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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 12442500 SIMILKAMEEN RIVER NEAR NIGHTHAWK, WA


Okanogan County, Washington
Hydrologic Unit Code 17020007
Latitude  48°59'05", Longitude 119°37'02" NAD27
Drainage area 3,550  square miles
Gage datum 1,137.70 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 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
1 690 678 717 1,040 4,410 10,800 4,990 1,310 638 570 901 1,010
2 675 693 701 1,070 4,590 10,700 4,810 1,260 632 586 871 958
3 656 707 700 1,120 4,770 10,700 4,650 1,220 631 584 885 937
4 648 720 694 1,160 4,930 10,600 4,520 1,180 628 591 901 957
5 672 717 688 1,190 5,180 10,500 4,330 1,150 617 602 942 982
6 678 716 692 1,220 5,500 10,300 4,160 1,110 604 607 930 921
7 661 726 697 1,270 5,770 10,100 4,010 1,070 607 594 1,010 860
8 675 726 698 1,350 6,070 9,990 3,890 1,040 605 594 1,020 815
9 712 721 700 1,450 6,420 9,730 3,730 1,000 587 598 995 789
10 712 720 707 1,540 6,720 9,530 3,560 966 576 615 1,030 810
11 700 715 714 1,580 7,010 9,430 3,400 936 569 622 1,110 823
12 683 723 721 1,640 7,330 9,200 3,240 904 565 638 1,000 854
13 672 722 785 1,710 7,730 9,000 3,110 876 563 646 1,010 838
14 666 719 786 1,820 8,000 8,920 2,970 861 556 641 1,030 809
15 654 721 788 1,930 8,220 8,750 2,830 855 557 651 1,020 802
16 648 712 800 2,000 8,480 8,630 2,700 842 566 659 989 790
17 660 710 804 2,080 8,770 8,470 2,590 834 576 674 983 789
18 668 708 812 2,190 9,020 8,200 2,490 814 579 701 970 776
19 664 706 823 2,330 9,110 7,860 2,380 791 578 712 970 756
20 686 709 836 2,490 9,320 7,570 2,270 773 569 707 940 755
21 677 708 850 2,660 9,610 7,390 2,160 753 570 766 928 750
22 673 703 859 2,860 9,740 7,210 2,070 735 572 793 896 743
23 665 698 865 3,050 9,880 7,000 1,960 724 573 771 907 727
24 683 694 872 3,240 10,000 6,710 1,890 715 562 755 997 711
25 702 690 883 3,390 10,200 6,370 1,820 710 558 779 1,030 711
26 706 696 899 3,510 10,400 6,030 1,740 700 557 866 1,010 708
27 686 712 908 3,650 10,500 5,740 1,650 688 556 876 1,010 800
28 668 771 918 3,830 10,600 5,510 1,560 674 559 852 1,030 782
29 668 863 937 4,040 10,700 5,350 1,500 661 555 872 993 726
30 679   964 4,200 10,800 5,230 1,450 651 565 868 1,050 698
31 680   1,000   10,800   1,380 643   853   693