459 1,070 5,170 9,420
15 9,800 7,370 7,470 4,960 2,100 1,260 633 383 465 1,080 5,570 9,620
16 9,880 7,840 7,520 4,860 2,090 1,240 619 381 489 1,090 5,520 9,530
17 10,000 8,400 7,200 4,660 2,070 1,210 606 381 547 1,130 5,540 9,320
18 10,000 8,750 6,690 4,420 2,030 1,160 586 378 598 1,140 5,760 9,140
19 10,000 8,930 6,270 4,160 1,990 1,120 566 376 613 1,230 6,200 8,780
20 9,810 8,900 5,920 4,090 1,960 1,110 553 375 611 1,390 6,940 8,720
21 9,560 8,800 5,830 4,090 1,940 1,080 541 379 625 1,580 7,240 8,910
22 9,370 8,490 5,800 3,830 1,880 1,060 530 390 613 1,710 7,360 9,030
23 8,890 8,200 5,790 3,730 1,840 1,030 517 390 602 1,800 7,610 8,930
24 9,050 7,980 5,900 3,830 1,810 1,000 505 407 618 1,720 7,760 8,600
25 9,620 7,820 6,050 3,860 1,750 980 491 426 615 1,690 8,330 8,290
26 9,610 7,690 6,030 3,700 1,690 956 480 443 593 1,830 9,010 8,120
27 9,640 7,260 5,930 3,540 1,640 926 471 452 584 2,010 8,710 8,060
28 9,230 7,040 5,890 3,520 1,620 897 464 444 597 2,180 8,250 8,240
29 9,220 7,110 5,870 3,460 1,630 891 454 440 686 2,220 7,670 8,340
30 9,290   6,240 3,280 1,620 879 445 446 802 2,380 7,320 8,450
31 9,420   6,460   1,570   439 457   2,510   8,530