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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 12021800 CHEHALIS RIVER NEAR ADNA, WA


Lewis County, Washington
Hydrologic Unit Code 17100103
Latitude  46°37'33", Longitude 123°06'02" NAD27
Drainage area 340  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 2015-10-01 -> 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 2,440 2,800 4,130 1,430 781 324 170 66 47 140 1,170 1,570
2 2,500 2,610 3,000 1,280 723 310 164 65 51 125 1,020 1,570
3 4,500 2,250 2,530 1,170 703 390 159 67 53 126 915 1,580
4 3,800 2,020 2,500 1,390 706 386 152 66 50 117 1,570 1,710
5 3,190 2,270 2,140 1,290 759 447 146 63 47 117 2,190 3,010
6 5,270 2,280 1,910 1,210 762 384 141 62 48 140 1,780 2,930
7 7,550 2,290 1,840 1,370 816 355 139 62 51 174 1,860 2,440
8 4,480 2,300 1,820 2,180 757 335 141 63 49 182 1,520 2,840
9 3,470 3,470 1,970 1,910 684 336 139 63 54 234 1,180 3,690
10 3,350 3,090 3,030 1,710 625 437 137 64 69 243 1,070 3,310
11 3,810 2,030 2,360 1,640 584 438 137 62 60 317 1,130 3,670
12 5,860 2,030 2,230 1,630 584 398 130 61 65 483 2,010 3,650
13 6,090 1,810 2,250 1,630 605 374 122 61 67 349 2,390 3,180
14 3,940 1,760 2,380 1,940 587 424 116 59 62 715 3,730 2,450
15 2,870 2,050 2,370 2,280 573 393 111 56 62 737 4,460 1,910
16 2,520 3,060 2,100 1,870 677 444 108 53 83 829 3,280 1,660
17 2,240 2,610 1,770 1,670 700 385 108 51 85 930 3,500 1,920
18 2,960 2,290 1,960 1,460 631 340 108 50 167 843 3,480 3,050
19 3,550 2,120 1,770 1,470 589 309 107 50 155 1,080 2,350 3,580
20 3,150 2,240 1,570 1,310 548 281 101 49 129 956 2,430 5,950
21 3,220 2,150 1,500 1,240 498 263 96 49 109 900 2,110 5,450
22 3,570 2,500 1,450 1,170 479 244 92 51 88 1,830 2,410 4,280
23 3,700 2,500 1,370 1,100 439 230 91 52 95 894 2,500 3,600
24 4,190 1,950 1,510 1,090 409 222 90 49 196 623 2,960 3,160
25 3,370 1,690 1,530 1,080 393 213 87 47 177 561 3,030 2,820
26 2,830 1,800 1,440 1,020 376 200 83 46 199 774 2,070 2,660
27 3,010 1,730 1,470 937 360 192 79 45 182 813 2,330 3,230
28 3,890 2,840 1,540 875 366 189 76 44 216 875 2,190 2,890
29 3,280 4,470 1,740 826 410 184 74 44 175 1,220 1,810 2,710
30 2,880   1,840 826 371 175 71 43 145 739 1,830 3,240
31 2,560   1,610   348   68 44   1,040   2,700