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USGS Surface-Water Monthly 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.
Chelan County, Washington Hydrologic Unit Code 17020011
Latitude 47°35'00", Longitude 120°37'06"
NAD27
Drainage area 1,000 square miles Gage datum 1,028.04 feet above NGVD29 |
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00060, Discharge, cubic feet per second, | |||||||||||||
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YEAR | Monthly mean in ft3/s (Calculation Period: 1929-03-01 -> 2016-11-30) | ||||||||||||
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | ||
1929 | 805.9 | 1,475 | 6,355 | 6,681 | 2,673 | 861.9 | 441.8 | 375.5 | 329.4 | 474.2 | |||
1930 | 420.7 | 952.7 | 1,676 | 4,930 | 5,025 | 4,511 | 2,420 | 782.9 | 458.2 | 577.4 | 696.7 | 482.5 | |
1931 | 700.5 | 1,221 | 1,536 | 2,764 | 8,228 | 5,588 | 1,728 | 572.2 | 506 | 509.3 | 1,219 | 626.7 | |
1932 | 894.7 | 2,157 | 3,530 | 4,408 | 8,130 | 8,977 | 4,054 | 1,300 | 602.3 | 866.9 | 4,459 | 2,710 | |
1933 | 1,680 | 962.4 | 970.7 | 2,898 | 5,920 | 11,710 | 8,584 | 2,817 | 1,254 | 3,640 | 4,546 | 5,648 | |
1934 | 3,697 | 3,043 | 5,172 | 11,250 | 8,911 | 6,079 | 2,644 | 1,119 | 683.1 | 1,086 | 3,897 | 1,888 | |
1935 | 3,505 | 3,131 | 2,095 | 2,780 | 8,208 | 9,941 | 4,945 | 1,447 | 853.8 | 612.5 | 525.4 | 496.9 | |
1936 | 550.4 | 485.9 | 1,018 | 4,693 | 11,090 | 8,934 | 2,257 | 789.8 | 587.8 | 474.7 | 339 | 728 | |
1937 | 493.4 | 476.4 | 839.1 | 1,923 | 6,602 | 11,440 | 4,481 | 1,071 | 636.9 | 719.7 | 1,778 | 1,697 | |
1938 | 1,445 | 871.5 | 1,294 | 4,696 | 9,777 | 10,070 | 3,345 | 816.5 | 522.1 | 621.5 | 844.7 | 1,310 | |
1939 | 1,841 | 901.3 | 1,372 | 4,234 | 7,447 | 5,516 | 3,481 | 980.9 | 494.9 | 611.3 | 1,151 | 2,037 | |
1940 | 883.3 | 922.6 | 1,856 | 4,385 | 7,773 | 5,214 | 1,586 | 659.8 | 542.8 | 1,045 | 777.9 | 1,072 | |
1941 | 643 | 618.1 | 1,867 | 4,334 | 4,414 | 3,191 | 1,164 | 587.1 | 953.1 | 2,089 | 1,761 | 2,308 | |
1942 | 887.2 | 705.4 | 879.8 | 3,661 | 5,770 | 5,499 | 2,801 | 788.8 | 426.1 | 335.8 | 782.4 | 1,122 | |
1943 | 1,190 | 971.9 | 1,239 | 5,501 | 6,854 | 10,070 | 7,572 | 1,835 | 688.5 | 627.3 | 647.5 | 1,444 | |
1944 | 616.2 | 650.6 | 1,126 | 2,518 | 5,677 | 5,062 | 1,576 | 577 | 766.5 | 780.1 | 846.1 | 1,293 | |
1945 | 2,125 | 1,855 | 1,090 | 1,712 | 7,404 | 6,809 | 2,667 | 784.9 | 682.1 | 1,044 | 1,452 | 819.8 | |
1946 | 849.3 | 656.8 | 1,113 | 3,418 | 12,110 | 9,592 | 4,993 | 1,394 | 683.1 | 930.5 | 849 | 1,863 | |
