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USGS Surface-Water 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 12013500 WILLAPA RIVER NEAR WILLAPA, WA


Pacific County, Washington
Hydrologic Unit Code 17100106
Latitude  46°39'04", Longitude 123°39'05" NAD27
Drainage area 130  square miles
Gage datum 6.92 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 1948-10-01 -> 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 1,240 1,350 1,010 783 412 209 106 46 53 134 599 1,650
2 1,290 1,220 962 745 419 248 105 45 60 132 593 1,870
3 1,410 1,150 1,070 739 432 222 98 44 53 127 552 1,800
4 1,370 1,160 1,090 773 436 207 94 43 53 140 657 1,820
5 1,470 1,060 1,100 770 441 199 90 42 50 139 623 1,510
6 1,600 1,120 1,020 765 414 190 87 42 50 167 679 1,430
7 1,880 1,230 969 732 393 200 82 44 51 154 738 1,320
8 1,640 1,210 925 746 369 189 82 43 47 160 672 1,190
9 1,480 1,230 1,100 737 350 182 87 42 53 198 653 1,280
10 1,400 1,220 1,200 703 337 191 86 39 54 232 732 1,400
11 1,410 1,070 1,150 705 319 185 84 38 61 207 843 1,480
12 1,530 1,110 1,120 706 304 211 81 38 54 189 985 1,530
13 1,530 1,180 1,140 726 303 189 87 39 50 193 1,020 1,640
14 1,570 1,080 1,110 746 300 181 81 38 51 222 1,200 1,470
15 1,630 1,130 1,180 733 290 172 77 39 60 228 1,280 1,510
16 1,520 1,480 1,150 678 300 170 74 41 64 227 1,170 1,540
17 1,440 1,510 1,040 657 280 164 76 40 91 261 1,210 1,490
18 1,530 1,330 1,030 599 275 155 73 37 89 256 1,130 1,390
19 1,610 1,350 1,050 581 270 147 68 38 82 287 1,290 1,310
20 1,540 1,280 959 590 259 138 64 40 79 329 1,460 1,540
21 1,530 1,200 900 530 252 133 62 39 78 365 1,270 1,500
22 1,380 1,260 930 495 252 129 63 50 72 427 1,370 1,400
23 1,400 1,190 945 563 241 126 60 53 99 387 1,360 1,350
24 1,470 1,180 978 587 241 122 58 54 95 357 1,550 1,300
25 1,460 1,080 903 509 228 125 55 59 81 389 1,570 1,250
26 1,300 983 863 470 217 118 52 55 83 464 1,390 1,360
27 1,240 977 890 484 212 114 51 50 95 519 1,330 1,530
28 1,350 1,030 878 480 218 111 50 54 118 514 1,330 1,470
29 1,340 1,110 1,010 444 219 115 50 58 139 534 1,300 1,350
30 1,390   997 427 212 106 48 65 180 552 1,410 1,460
31 1,350   873   205   46 57   619   1,240