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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 12105900 GREEN RIVER BELOW HOWARD A HANSON DAM, WA


King County, Washington
Hydrologic Unit Code 17110013
Latitude  47°17'02", Longitude 121°47'48" NAD27
Drainage area 221  square miles
Gage datum 990 feet above NGVD29
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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 1960-10-01 -> 2025-09-30)

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 1,330 1,700 1,170 1,220 1,290 1,110 531 286 289 473 1,030 1,480
2 1,410 1,580 1,160 1,190 1,320 1,100 529 282 292 462 1,070 1,600
3 1,490 1,540 1,130 1,200 1,350 1,080 510 278 289 450 1,020 1,570
4 1,500 1,450 1,100 1,200 1,370 1,060 496 275 291 442 1,100 1,690
5 1,560 1,430 1,120 1,250 1,360 1,030 491 273 291 436 1,140 1,660
6 1,540 1,370 1,160 1,370 1,380 1,020 485 272 289 446 1,150 1,570
7 1,510 1,440 1,140 1,440 1,400 946 480 272 293 462 1,180 1,460
8 1,740 1,300 1,070 1,420 1,390 908 465 269 297 461 1,200 1,420
9 1,750 1,280 1,020 1,370 1,340 876 451 271 308 464 1,250 1,380
10 1,640 1,420 1,100 1,400 1,330 836 438 276 309 488 1,260 1,390
11 1,570 1,440 1,110 1,400 1,340 824 429 275 309 509 1,190 1,430
12 1,510 1,430 1,160 1,400 1,360 827 429 272 305 505 1,290 1,450
13 1,600 1,500 1,140 1,380 1,400 835 435 270 295 500 1,350 1,500
14 1,790 1,480 1,120 1,400 1,430 835 436 270 302 494 1,400 1,520
15 1,850 1,480 1,150 1,430 1,400 805 427 267 314 498 1,340 1,520
16 1,790 1,580 1,160 1,370 1,390 788 424 268 328 535 1,220 1,470
17 1,760 1,650 1,150 1,300 1,390 756 411 270 336 599 1,180 1,400
18 1,810 1,560 1,110 1,250 1,360 719 385 269 362 555 1,190 1,340
19 1,850 1,610 1,120 1,220 1,320 682 367 268 394 552 1,160 1,280
20 1,780 1,690 1,120 1,300 1,250 660 363 269 374 604 1,250 1,300
21 1,700 1,670 1,080 1,320 1,190 642 358 268 366 649 1,320 1,320
22 1,530 1,570 1,120 1,280 1,180 622 348 268 376 711 1,320 1,340
23 1,460 1,430 1,210 1,250 1,180 618 338 266 393 752 1,310 1,320
24 1,660 1,410 1,200 1,240 1,190 627 334 267 405 763 1,450 1,300
25 1,710 1,310 1,140 1,240 1,150 617 327 270 411 793 1,650 1,310
26 1,640 1,200 1,080 1,230 1,120 588 320 277 414 788 1,730 1,330
27 1,570 1,090 1,150 1,220 1,110 576 311 285 419 808 1,650 1,390
28 1,530 1,090 1,130 1,240 1,120 555 306 292 419 810 1,610 1,440
29 1,500 1,550 1,110 1,270 1,160 545 299 293 415 794 1,490 1,430
30 1,600   1,160 1,270 1,130 538 293 290 449 787 1,500 1,380
31 1,720   1,240   1,120   288 288   857   1,270