1947 | 1,457 | 1,822 | 2,884 | 5,250 | 10,140 | 7,097 | 3,265 | 1,125 | 732.5 | 2,306 | 2,288 | 1,576 | |
1948 | 1,050 | 979 | 972.3 | 2,441 | 9,433 | 14,750 | 4,234 | 1,639 | 933.1 | 1,507 | 1,161 | 1,175 | |
1949 | 688.7 | 988.6 | 1,450 | 4,572 | 12,410 | 9,379 | 4,560 | 1,533 | 1,046 | 1,455 | 4,001 | 2,965 | |
1950 | 1,495 | 1,121 | 1,843 | 2,539 | 7,448 | 14,650 | 9,491 | 2,687 | 1,017 | 2,255 | 2,893 | 3,563 | |
1951 | 2,194 | 3,944 | 1,862 | 5,379 | 11,250 | 9,754 | 4,651 | 1,357 | 802.3 | 1,848 | 1,765 | 1,081 | |
1952 | 809 | 830.2 | 947.8 | 3,979 | 8,314 | 6,723 | 3,367 | 1,081 | 614.9 | 463.4 | 383.9 | 421.2 | |
1953 | 2,076 | 2,917 | 1,588 | 2,883 | 7,955 | 8,183 | 6,888 | 1,967 | 802.5 | 978.6 | 1,558 | 2,043 | |
1954 | 1,371 | 1,143 | 1,325 | 2,729 | 9,400 | 10,230 | 10,350 | 4,003 | 1,746 | 1,329 | 2,889 | 1,732 | |
1955 | 1,019 | 1,140 | 880.5 | 1,706 | 5,305 | 13,320 | 7,695 | 2,420 | 942.2 | 2,034 | 4,511 | 2,107 | |
1956 | 1,213 | 906.4 | 1,001 | 5,719 | 13,800 | 13,030 | 8,358 | 2,149 | 1,105 | 1,901 | 1,853 | 3,794 | |
1957 | 1,199 | 932.1 | 1,474 | 3,348 | 12,430 | 7,723 | 2,577 | 1,069 | 699.1 | 654.5 | 903.3 | 992.1 | |
1958 | 872.5 | 1,330 | 1,594 | 3,009 | 12,390 | 7,734 | 2,019 | 808.1 | 653.2 | 1,453 | 2,892 | 3,855 | |
1959 | 2,448 | 1,512 | 1,845 | 5,008 | 8,160 | 11,430 | 7,076 | 1,840 | 1,997 | 3,654 | 4,622 | 4,365 | |
1960 | 1,440 | 1,081 | 1,640 | 4,432 | 6,537 | 9,141 | 4,538 | 1,215 | 704.2 | 757.6 | 1,351 | 826.8 | |
1961 | 1,553 | 2,365 | 2,318 | 4,024 | 9,037 | 12,570 | 3,791 | 1,162 | 745.9 | 1,188 | 1,032 | 907.2 | |
1962 | 2,721 | 2,244 | 1,166 | 4,599 | 5,140 | 8,046 | 4,155 | 1,475 | 711 | 1,218 | 2,844 | 2,404 | |
1963 | 1,899 | 2,887 | 2,128 | 2,270 | 6,089 | 6,477 | 2,522 | 1,175 | 736.5 | 812.4 | 1,235 | 1,262 | |
1964 | 1,500 | 938.6 | 1,110 | 2,320 | 5,705 | 12,820 | 7,866 | 2,492 | 1,048 | 1,558 | 1,010 | 1,666 | |
1965 | 1,217 | 2,125 | 2,115 | 4,560 | 7,867 | 9,624 | 4,491 | 1,600 | 746.5 | 855.1 | 1,405 | 962.9 | |
1966 | 855.3 | 654 | 985 | 4,085 | 7,713 | 6,952 | 4,027 | 1,258 | 618.7 | 841.2 | 928 | 1,993 | |
1967 | 1,704 | 1,719 | 1,287 | 1,583 | 6,978 | 13,490 | 5,455 | 1,467 | 766.2 | 2,272 | 3,058 | 2,798 | |
1968 | 3,760 | 3,648 | 3,918 | 2,442 | 6,793 | 8,806 | 4,365 | 1,470 | 1,349 | 1,274 | 1,961 | 1,532 | |
1969 | 1,690 | 966.3 | 1,253 | 4,158 | 11,760 | 11,740 | 2,781 | 995.4 | 877.6 | 1,445 | 1,160 | 809.1 | |
1970 | 733.2 | 825.6 | 1,180 | 2,069 | 6,550 | 10,190 | 3,023 | 868.8 | 743.2 | 630.4 | 855.7 | 761.2 | |
