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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°29'58", Longitude 120°25'24"
NAD27
Drainage area 1,301 square miles Gage datum 680.00 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: 1962-10-01 -> 2016-10-31) | ||||||||||||
Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | ||
1962 | 1,229 | 3,328 | 2,725 | ||||||||||
1963 | 2,027 | 3,326 | 2,289 | 2,374 | 6,297 | 6,245 | 2,420 | 1,037 | 683.2 | 816.9 | 1,297 | 1,313 | |
1964 | 1,564 | 1,017 | 1,216 | 2,473 | 6,047 | 13,490 | 7,835 | 2,547 | 1,029 | 1,590 | 1,082 | 1,715 | |
1965 | 1,342 | 2,410 | 2,292 | 4,991 | 8,197 | 9,838 | 4,336 | 1,490 | 685.4 | 858.8 | 1,433 | 1,024 | |
1966 | 898.1 | 717.6 | 1,166 | 4,390 | 8,096 | 7,045 | 3,948 | 1,133 | 544.6 | 867.9 | 998 | 2,157 | |
1967 | 1,839 | 1,901 | 1,390 | 1,678 | 7,450 | 13,910 | 5,253 | 1,333 | 673.2 | 2,301 | 3,165 | 2,947 | |
1968 | 4,021 | 3,992 | 4,191 | 2,657 | 6,943 | 8,736 | 4,247 | 1,395 | 1,324 | 1,344 | 2,104 | 1,673 | |
1969 | 1,893 | 1,103 | 1,582 | 4,700 | 12,440 | 12,220 | 2,729 | 916.4 | 839.6 | 1,514 | 1,260 | 890.4 | |
1970 | 836.2 | 936.5 | 1,421 | 2,326 | 6,968 | 10,760 | 2,974 | 760 | 674.8 | 660.5 | 958.1 | 865.6 | |
1971 | 1,606 | 4,104 | 1,663 | 2,638 | 11,670 | 11,400 | 8,962 | 2,900 | 967.5 | 881.5 | 1,588 | 1,113 | |
1972 | 1,218 | 2,226 | 6,853 | 4,755 | 12,970 | 16,490 | 9,702 | 3,690 | 1,558 | 1,211 | 1,020 | 1,652 | |
1973 | 1,718 | 973.5 | 1,167 | 2,246 | 5,785 | 5,329 | 2,378 | 816.1 | 544.4 | 902 | 1,398 | 1,379 | |
1974 | 3,271 | 2,110 | 2,081 | 4,541 | 7,773 | 17,020 | 9,880 | 3,971 | 1,257 | 667.5 | 846.8 | 1,320 | |
1975 | 1,892 | 1,300 | 1,362 | 2,230 | 8,180 | 12,610 | 7,689 | 1,990 | 1,004 | 1,319 | 3,330 | 6,983 | |
1976 | 3,033 | 2,594 | 1,725 | 3,327 | 9,975 | 8,813 | 8,584 | 3,930 | 1,527 | 824 | 1,123 | 1,133 | |
1977 | 1,642 | 1,431 | 1,162 | 2,865 | 3,565 | 4,508 | 1,135 | 802.9 | 796.4 | 775.7 | 2,604 | 5,306 | |
1978 | 1,500 | 1,351 | 3,049 | 5,101 | 7,570 | 10,500 | 5,138 | 1,447 | 1,628 | 1,016 | 1,722 | 927.3 | |
1979 | 646.5 | 771.8 | 2,006 | 2,581 | 8,190 | 5,528 | 2,117 | 739.8 | 605.9 | 626.7 | 656.7 | 3,474 | |
1980 | 1,313 | 1,153 | 2,098 | 5,425 | 9,225 | 6,468 | 3,155 | 968.7 | 769.2 | 591.9 | 2,371 | 5,923 | |
1981 | 3,610 | 3,218 | 2,634 | 3,060 | 6,512 | 5,716 | 3,278 | 1,114 | 589.6 | 1,234 | 1,599 | 1,112 | |
1982 | 1,297 | 3,680 | 2,836 | 2,784 | 8,300 | 14,380 | 6,367 | 1,901 | 993.6 | 1,286 | 1,145 | 1,746 | |
1983 | 2,752 | 1,880 | 3,813 | 4,222 | 9,647 | 8,837 | 4,376 | 1,709 | 1,096 | 712.2 | 2,303 | 1,137 | |
1984 | 4,309 | 2,232 | 2,674 | 2,845 | 4,641 | 10,410 | 6,085 | 1,744 | 802.5 | 1,113 | 1,252 | 833.4 | |
1985 | 736.8 | 714.8 | 1,066 | 4,460 | 7,747 | 7,758 | 2,326 | 682.6 | 685.5 | 1,500 | 2,716 | 868.1 | |
1986 | 1,274 | 2,455 | 4,910 | 4,386 | 6,522 | 7,703 | 2,116 | 827.4 | 632 | 678.8 | 2,324 | 1,401 | |
1987 | 897.1 | 913.3 | 2,667 | 4,914 | 9,953 | 5,248 | 1,819 | 604.7 | 421.6 | 346 | 425.8 | 655.7 | |
1988 | 526.5 | 797.6 | 1,660 | 5,436 | 7,397 | 7,022 | 3,521 | 1,013 | 592.1 | 1,556 | 2,263 | 1,903 | |
