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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 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 206.8 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 -> 2024-09-30)

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 41 14 6.4 3.7 13 85,700 22,700 16,500 24,000 6,080 651 149
2 39 14 6.3 3.7 32 79,900 22,900 19,700 23,900 5,930 617 142
3 37 13 6 3.6 99 75,700 21,200 19,500 24,000 6,520 587 137
4 36 13 6 3.6 175 73,000 22,400 20,000 23,800 8,860 553 127
5 35 12 5.8 3.6 123 73,400 19,500 22,400 21,500 8,040 527 123
6 34 12 5.7 3.6 109 71,800 17,100 20,800 20,700 6,290 496 118
7 33 12 5.5 3.5 99 70,300 15,900 18,500 20,600 5,420 478 109
8 31 11 5.4 3.5 90 64,200 15,200 18,000 20,800 4,720 454 105
9 30 11 5.2 3.5 86 58,000 15,500 17,200 19,800 4,140 429 101
10 29 11 5.1 3.5 90 54,700 15,900 16,000 18,900 3,630 405 96
11 28 10 5 3.5 82 52,700 17,200 15,300 17,900 3,270 387 92
12 27 10 4.9 3.5 83 47,700 17,700 15,300 16,300 2,940 363 88
13 26 10 4.8 3.5 86 41,300 17,300 16,500 15,600 2,700 348 85
14 25 9.9 4.8 3.5 1,740 36,300 16,900 20,500 14,800 2,460 331 81
15 24 9.5 4.6 3.5 3,840 32,800 17,300 24,000 14,700 2,110 313 77
16 24 9.3 4.5 3.4 3,330 30,900 18,600 22,600 14,600 1,880 299 74
17 23 8.9 4.5 3.4 5,900 29,000 17,000 20,900 14,100 1,680 287 72
18 22 8.7 4.4 3.4 11,500 26,900 15,800 23,000 13,200 1,520 266 69
19 21 8.5 4.3 3.4 16,200 25,200 15,900 26,900 12,600 1,380 258 67
20 20 8.4 4.2 3.4 19,300 24,900 17,300 26,800 12,300 1,300 245 64
21 20 8.1 4.1 3.4 24,200 24,000 18,900 25,900 12,300 1,220 237 62
22 19 7.9 4 3.5 29,800 23,600 18,200 24,300 11,700 1,140 220 59
23 18 7.6 4 3.5 38,000 23,100 17,500 24,100 11,400 1,070 213 57
24 18 7.4 4 3.5 51,200 24,200 18,300 24,000 10,700 1,010 200 56
25 18 7.1 4 3.5 55,700 22,100 17,600 23,600 9,710 943 194 53
26 17 7 3.9 3.6 62,800 21,500 16,000 23,900 8,970 898 186 51
27 16 6.8 3.9 3.6 63,400 25,000 15,700 24,100 8,170 852 177 49
28 16 6.7 3.8 3.7 62,500 25,800 15,700 27,000 7,550 806 169 47
29 15 7 3.8 3.6 70,700 23,400 14,900 28,300 6,890 762 163 45
30 15   3.8 6 86,700 21,100 14,500 26,200 6,440 723 156 43
31 14   3.7   90,700   14,600 24,300   681   42