1971 | 1,435 | 3,740 | 1,456 | 2,298 | 10,940 | 10,830 | 8,859 | 2,975 | 990.8 | 842.3 | 1,459 | 1,021 | |
1972 | 1,061 | 1,882 | 5,607 | 4,184 | 11,780 | 15,290 | 9,455 | 3,719 | 1,576 | 1,183 | 948.4 | 1,496 | |
1973 | 1,558 | 877.1 | 1,045 | 2,186 | 5,611 | 5,222 | 2,482 | 952.5 | 613.3 | 861.7 | 1,247 | 1,189 | |
1974 | 2,770 | 1,744 | 1,659 | 3,761 | 7,255 | 16,180 | 9,755 | 3,969 | 1,344 | 644.3 | 789.2 | 1,216 | |
1975 | 1,725 | 1,189 | 1,170 | 1,929 | 7,440 | 11,880 | 7,451 | 2,016 | 987.2 | 1,221 | 2,961 | 6,202 | |
1976 | 2,679 | 2,265 | 1,478 | 2,865 | 9,214 | 8,411 | 8,275 | 3,838 | 1,537 | 781.3 | 1,043 | 1,056 | |
1977 | 1,575 | 1,356 | 1,115 | 2,786 | 3,506 | 4,566 | 1,255 | 942.8 | 855.1 | 744.6 | 2,426 | 4,628 | |
1978 | 1,315 | 1,132 | 2,558 | 4,452 | 6,905 | 9,833 | 4,893 | 1,459 | 1,515 | 898.9 | 1,544 | 798.3 | |
1979 | 530.3 | 628.8 | 1,739 | 2,375 | 7,679 | 5,444 | 2,213 | 866.8 | 646.1 | 610.2 | 575.2 | 3,200 | |
1980 | 1,224 | 992.8 | 1,700 | 4,672 | 8,530 | 6,190 | 3,152 | 1,080 | 809.1 | 574.8 | 2,227 | 5,263 | |
1981 | 3,209 | 2,729 | 2,297 | 2,802 | 6,066 | 5,533 | 3,350 | 1,215 | 642.2 | 1,191 | 1,516 | 1,006 | |
1982 | 1,142 | 3,152 | 2,440 | 2,518 | 7,646 | 13,220 | 5,969 | 1,867 | 981.2 | 1,148 | 992.2 | 1,555 | |
1983 | 2,418 | 1,555 | 2,999 | 3,705 | 8,704 | 8,119 | 4,188 | 1,763 | 1,050 | 652.6 | 2,112 | 994.5 | |
1984 | 3,759 | 1,992 | 2,292 | 2,569 | 4,329 | 9,711 | 5,855 | 1,800 | 800.4 | 1,033 | 1,141 | 725.9 | |
1985 | 645.6 | 604.7 | 895 | 4,031 | 7,278 | 7,361 | 2,413 | 777 | 695.3 | 1,436 | 2,544 | 789.7 | |
1986 | 1,140 | 2,103 | 4,265 | 3,990 | 6,192 | 7,321 | 2,152 | 921.4 | 613.8 | 625.8 | 2,197 | 1,302 | |
1987 | 792.5 | 794.2 | 2,320 | 4,619 | 9,366 | 5,184 | 1,872 | 708.9 | 482 | 330.6 | 354.9 | 535.2 | |
1988 | 431.7 | 645.4 | 1,443 | 5,003 | 7,005 | 6,747 | 3,549 | 1,102 | 645.8 | 1,494 | 2,156 | 1,771 | |
1989 | 1,490 | 1,225 | 1,131 | 4,893 | 6,918 | 7,611 | 2,707 | 945.7 | 505.5 | 578.5 | 2,562 | 3,016 | |
1990 | 1,631 | 1,493 | 1,841 | 6,758 | 5,847 | 8,102 | 4,361 | 1,366 | 710.7 | 1,853 | 8,800 | 3,098 | |
1991 | 2,060 | 3,871 | 2,396 | 4,057 | 7,239 | 8,099 | 6,760 | 2,228 | 868.2 | 586.9 | 1,302 | 1,545 | |
1992 | 1,302 | 2,135 | 3,331 | 4,597 | 6,642 | 4,310 | 1,449 | 724.5 | 609.5 | 608 | 967 | 677.2 | |
1993 | 731.6 | 866.5 | 1,305 | 2,516 | 8,971 | 4,874 | 1,590 | 809.1 | 469.4 | 400.5 | 405.7 | 553 | |
1994 | 819 | 751.7 | 1,966 | 4,990 | 6,737 | 4,056 | 2,014 | 674.7 | 491.1 | 666.2 | 923.2 | 1,323 | |
