US Army Corps of Engineers

Lower Granite Dam

Wednesday August 5, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 28.50 12.70 15.50 735.60 634.33 101.27 735.99 635.41
2 28.50 12.70 15.40 735.59 634.33 101.26 735.98 635.41
3 28.50 12.70 15.40 735.59 634.37 101.22 735.96 635.45
4 28.50 12.70 15.40 735.59 634.46 101.13 735.95 635.48
5 28.40 12.60 15.30 735.60 634.39 101.21 735.94 635.50
6 28.40 12.60 15.30 735.59 634.20 101.39 735.93 635.23
7 28.30 12.60 15.30 735.59 634.38 101.21 735.92 635.40
8 28.30 12.60 15.30 735.61 634.40 101.21 735.92 635.37
9 28.30 12.60 15.30 735.61 634.23 101.38 735.93 635.25
10 28.30 12.60 15.30 735.63 634.23 101.40 735.95 635.30
11 30.10 12.70 15.40 735.58 634.36 101.22 735.98 635.41
12 28.40 12.60 15.50 735.67 634.23 101.44 736.01 635.35
13 28.50 12.60 15.50 735.70 634.30 101.40 736.02 635.34
14 28.70 12.70 15.60 735.69 634.25 101.44 736.07 635.38
15 28.70 12.70 15.60 735.72 634.03 101.69 736.10 635.26
16 30.20 12.50 15.60 735.74 634.25 101.49 736.08 635.22
17 28.40 12.40 15.50 735.69 634.26 101.43 736.09 635.30
18 30.10 12.40 15.50 735.70 633.83 101.87 736.06 634.85
19 28.40 12.50 15.50 735.67 634.15 101.52 736.05 635.28
20 28.30 12.50 15.50 735.65 634.12 101.53 736.06 635.31
21 28.30 12.40 15.50 735.64 634.12 101.52 736.02 635.29
22 28.30 12.40 15.50 735.61 634.29 101.32 736.00 635.34
23 28.30 12.50 15.40 735.58 634.33 101.25 735.98 635.35
24 28.30 12.50 15.40 735.55 634.30 101.25 735.94 635.48
AVG 28.62 12.57 15.44 735.63 634.26 101.38 736.00 635.33
MAX 30.20 12.70 15.60 735.74 634.46 101.87 736.10 635.50
MIN 28.30 12.40 15.30 735.55 633.83 101.13 735.92 634.85
BUILDING STRONG®