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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 -> 2019-09-30)

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 2,240 2,120 2,320 1,580 813 302 155 64 44 74 2,050 1,990
2 1,810 1,950 3,110 1,390 760 293 152 63 51 88 1,660 1,920
3 1,580 1,730 3,090 1,220 713 281 147 64 60 102 1,330 1,890
4 1,840 1,910 3,480 1,150 672 271 140 64 57 89 1,100 2,290
5 1,840 2,550 2,780 1,140 702 259 137 61 51 106 1,160 2,250
6 1,730 2,280 2,550 1,170 653 246 132 59 54 166 1,440 2,480
7 1,600 1,930 2,670 1,290 605 235 128 59 63 248 1,090 3,140
8 1,640 1,730 2,850 3,960 568 244 135 61 60 268 939 4,440
9 1,670 5,020 3,450 3,310 539 299 138 64 54 384 869 6,390
10 2,200 4,740 6,490 2,300 519 282 137 65 52 358 860 4,140
11 2,520 2,710 4,280 1,820 542 305 134 63 52 293 783 3,820
12 3,120 2,850 3,440 1,860 592 269 125 63 79 227 843 4,230
13 2,890 2,460 3,290 2,190 640 244 118 66 88 244 1,810 3,690
14 2,290 2,390 3,950 3,330 640 246 113 64 74 1,100 5,410 2,840
15 1,830 2,850 4,170 4,610 617 281 108 60 68 1,290 6,370 2,200
16 1,710 4,340 3,540 3,540 833 451 103 55 67 1,540 4,340 1,870
17 1,840 3,220 2,770 3,050 923 361 100 52 83 1,540 5,450 1,970
18 3,560 2,840 3,500 2,340 769 302 97 51 88 1,290 5,580 4,540
19 4,580 2,640 2,970 1,840 673 273 96 51 105 1,220 2,630 4,710
20 4,030 3,310 2,240 1,560 610 245 95 49 128 1,280 3,220 4,510
21 4,250 2,970 1,990 1,320 544 226 94 47 127 1,440 3,130 3,930
22 4,200 2,510 1,890 1,210 502 213 91 46 96 3,390 4,140 3,480
23 3,710 2,110 1,730 1,160 462 205 89 44 104 1,330 4,460 3,460
24 4,240 1,860 2,210 1,280 429 207 88 43 96 841 5,640 3,440
25 3,230 1,790 2,320 1,370 408 202 83 42 87 649 5,770 2,640
26 2,800 1,880 2,160 1,250 383 190 79 42 80 673 3,630 2,120
27 3,250 1,680 2,330 1,150 364 179 76 41 73 882 4,250 2,010
28 3,690 1,610 2,300 1,040 347 170 75 40 68 911 3,720 1,890
29 3,320 1,600 2,250 949 333 166 73 40 66 856 2,930 3,100
30 3,220   2,250 893 322 161 70 39 67 840 2,330 4,410
31 2,580   1,860   313   66 40   1,660   2,910