1995 | 994.4 | 3,878 | 3,088 | 3,652 | 10,090 | 8,271 | 4,285 | 1,343 | 720.8 | 2,295 | 8,077 | 5,471 | |
1996 | 3,091 | 4,677 | 3,350 | 5,950 | 6,043 | 8,157 | 5,464 | 1,611 | 787.1 | 897.3 | 1,686 | 1,018 | |
1997 | 1,479 | 1,917 | 3,430 | 4,971 | 11,790 | 12,290 | 7,056 | 2,270 | 1,366 | 2,996 | 2,943 | 1,327 | |
1998 | 1,270 | 1,267 | 1,986 | 3,464 | 9,821 | 7,022 | 2,864 | 904.5 | 487.2 | 462.3 | 1,183 | 1,253 | |
1999 | 2,598 | 1,362 | 1,505 | 3,331 | 7,137 | 12,740 | 9,168 | 3,943 | 1,093 | 1,044 | 4,199 | 2,947 | |
2000 | 1,411 | 963.5 | 1,188 | 4,784 | 6,782 | 8,539 | 4,273 | 1,431 | 801.9 | 1,003 | 736.4 | 520.9 | |
2001 | 579.6 | 489.3 | 911.6 | 1,916 | 5,792 | 3,912 | 1,742 | 731.9 | 451.9 | 663.1 | 2,364 | 1,309 | |
2002 | 2,267 | 1,626 | 1,740 | 4,319 | 7,243 | 11,680 | 5,777 | 1,424 | 653 | 450.1 | 680.2 | 662.1 | |
2003 | 1,154 | 2,029 | 2,462 | 3,787 | 6,029 | 7,641 | 2,360 | 784.8 | 464.5 | 2,368 | 2,581 | 1,608 | |
2004 | 1,073 | 1,293 | 2,619 | 5,048 | 7,013 | 5,268 | 1,782 | 899.8 | 1,293 | 994 | 2,136 | 2,844 | |
2005 | 3,989 | 2,276 | 1,742 | 2,554 | 4,590 | 2,205 | 1,066 | 513.9 | 346.3 | 724.6 | 1,026 | 1,228 | |
2006 | 1,917 | 1,197 | 1,059 | 3,000 | 9,533 | 9,705 | 3,503 | 821.1 | 516 | 396.6 | 5,088 | 1,444 | |
2007 | 1,790 | 1,695 | 5,251 | 4,744 | 7,875 | 7,394 | 3,597 | 945.5 | 493.6 | 938.2 | 1,083 | 1,978 | |
2008 | 809.3 | 788.9 | 1,104 | 1,503 | 9,285 | 7,686 | 4,636 | 1,289 | 659.4 | 806.1 | 3,697 | 1,610 | |
2009 | 2,807 | 1,127 | 1,052 | 2,657 | 6,656 | 8,187 | 2,629 | 923.2 | 697.1 | 1,209 | 2,163 | 1,248 | |
2010 | 1,101 | 1,147 | 1,580 | 2,808 | 5,810 | 8,926 | 4,419 | 1,342 | 1,091 | 1,119 | 2,008 | 1,881 | |
2011 | 3,473 | 2,441 | 1,664 | 3,253 | 6,592 | 10,330 | 7,436 | 2,755 | 1,030 | 1,209 | 1,040 | 893.2 | |
2012 | 1,228 | 1,253 | 1,341 | 4,063 | 8,056 | 9,170 | 7,131 | 1,701 | 661.1 | 1,312 | 2,894 | 1,548 | |
2013 | 968.5 | 1,037 | 2,002 | 4,516 | 8,857 | 7,041 | 3,531 | 1,118 | 1,145 | 1,921 | 1,477 | 1,390 | |
2014 | 1,478 | 1,041 | 3,056 | 3,887 | 8,908 | 7,716 | 4,059 | 1,270 | 689.4 | 1,482 | 4,184 | 3,430 | |
2015 | 3,283 | 4,350 | 3,395 | 2,929 | 4,415 | 2,605 | 910.8 | 487.5 | 515.9 | 690.1 | 5,101 | 3,377 | |
2016 | 1,437 | 3,662 | 3,529 | 8,532 | 8,182 | 5,062 | 2,372 | 951.9 | 592.1 | 2,698 | 3,154 | ||
Mean of monthly Discharge |
1,580 | 1,620 | 1,910 | 3,760 | 7,820 | 8,460 | 4,320 | 1,430 | 806 | 1,140 | 2,020 | 1,810 | |
** No Incomplete data have been used for statistical calculation |