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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 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 -> 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 5,760 5,920 4,970 4,370 2,000 1,020 561 255 268 582 2,010 5,340
2 5,860 5,890 5,010 4,040 1,960 1,030 541 251 279 530 2,080 5,890
3 6,100 5,620 4,840 3,760 1,910 1,060 523 249 283 513 2,230 6,630
4 6,140 5,190 4,750 3,470 1,930 1,020 507 249 274 535 2,330 6,910
5 6,360 5,130 4,740 3,470 1,970 986 483 245 300 550 2,500 6,410
6 6,840 5,220 4,770 3,540 1,990 950 465 242 303 534 2,510 6,100
7 7,190 5,610 4,580 3,460 1,900 952 449 239 307 560 2,670 5,900
8 7,400 5,900 4,310 3,360 1,770 1,010 432 242 286 534 2,800 5,450
9 7,100 6,000 4,360 3,320 1,630 1,000 432 243 278 647 2,720 5,170
10 6,920 5,650 4,920 3,270 1,560 978 432 235 297 729 2,610 5,690
11 6,550 5,460 5,040 3,180 1,500 976 426 229 301 763 2,680 6,210
12 6,470 5,310 4,940 3,220 1,450 934 411 224 300 744 3,050 6,360
13 6,610 5,390 5,080 3,320 1,390 900 398 222 290 710 3,520 6,330
14 6,650 5,370 4,930 3,350 1,370 842 399 222 287 712 3,980 6,280
15 6,690 5,240 4,940 3,470 1,360 823 386 221 301 703 4,200 6,180
16 6,750 5,580 5,080 3,310 1,360 843 379 223 326 750 4,220 6,110
17 6,750 5,950 4,750 3,100 1,400 836 375 223 355 770 4,240 6,130
18 6,630 6,200 4,430 2,950 1,380 824 364 220 375 839 4,330 6,210
19 6,690 6,000 4,290 2,760 1,330 804 347 217 386 900 4,480 6,270
20 6,550 5,880 4,220 2,750 1,300 780 336 219 391 1,030 4,800 6,380
21 6,430 5,730 4,180 2,670 1,270 756 326 220 393 1,140 4,890 6,860
22 6,330 5,740 4,140 2,460 1,220 735 316 219 377 1,190 4,850 6,900
23 6,360 5,860 4,160 2,420 1,210 712 308 231 370 1,310 4,980 6,780
24 6,600 5,510 4,240 2,560 1,160 730 299 246 402 1,270 5,310 6,390
25 6,870 5,390 4,280 2,530 1,130 690 292 253 388 1,330 6,070 6,020
26 6,800 5,280 4,050 2,320 1,090 690 285 270 367 1,440 6,130 5,780
27 6,310 5,100 4,090 2,180 1,050 643 279 269 376 1,530 5,680 6,130
28 6,060 5,070 4,180 2,190 1,030 617 276 264 388 1,560 5,350 6,610
29 5,970 6,730 4,270 2,100 1,050 610 272 262 503 1,720 5,110 6,640
30 5,930   4,600 2,000 1,030 595 266 263 540 1,650 4,940 6,670
31 5,990   4,610   995   259 275   1,740   6,360