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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 -> 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 5,800 5,920 4,860 4,380 1,990 1,030 561 255 268 582 2,010 5,340
2 5,900 5,910 4,930 4,060 1,960 1,040 542 251 279 530 2,080 5,890
3 6,140 5,650 4,790 3,770 1,910 1,050 523 249 283 513 2,230 6,630
4 6,180 5,220 4,720 3,490 1,920 994 507 249 274 535 2,330 6,910
5 6,400 5,170 4,710 3,480 1,950 961 484 245 300 550 2,500 6,410
6 6,870 5,260 4,760 3,560 1,970 931 465 242 303 534 2,510 6,100
7 7,200 5,650 4,580 3,470 1,880 941 450 239 307 560 2,670 5,900
8 7,430 5,950 4,320 3,380 1,750 1,000 433 242 286 534 2,800 5,450
9 7,100 6,050 4,360 3,330 1,620 997 432 243 278 647 2,720 5,170
10 6,880 5,690 4,930 3,280 1,550 974 433 235 297 729 2,610 5,690
11 6,500 5,500 5,040 3,190 1,490 973 426 229 301 763 2,680 6,210
12 6,440 5,350 4,930 3,240 1,440 932 411 224 300 744 3,050 6,360
13 6,600 5,430 5,050 3,340 1,390 898 399 222 290 710 3,520 6,330
14 6,670 5,410 4,920 3,370 1,370 840 400 222 287 712 3,980 6,290
15 6,730 5,270 4,940 3,490 1,360 820 387 221 301 703 4,200 6,190
16 6,800 5,590 5,090 3,330 1,370 839 380 223 326 750 4,220 6,130
17 6,800 5,970 4,760 3,120 1,400 833 376 223 355 770 4,240 6,160
18 6,660 6,220 4,440 2,970 1,380 821 364 220 375 839 4,330 6,250
19 6,630 6,020 4,300 2,780 1,330 803 348 217 386 900 4,480 6,310
20 6,500 5,910 4,240 2,770 1,310 779 337 219 391 1,030 4,800 6,420
21 6,390 5,750 4,190 2,690 1,270 755 326 220 393 1,140 4,890 6,900
22 6,260 5,760 4,160 2,480 1,220 735 316 219 377 1,190 4,850 6,950
23 6,250 5,890 4,170 2,440 1,210 713 308 231 370 1,310 4,980 6,820
24 6,520 5,540 4,250 2,580 1,160 731 299 246 402 1,270 5,310 6,430
25 6,780 5,410 4,300 2,550 1,130 691 292 253 388 1,330 6,070 6,060
26 6,730 5,300 4,070 2,330 1,090 691 285 270 367 1,440 6,130 5,810
27 6,240 5,110 4,100 2,190 1,050 644 279 269 376 1,530 5,680 6,160
28 5,920 5,080 4,180 2,190 1,030 617 276 264 388 1,560 5,350 6,650
29 5,850 6,480 4,270 2,100 1,050 610 272 262 503 1,720 5,110 6,680
30 5,870   4,600 2,000 1,030 595 266 263 540 1,650 4,940 6,710
31 5,970   4,620   996   259 275   1,740   6,400