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USGS Daily Statistics for the Nation

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 12027500 CHEHALIS RIVER NEAR GRAND MOUND, WA


Thurston County, Washington
Hydrologic Unit Code 17100103
Latitude  46°46'34", Longitude 123°02'04" NAD27
Drainage area 895  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 1928-10-01 -> 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 5,770 5,960 4,880 4,400 1,990 1,030 564 256 269 585 2,030 5,390
2 5,890 5,950 4,950 4,060 1,960 1,040 544 252 281 533 2,090 5,910
3 6,150 5,690 4,810 3,770 1,900 1,060 525 250 284 516 2,220 6,630
4 6,200 5,250 4,730 3,480 1,920 998 509 250 275 536 2,320 6,910
5 6,420 5,200 4,710 3,480 1,950 965 485 246 302 552 2,460 6,360
6 6,910 5,290 4,760 3,570 1,970 935 467 243 304 537 2,490 5,930
7 7,230 5,690 4,590 3,460 1,880 945 451 239 309 563 2,640 5,730
8 7,450 5,970 4,330 3,350 1,750 1,010 434 243 287 537 2,760 5,350
9 7,110 6,070 4,380 3,320 1,620 1,000 434 244 280 651 2,700 5,110
10 6,890 5,720 4,950 3,250 1,550 978 434 236 299 734 2,600 5,610
11 6,520 5,530 5,060 3,130 1,500 976 428 229 303 768 2,680 6,130
12 6,450 5,380 4,950 3,180 1,450 935 413 225 301 738 3,030 6,330
13 6,610 5,460 5,070 3,300 1,390 901 401 223 291 706 3,510 6,330
14 6,680 5,430 4,910 3,340 1,370 843 401 223 288 709 3,980 6,290
15 6,740 5,290 4,940 3,480 1,360 824 389 222 302 701 4,210 6,190
16 6,800 5,620 5,100 3,320 1,370 843 382 224 328 749 4,230 6,130
17 6,800 6,010 4,770 3,110 1,400 837 378 224 357 762 4,260 6,160
18 6,670 6,260 4,450 2,960 1,390 825 366 221 377 831 4,360 6,250
19 6,640 6,060 4,320 2,760 1,340 806 350 218 388 897 4,510 6,310
20 6,510 5,940 4,250 2,750 1,310 782 338 220 394 1,030 4,830 6,420
21 6,410 5,790 4,210 2,660 1,280 758 328 221 396 1,140 4,920 6,900
22 6,270 5,790 4,170 2,460 1,230 737 318 220 379 1,200 4,880 6,950
23 6,260 5,920 4,190 2,410 1,210 715 310 232 372 1,320 5,020 6,820
24 6,540 5,570 4,270 2,560 1,170 734 300 247 404 1,280 5,350 6,430
25 6,810 5,450 4,320 2,530 1,140 694 294 255 390 1,330 6,120 6,060
26 6,760 5,330 4,080 2,310 1,100 694 286 271 368 1,440 6,170 5,810
27 6,270 5,140 4,120 2,170 1,060 647 281 270 376 1,540 5,720 6,160
28 5,950 5,110 4,200 2,180 1,040 619 278 265 383 1,570 5,390 6,530
29 5,880 6,480 4,290 2,090 1,050 612 273 263 502 1,730 5,150 6,580
30 5,910   4,630 1,990 1,030 597 267 264 542 1,660 4,980 6,660
31 6,010   4,650   1,000   260 277   1,760   6,360