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USGS Daily Statistics for New Hampshire

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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 01077400 COCKERMOUTH RIVER BELOW HARDY BROOK, AT GROTON, NH


Grafton County, New Hampshire
Hydrologic Unit Code 01070001
Latitude  43°42'14", Longitude  71°50'00" NAD83
Drainage area 21.4  square miles
Gage datum 608.42 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 2007-10-01 -> 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 49 25 35 120 155 28 50 18 8.1 63 62 119
2 46 20 47 101 88 39 68 20 29 46 55 79
3 34 21 34 119 77 40 58 13 13 39 81 79
4 33 28 31 122 66 23 32 13 8.6 27 45 52
5 38 24 26 99 63 25 21 13 10 18 48 41
6 33 23 28 104 65 49 14 8.3 20 13 45 52
7 30 19 79 122 51 36 11 7.4 27 22 41 59
8 24 20 57 141 61 25 14 15 21 19 31 54
9 22 20 56 128 58 24 21 10 12 15 29 39
10 49 19 61 148 54 20 72 9.5 7.6 13 34 72
11 44 18 84 192 44 28 83 14 8.9 18 28 60
12 108 19 74 182 35 35 61 9.9 12 16 38 90
13 97 22 94 192 29 33 22 19 15 18 42 78
14 46 17 68 180 47 26 22 17 18 45 46 86
15 41 16 68 175 62 18 14 14 9.8 71 45 60
16 32 19 60 132 65 17 14 20 7.4 70 45 51
17 27 28 66 157 79 18 12 9 7 61 50 43
18 24 35 95 104 55 14 18 17 9.3 31 39 47
19 31 25 97 109 61 30 16 12 19 29 36 43
20 24 23 86 130 60 26 15 7.3 8.8 36 64 32
21 20 35 69 123 49 25 23 8.9 6.1 22 38 77
22 20 33 57 96 40 14 18 34 9.5 21 29 94
23 22 38 83 136 35 15 23 16 7.3 46 29 132
24 51 43 64 104 31 17 25 9.7 11 50 35 76
25 65 90 72 92 36 20 19 17 11 51 43 145
26 51 76 80 111 64 34 23 13 13 99 50 63
27 31 47 72 119 33 37 13 9 16 64 65 58
28 26 39 81 76 43 69 25 115 23 60 79 73
29 21 46 103 65 39 65 25 37 25 65 45 49
30 19   124 74 32 38 32 17 51 222 105 37
31 42   124   33   28 10   114   38