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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 15875000 COLVILLE R AT UMIAT AK


North Slope Borough, Alaska
Hydrologic Unit Code 19060303
Latitude  69°21'37.8", Longitude 152°07'21.7" NAD83
Drainage area 13,860  square miles
Gage datum 206.78 feet above NAVD88
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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 2001-10-01 -> 2023-09-30)

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 38 13 5.7 3.2 13 85,700 22,700 16,500 24,000 6,160 639 145
2 37 13 5.6 3.2 32 79,900 22,900 19,700 23,900 6,040 605 138
3 35 12 5.3 3.2 99 75,700 21,200 19,500 24,000 6,680 575 133
4 34 12 5.3 3.2 175 73,000 22,400 20,000 23,800 9,150 542 124
5 33 11 5.2 3.2 123 73,400 19,500 22,400 21,500 8,300 517 120
6 32 11 5 3.1 109 71,800 17,100 20,800 20,700 6,480 487 114
7 31 11 4.9 3.1 99 70,300 15,900 18,500 20,600 5,570 470 106
8 29 11 4.8 3.1 90 64,200 15,200 18,000 20,800 4,840 446 102
9 28 10 4.5 3.1 86 58,000 15,500 17,200 19,800 4,240 421 98
10 27 10 4.5 3.1 90 54,700 15,900 16,000 18,900 3,710 397 93
11 26 9.5 4.4 3.1 82 52,700 17,200 15,300 17,900 3,330 380 89
12 25 9.2 4.3 3.1 83 47,700 17,700 15,300 16,300 2,990 356 85
13 24 9.1 4.2 3.1 86 41,300 17,300 16,500 15,600 2,750 342 82
14 23 9 4.2 3.1 1,740 36,300 16,900 20,500 14,800 2,500 325 78
15 23 8.6 4 3.1 3,840 32,800 17,300 24,000 14,700 2,130 307 75
16 22 8.5 4 3.1 3,330 30,900 18,600 22,600 14,600 1,900 293 71
17 21 8.1 3.9 3.1 5,900 29,000 17,000 20,900 14,100 1,690 281 69
18 20 7.9 3.8 3.1 11,500 26,900 15,800 23,000 13,200 1,520 260 66
19 20 7.6 3.8 3.1 16,200 25,200 15,900 26,900 12,600 1,390 252 64
20 19 7.5 3.7 3.1 19,300 24,900 17,300 26,800 12,300 1,300 239 61
21 18 7.3 3.6 3.1 24,200 24,000 18,900 25,900 12,300 1,220 232 60
22 18 7.1 3.5 3.1 29,800 23,600 18,200 24,300 11,700 1,140 215 56
23 17 6.8 3.5 3.1 38,000 23,100 17,500 24,100 11,400 1,060 208 55
24 17 6.6 3.5 3.2 51,200 24,200 18,300 24,000 10,700 1,000 195 53
25 16 6.3 3.5 3.2 55,700 22,100 17,600 23,600 9,710 937 189 51
26 15 6.2 3.4 3.2 62,800 21,500 16,000 23,900 8,970 892 182 49
27 15 6.1 3.4 3.2 63,400 25,000 15,700 24,100 8,170 844 173 46
28 15 5.9 3.4 3.3 62,500 25,800 15,700 27,000 7,550 797 165 45
29 14 4 3.4 3.6 70,700 23,400 14,900 28,300 6,890 752 159 43
30 14   3.4 6 86,700 21,100 14,500 26,200 6,440 713 152 41
31 13   3.2   90,700   14,600 24,300   670   40