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USGS Daily Statistics for Idaho

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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 13057500 GRAYS LAKE OUTLET NR HERMAN ID


Bonneville County, Idaho
Hydrologic Unit Code 17040205
Latitude  43°08'05", Longitude 111°29'42" NAD83
Drainage area 137  square miles
Gage datum 6,381.15 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 1915-10-01 -> 2022-09-30)

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 0.42 0.48 0.58 1.1 93 68 22 4.5 1.1 1.3 1.6 0.43
2 0.41 0.47 0.56 1 96 66 21 4.5 1 1.4 1.6 0.45
3 0.42 0.5 0.56 1.4 96 63 20 4.2 1.1 2 1.6 0.48
4 0.42 0.49 0.55 1.4 97 60 20 4 1.1 2.4 1.6 0.49
5 0.48 0.47 0.55 1.4 88 58 19 3.8 1.1 2.4 0.41 0.56
6 0.48 0.48 1 1.5 90 49 18 2.9 1.1 2.5 0.42 0.52
7 0.48 0.53 2.2 1.4 101 53 18 2.8 1.1 2.3 0.41 0.5
8 0.48 0.58 2.2 1.5 92 50 17 2.6 1.1 2.5 0.42 0.5
9 0.44 0.59 0.98 1.6 79 47 16 2.4 1 2.5 0.45 0.46
10 0.5 0.71 0.61 1.8 84 45 14 2.4 1 2.4 0.43 0.44
11 0.49 0.58 0.59 3.5 92 43 13 2.3 1.1 2.4 0.44 0.47
12 0.76 0.54 0.57 3.3 95 41 11 2.1 1 2.3 0.44 0.45
13 0.88 0.53 0.56 3.7 102 39 11 2.2 1 2.3 0.42 0.43
14 0.63 0.53 0.57 4.2 107 38 11 1.8 0.95 2.3 0.42 0.42
15 0.48 0.53 0.58 4.7 107 37 11 1.7 0.96 2.2 0.42 0.41
16 0.42 0.53 0.59 6.8 100 36 10 1.6 0.94 2.2 0.41 0.41
17 0.42 0.54 0.64 8.5 95 35 9.9 1.6 0.99 2.1 0.43 0.44
18 0.43 0.54 0.78 10 101 33 9.5 1.5 1 2.2 0.43 0.46
19 0.45 0.54 0.8 8.3 101 32 9.2 1.4 1 2.7 0.44 0.47
20 0.48 0.54 0.82 23 98 31 8.7 1.4 1 2.4 0.45 0.45
21 0.52 0.56 0.95 24 92 30 8.4 1.4 1.1 2.5 0.46 0.42
22 0.49 0.56 1 45 85 29 8 1.3 1 2.5 0.44 0.46
23 0.44 0.56 0.95 52 83 28 7.8 1.3 1 1.7 0.42 0.45
24 0.49 0.56 0.9 64 84 28 7.3 1.2 1.1 1.7 0.43 0.42
25 0.46 0.57 0.73 97 79 27 6.8 1.2 1 1.8 0.45 0.51
26 0.45 0.56 0.72 74 76 26 6 1.2 1.1 1.7 0.44 0.49
27 0.46 0.57 0.67 75 75 25 5.7 1.1 1.1 1.7 0.44 0.46
28 0.46 0.58 0.65 75 72 24 5.5 1.1 1.1 1.8 0.44 0.47
29 0.47 0.3 0.7 81 71 23 5.1 1.1 1.2 1.6 0.48 0.44
30 0.47   1.2 106 72 22 4.9 1.1 1.1 1.6 0.44 0.42
31 0.47   1.2   73   4.6 1.2   1.6   0.41