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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 -> 2020-09-30)

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 5,780 5,950 4,730 4,430 2,000 1,030 561 257 273 592 2,070 5,470
2 5,880 5,890 4,760 4,100 1,970 1,040 541 253 284 538 2,140 6,050
3 5,970 5,630 4,710 3,810 1,910 1,060 522 250 288 523 2,280 6,810
4 5,900 5,230 4,710 3,500 1,930 999 506 251 278 545 2,370 7,120
5 6,180 5,190 4,730 3,480 1,960 960 483 247 306 562 2,360 6,540
6 6,640 5,270 4,800 3,580 1,970 920 464 243 309 545 2,420 6,090
7 6,630 5,640 4,630 3,490 1,870 931 448 240 314 573 2,580 5,880
8 6,810 5,920 4,370 3,380 1,730 999 430 243 292 546 2,720 5,490
9 6,750 6,060 4,430 3,350 1,610 994 430 244 284 666 2,700 5,230
10 6,750 5,740 5,020 3,290 1,540 956 432 237 304 752 2,610 5,720
11 6,410 5,570 5,150 3,160 1,490 943 426 230 308 779 2,690 6,200
12 6,220 5,440 5,040 3,200 1,440 904 411 225 306 732 2,960 6,330
13 6,220 5,540 5,160 3,330 1,380 874 399 223 295 701 3,390 6,330
14 6,330 5,520 5,000 3,370 1,370 807 401 224 292 706 3,900 6,330
15 6,560 5,370 5,020 3,510 1,360 788 388 223 307 704 4,160 6,280
16 6,740 5,660 5,180 3,360 1,360 801 382 225 332 760 4,180 6,250
17 6,820 6,040 4,850 3,140 1,390 803 378 225 362 775 4,250 6,270
18 6,710 6,320 4,520 2,990 1,380 800 366 223 382 842 4,370 6,370
19 6,700 6,120 4,390 2,770 1,330 787 349 219 391 881 4,510 6,380
20 6,580 6,010 4,310 2,760 1,300 768 338 221 396 1,010 4,850 6,350
21 6,480 5,860 4,260 2,680 1,270 746 328 222 400 1,150 4,990 6,700
22 6,320 5,840 4,220 2,460 1,220 728 318 221 385 1,210 4,970 6,720
23 6,310 5,880 4,240 2,420 1,210 708 310 233 378 1,320 5,130 6,680
24 6,540 5,550 4,320 2,580 1,170 730 300 249 405 1,290 5,480 6,370
25 6,810 5,470 4,370 2,550 1,140 690 294 257 385 1,350 6,290 5,990
26 6,790 5,370 4,130 2,330 1,090 691 286 274 363 1,450 6,350 5,750
27 6,310 5,170 4,180 2,190 1,050 644 281 274 375 1,540 5,880 6,100
28 5,950 5,090 4,260 2,200 1,030 617 278 268 383 1,580 5,530 6,580
29 5,860 6,660 4,340 2,110 1,040 611 273 266 504 1,720 5,280 6,660
30 5,910   4,670 2,010 1,020 596 268 268 547 1,670 5,080 6,760
31 6,030   4,680   993   261 281   1,780   6,430