US Army Corps of Engineers

Lower Granite Dam & Lake

July 2024

Day of MonthTotal Generation MWhAverage Generation MWStation Use MWhInflow kcfsTotal Outflow kcfsGeneration Flow kcfsSpill kcfsMidnight Reservoir ElevationAverage Forebay ElevationAverage Tailwater ElevationAverage Head feetMidnight Lewiston Gage ft
1 2919 122 42 35.80 34.90 16.30 18.00 733.73 733.64 633.40 100.24 733.96
2 3383 141 43 37.80 37.50 19.00 18.10 733.77 733.72 633.47 100.25 734.03
3 3468 144 41 37.50 38.20 19.40 18.20 733.60 733.82 633.24 100.58 734.10
4 3695 154 42 39.40 39.30 20.70 18.10 733.64 733.68 633.31 100.37 733.94
5 3365 140 42 37.90 37.60 18.80 18.20 733.69 733.72 633.36 100.36 733.92
6 3312 138 42 37.50 37.20 18.60 18.10 733.76 733.70 633.38 100.32 733.93
7 3772 157 42 39.20 39.70 21.20 18.10 733.63 733.68 633.34 100.34 733.87
8 3729 155 42 38.70 39.60 20.90 18.20 733.40 733.78 633.50 100.28 733.93
9 3454 144 43 39.20 38.00 19.40 18.20 733.70 733.76 633.83 99.93 733.97
10 3578 149 42 38.40 38.90 20.00 18.30 733.57 733.85 633.54 100.31 734.07
11 3755 156 42 38.90 39.80 21.10 18.20 733.30 733.80 633.93 99.87 734.04
12 3088 129 42 36.10 36.10 17.40 18.00 733.34 733.61 633.65 99.96 733.84
13 2996 125 42 36.30 35.40 16.80 18.10 733.54 733.67 633.56 100.11 733.87
14 2994 125 42 35.60 35.30 16.80 18.10 733.60 733.73 633.70 100.03 733.93
15 2798 117 42 34.20 34.30 15.70 18.10 733.62 733.69 634.06 99.63 733.92
16 2900 121 42 35.20 34.90 16.30 18.20 733.69 733.83 633.76 100.07 734.00
17 3165 132 42 35.10 36.50 17.70 18.20 733.33 733.83 633.40 100.43 734.00
18 2833 118 42 34.50 34.20 15.90 18.00 733.42 733.55 633.49 100.06 733.85
19 36.50 37.20 18.40 18.10 733.23 733.67 633.83 99.84 733.86
20 35.20 34.40 15.90 17.90 733.43 733.53 633.71 99.82 733.76
21 34.30 34.40 15.80 18.20 733.43 733.77 633.62 100.15 733.97
22 32.60 33.20 14.70 17.90 733.26 733.56 633.58 99.98 733.80
23 32.90 33.20 14.90 17.90 733.23 733.54 633.74 99.80 733.78
24 32.20 31.60 13.30 17.80 733.38 733.49 633.87 99.62 733.74
25 30.00 30.20 11.90 17.80 733.33 733.48 633.81 99.67 733.82
26
27
28
29
30
31
TOT 59202  757         
AVG 3289 137 42 36.04 36.06 17.48 18.08 733.50 733.68 633.60 100.08 733.92
MAX 3772   39.40 39.80 21.20 18.30 733.77 733.85 634.06 100.58 734.10
MIN 2798   30.00 30.20 11.90 17.80 733.23 733.48 633.24 99.62 733.74
BUILDING STRONG®