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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 15261000 COOPER C AT MOUTH NR COOPER LANDING AK


Kenai Peninsula Borough, Alaska
Hydrologic Unit Code 19020302
Latitude  60°28'50", Longitude 149°52'50" NAD27
Drainage area 16.8  square miles
Gage datum 436.9 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 1957-10-01 -> 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 18 15 13 14 41 114 108 64 49 63 56 29
2 19 15 13 14 42 114 105 63 48 77 53 28
3 19 15 13 13 43 113 102 62 47 82 51 28
4 19 18 13 13 46 112 100 61 46 73 50 27
5 19 20 13 13 48 116 101 59 46 67 51 26
6 18 18 13 13 50 119 102 58 45 65 48 26
7 18 16 13 14 51 120 101 56 45 60 44 28
8 18 16 12 14 55 117 100 55 45 55 42 27
9 18 16 12 14 58 118 97 55 44 55 42 29
10 17 16 12 14 63 119 94 55 45 59 42 28
11 17 15 12 15 67 118 92 53 50 53 37 27
12 17 15 12 15 69 116 90 53 53 51 37 25
13 17 15 12 15 71 116 87 54 52 60 36 25
14 17 15 12 15 72 115 85 55 52 55 35 24
15 17 15 12 16 81 116 83 55 49 50 34 23
16 17 14 12 17 87 122 85 54 49 59 32 22
17 18 14 12 17 87 127 86 53 49 55 32 21
18 18 14 12 18 86 143 85 51 53 52 31 21
19 19 14 12 21 87 146 83 51 56 51 31 20
20 18 14 12 21 89 142 81 50 57 51 32 20
21 18 14 12 21 90 140 79 50 61 55 33 20
22 18 14 12 23 92 140 76 49 77 57 35 20
23 18 14 12 24 99 137 75 49 75 70 39 19
24 19 14 12 26 103 131 74 49 70 69 35 19
25 18 14 13 27 104 126 72 49 65 59 33 19
26 18 14 13 28 108 124 70 48 62 54 31 19
27 18 14 12 31 110 120 69 47 58 50 31 18
28 18 14 12 33 111 116 68 47 57 53 31 18
29 17 14 12 37 110 112 67 48 55 59 31 19
30 17   13 38 112 111 66 46 54 62 33 19
31 17   13   114   66 46   62   19