1989 | 1,616 | 1,343 | 1,299 | 5,342 | 7,353 | 7,886 | 2,649 | 857.5 | 439.5 | 621.7 | 2,662 | 3,181 | |
1990 | 1,797 | 1,638 | 2,078 | 7,260 | 6,019 | 8,435 | 4,319 | 1,287 | 665.7 | 1,904 | 9,636 | 3,346 | |
1991 | 2,236 | 4,233 | 2,633 | 4,364 | 7,704 | 8,448 | 6,865 | 2,147 | 882.6 | 619 | 1,383 | 1,685 | |
1992 | 1,410 | 2,322 | 3,524 | 4,787 | 6,861 | 4,195 | 1,381 | 606.8 | 560.3 | 603.9 | 1,022 | 729.1 | |
1993 | 814.5 | 964.4 | 1,432 | 2,699 | 9,614 | 5,023 | 1,544 | 703.1 | 406 | 399.4 | 447.3 | 611.5 | |
1994 | 905.4 | 825 | 2,151 | 5,293 | 7,020 | 4,004 | 1,907 | 576.1 | 424.5 | 662.8 | 1,014 | 1,502 | |
1995 | 1,132 | 4,502 | 3,567 | 3,972 | 11,190 | 8,915 | 4,361 | 1,317 | 721.3 | 2,345 | 8,872 | 5,822 | |
1996 | 3,295 | 5,447 | 3,773 | 6,194 | 5,999 | 8,312 | 5,363 | 1,719 | 803.6 | 955.6 | 1,788 | 1,147 | |
1997 | 1,642 | 2,134 | 3,962 | 5,577 | 12,960 | 13,320 | 7,239 | 2,246 | 1,432 | 3,095 | 3,100 | 1,434 | |
1998 | 1,367 | 1,478 | 2,376 | 3,792 | 10,830 | 7,411 | 2,827 | 841.7 | 453.9 | 504.2 | 1,293 | 1,467 | |
1999 | 2,931 | 1,626 | 1,924 | 3,848 | 7,877 | 14,070 | 9,695 | 3,985 | 1,108 | 1,056 | 4,465 | 3,204 | |
2000 | 1,518 | 1,052 | 1,399 | 5,308 | 7,205 | 8,947 | 4,277 | 1,330 | 759.2 | 1,012 | 784 | 555.7 | |
2001 | 612.9 | 517.8 | 994.5 | 2,011 | 5,979 | 3,898 | 1,647 | 616.4 | 361.5 | 656.5 | 2,509 | 1,532 | |
2002 | 2,565 | 1,863 | 2,018 | 4,771 | 7,794 | 12,540 | 5,912 | 1,499 | 761.3 | 476.6 | 774.6 | 769.7 | |
2003 | 1,319 | 2,373 | 2,839 | 4,169 | 6,425 | 8,046 | 2,377 | 732.4 | 435.5 | 2,470 | 2,783 | 1,883 | |
2004 | 1,221 | 1,501 | 2,980 | 5,303 | 7,289 | 5,294 | 1,737 | 860.3 | 1,302 | 1,062 | 2,298 | 3,071 | |
2005 | 4,227 | 2,472 | 1,923 | 2,842 | 4,988 | 2,273 | 1,015 | 425.5 | 301.3 | 793.9 | 1,147 | 1,389 | |
2006 | 2,208 | 1,421 | 1,301 | 3,543 | 10,770 | 10,760 | 3,656 | 738.6 | 485.4 | 445.6 | 5,664 | 1,514 | |
2007 | 1,938 | 1,894 | 5,922 | 5,094 | 8,295 | 7,691 | 3,597 | 886.8 | 441.8 | 982.2 | 1,173 | 2,141 | |
2008 | 884 | 895.8 | 1,304 | 1,634 | 10,110 | 8,182 | 4,875 | 1,274 | 592.4 | 785.8 | 3,980 | 1,717 | |
2009 | 3,155 | 1,304 | 1,258 | 2,857 | 7,175 | 8,696 | 2,551 | 808.9 | 625.4 | 1,200 | 2,249 | 1,319 | |
2010 | 1,220 | 1,237 | 1,663 | 3,103 | 6,446 | 9,825 | 4,548 | 1,324 | 1,132 | 1,238 | 2,217 | 2,112 | |
2011 | 3,978 | 2,748 | 1,990 | 3,726 | 7,479 | 11,340 | 7,888 | 2,785 | 1,010 | 1,323 | 1,172 | 1,017 | |
2012 | 1,361 | 1,438 | 1,580 | 4,733 | 8,877 | 9,972 | 7,542 | 1,683 | 596.6 | 1,352 | 3,123 | 1,758 | |
2013 | 1,099 | 1,157 | 2,200 | 4,835 | 9,175 | 7,131 | 3,478 | 1,041 | 1,113 | 2,008 | 1,581 | 1,494 | |
2014 | 1,564 | 1,110 | 3,383 | 4,148 | 9,152 | 7,760 | 3,948 | 1,252 | 675.3 | 1,541 | 4,346 | 3,616 | |
2015 | 3,535 | 4,660 | 3,663 | 3,031 | 4,356 | 2,520 | 799.4 | 377.1 | 453 | 686.7 | 5,389 | 3,763 | |
2016 | 1,608 | 4,077 | 4,092 | 9,311 | 8,461 | 5,057 | 2,308 | 864.8 | 542.3 | 2,797 | |||
Mean of monthly Discharge |
1,870 | 1,990 | 2,410 | 4,020 | 7,990 | 8,670 | 4,310 | 1,410 | 785 | 1,130 | 2,280 | 2,000 | |
** No Incomplete data have been used for statistical calculation |