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USGS Daily Statistics for New Hampshire

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To view real-time groundwater levels in New Hampshire. click here

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 -> 2019-09-30)

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 29 28 41 108 58 34 54 21 8.4 89 47 92
2 37 21 58 100 68 50 85 13 29 65 56 84
3 27 23 39 115 53 51 65 13 11 54 98 80
4 24 32 28 126 47 26 34 10 8.2 36 51 48
5 24 24 24 101 51 26 24 11 12 23 56 38
6 27 19 29 102 64 51 15 7.9 26 16 54 55
7 28 17 101 122 51 43 12 5.2 37 28 48 45
8 22 15 63 133 69 30 14 4.6 29 24 34 53
9 20 15 66 122 67 22 13 4.8 14 19 33 37
10 62 14 66 163 53 21 17 8.7 8 16 39 71
11 51 14 94 235 41 29 16 10 9 24 31 61
12 109 17 81 211 32 44 12 10 10 20 25 108
13 111 20 98 178 27 37 8.9 24 16 17 37 98
14 46 15 71 179 51 30 7.8 22 21 44 48 45
15 46 14 78 171 71 20 7.8 18 11 91 50 47
16 33 18 62 139 60 19 7.7 27 7.3 91 45 53
17 28 26 71 187 84 19 6.3 11 7.1 47 56 43
18 24 18 98 115 63 14 7.8 16 8.5 28 44 51
19 35 18 100 97 73 39 8.1 9.3 15 33 37 50
20 25 20 77 99 46 20 9.3 5.7 5.9 44 76 34
21 21 40 60 122 37 15 6.1 6.7 4.8 25 42 62
22 20 39 48 98 42 12 16 45 6.6 24 29 63
23 23 26 86 125 38 17 25 19 5.9 51 27 48
24 32 43 55 91 31 20 30 9.2 6.6 61 33 67
25 59 121 41 88 42 20 21 13 9.1 63 41 69
26 54 100 43 126 80 28 29 12 14 110 50 43
27 29 43 55 87 38 16 15 6.6 19 56 69 63
28 25 39 62 69 50 82 34 166 31 60 58 88
29 20 43 98 59 39 80 30 47 33 76 40 53
30 18   142 46 35 37 34 16 70 286 77 36
31 53   132   39   35 9.9   80   31