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USGS 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 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 -> 2025-09-30)

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 1,600 1,650 889 1,150 3,860 9,410 11,700 10,600 10,200 6,710 4,620 2,320
2 1,930 1,430 885 1,140 3,910 9,660 11,500 10,000 10,000 6,990 6,300 2,740
3 1,580 1,260 943 1,180 4,210 9,950 11,600 9,820 9,470 6,510 4,740 2,910
4 1,430 1,190 970 1,210 4,310 10,000 12,100 10,000 8,280 5,710 4,590 2,460
5 1,440 1,220 946 1,200 4,380 9,680 12,600 10,800 8,190 6,250 4,030 2,660
6 1,370 1,210 906 1,220 4,590 9,410 12,300 10,800 7,700 7,300 3,390 2,660
7 1,240 1,260 892 1,310 4,690 9,550 12,000 10,900 7,900 7,280 3,140 2,370
8 1,200 1,190 979 1,450 4,690 9,710 11,600 10,700 7,800 6,270 3,340 2,110
9 1,150 1,540 1,020 1,560 4,970 9,760 11,700 10,600 6,980 6,620 3,650 2,020
10 1,090 1,670 1,050 1,620 5,700 9,730 12,400 10,900 6,830 6,820 3,160 1,940
11 1,130 1,310 1,230 1,700 6,040 10,000 12,800 10,100 7,530 5,420 2,780 1,900
12 1,120 1,190 1,030 1,770 5,760 10,400 11,800 9,860 7,330 5,420 2,860 1,840
13 1,120 1,160 959 1,700 5,840 10,200 11,100 10,700 7,320 6,470 3,410 1,860
14 1,180 1,060 933 1,660 6,350 9,590 11,000 10,900 7,050 5,930 3,430 2,130
15 1,300 995 925 1,650 6,460 9,290 11,400 12,000 6,470 5,290 3,190 2,040
16 1,380 963 920 1,670 6,460 9,740 12,000 12,600 5,770 4,660 3,010 1,990
17 1,280 997 926 1,780 6,450 10,700 11,600 11,900 5,370 4,820 4,430 2,060
18 1,230 994 960 2,010 6,530 11,700 11,700 11,500 5,860 5,830 4,300 2,200
19 1,340 1,050 993 2,190 6,930 11,700 11,200 10,300 5,870 6,420 3,800 2,730
20 1,210 960 1,020 2,270 7,260 11,200 10,900 10,400 5,570 5,280 3,400 2,100
21 1,160 929 1,060 2,320 7,340 11,200 11,300 10,600 9,620 4,700 3,960 1,830
22 1,220 904 1,200 2,520 7,330 11,000 11,400 9,280 9,130 4,620 5,000 1,630
23 1,310 903 1,330 2,690 7,650 10,500 11,200 8,940 8,160 4,790 5,090 1,590
24 1,310 847 1,280 2,950 8,120 10,300 10,900 8,380 12,800 4,450 3,960 1,780
25 1,320 840 1,150 3,120 8,200 10,700 10,800 8,660 11,100 6,010 3,520 1,690
26 1,930 829 1,100 3,390 7,990 11,600 10,900 9,220 8,820 7,150 3,250 1,600
27 2,080 851 1,100 3,600 7,940 12,100 11,700 8,930 8,610 5,480 3,070 1,310
28 1,820 916 1,120 3,720 7,840 12,200 11,000 10,100 8,660 4,380 2,840 1,290
29 2,250 964 1,130 3,730 8,010 12,700 10,800 9,950 7,820 3,940 2,590 1,370
30 2,370   1,180 3,920 8,060 12,200 10,300 9,290 6,840 3,790 2,380 1,610
31 1,860   1,160   8,590   10,800 10,100   3,560   1,670