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USGS Daily Statistics for Alaska

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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 15015595 UNUK R BL BLUE R NR WRANGELL AK


Ketchikan Gateway Borough, Alaska
Hydrologic Unit Code 19010105
Latitude  56°14'26", Longitude 130°52'49" NAD27
Drainage area 745  square miles
Gage datum 150 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 2002-10-01 -> 2019-09-30)

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 1,360 711 778 955 4,210 8,400 10,500 9,960 9,790 6,380 3,630 2,050
2 2,900 527 867 917 4,180 8,800 10,300 10,300 11,100 5,410 3,660 2,870
3 1,880 498 1,110 997 4,220 9,000 10,400 9,920 9,080 4,790 3,790 3,700
4 1,460 496 1,310 1,100 4,340 9,410 11,900 9,650 8,460 4,630 4,350 2,510
5 1,580 495 1,280 1,090 4,340 9,580 12,400 9,630 7,850 5,690 3,420 2,000
6 1,450 497 1,180 1,080 4,330 9,980 11,700 10,100 7,960 6,330 2,940 1,670
7 1,270 499 1,220 1,180 4,610 10,400 11,000 9,960 9,050 6,420 2,670 1,470
8 1,210 500 1,450 1,500 4,860 10,400 10,600 10,200 8,810 5,400 2,530 1,520
9 1,160 500 1,640 1,750 4,880 10,100 10,900 10,600 7,720 4,970 2,630 1,650
10 1,130 500 1,720 1,900 4,920 9,600 12,500 10,700 7,650 5,500 2,680 1,760
11 1,160 500 2,250 2,180 5,240 9,670 13,700 9,990 8,280 5,480 2,440 1,950
12 1,130 500 1,680 2,390 5,420 9,910 12,500 9,990 7,240 5,870 2,570 1,880
13 1,170 500 1,440 2,250 5,430 10,100 11,900 10,400 7,490 7,690 3,470 1,780
14 1,400 499 1,340 2,170 5,780 10,100 11,500 10,900 7,620 6,100 3,090 2,710
15 1,470 496 1,280 2,040 6,040 9,570 11,400 10,900 6,630 5,040 2,690 2,640
16 1,490 493 1,180 1,890 5,870 9,470 11,600 11,000 6,070 4,270 2,520 2,640
17 1,380 486 1,090 1,810 5,970 10,500 11,600 10,900 5,210 4,160 2,610 2,930
18 1,320 479 1,030 1,820 6,210 11,000 11,300 11,700 5,880 4,100 3,040 3,350
19 1,240 472 960 1,960 6,670 10,800 10,800 11,400 5,940 4,440 3,810 4,800
20 1,160 465 963 2,120 7,110 10,300 10,900 10,500 5,380 4,930 3,670 3,170
21 1,110 460 945 2,250 7,160 10,600 11,700 10,200 8,220 4,310 4,780 2,440
22 1,080 738 928 2,550 7,170 10,100 12,100 9,430 7,270 4,730 6,550 2,020
23 1,030 740 910 2,800 7,680 9,720 11,800 8,100 7,320 5,340 6,690 1,970
24 988 736 892 3,400 8,470 9,540 11,700 7,610 12,400 4,810 4,850 2,450
25 1,030 743 840 3,820 8,600 9,600 11,800 8,010 12,000 8,230 3,950 2,170
26 3,080 731 817 4,300 8,450 10,500 11,400 8,420 9,440 10,100 3,470 1,770
27 3,240 731 834 4,650 8,540 10,500 11,400 8,220 8,770 6,370 3,130 1,070
28 2,100 754 853 4,770 8,390 9,900 11,400 9,720 9,230 4,970 2,720 1,050
29 1,760   972 4,190 8,400 10,300 11,600 8,860 9,570 4,470 2,410 1,060
30 1,550   1,070 4,150 8,150 10,600 10,700 8,600 8,110 4,350 2,180 1,030
31 830   1,000   8,410   10,100 9,150   3,910   1,020