US Army Corps of Engineers

Lower Granite Dam

Monday August 3, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 26.90 13.00 13.50 735.39 633.54 101.85 735.83 634.58
2 26.80 13.00 13.40 735.38 633.48 101.90 735.79 634.54
3 26.80 13.00 13.40 735.33 633.54 101.79 735.77 634.53
4 26.80 13.10 13.30 735.31 633.59 101.72 735.75 634.57
5 26.70 13.10 13.30 735.27 633.53 101.74 735.73 634.48
6 26.80 13.10 13.20 735.25 633.44 101.81 735.72 634.59
7 23.80 13.00 10.40 735.26 633.41 101.85 735.71 634.52
8 23.20 13.10 9.70 735.26 633.31 101.95 735.69 634.37
9 24.90 13.10 9.70 735.25 633.22 102.03 735.69 634.39
10 23.20 13.10 9.70 735.27 633.41 101.86 735.69 634.43
11 23.10 13.00 9.70 735.32 633.31 102.01 735.68 634.44
12 23.20 13.10 9.70 735.30 633.32 101.98 735.68 634.45
13 23.20 13.10 9.70 735.36 633.40 101.96 735.70 634.54
14 23.20 13.00 9.80 735.42 633.48 101.94 735.71 634.59
15 23.30 13.00 9.80 735.43 633.50 101.93 735.75 634.60
16 23.30 13.00 9.90 735.45 633.42 102.03 735.80 634.58
17 23.30 13.00 9.90 735.49 633.60 101.89 735.82 634.74
18 25.10 13.10 9.90 735.49 633.71 101.78 735.84 634.84
19 23.50 13.10 9.90 735.47 633.44 102.03 735.86 634.55
20 23.30 13.00 9.90 735.48 634.00 101.48 735.87 635.18
21 23.30 12.90 9.90 735.48 633.70 101.78 735.88 634.79
22 23.30 13.00 9.90 735.48 633.41 102.07 735.88 634.52
23 23.30 13.00 9.90 735.48 633.74 101.74 735.88 634.85
24 23.40 13.10 9.90 735.49 633.57 101.92 735.87 634.70
AVG 24.32 13.04 10.73 735.38 633.50 101.88 735.77 634.60
MAX 26.90 13.10 13.50 735.49 634.00 102.07 735.88 635.18
MIN 23.10 12.90 9.70 735.25 633.22 101.48 735.68 634.37
BUILDING STRONG®