US Army Corps of Engineers

Lower Granite Dam

Saturday June 20, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 33.40 12.20 20.80 735.91 634.01 101.90 736.35 635.17
2 35.00 12.10 20.70 735.91 633.80 102.11 736.32 635.04
3 33.30 12.20 20.70 735.92 633.73 102.19 736.29 634.95
4 33.10 12.10 20.60 735.86 634.09 101.77 736.29 635.38
5 33.10 12.20 20.50 735.88 633.90 101.98 736.26 634.98
6 33.00 12.10 20.50 735.87 633.77 102.10 736.25 634.83
7 33.00 12.10 20.50 735.85 634.07 101.78 736.25 635.24
8 33.00 12.10 20.50 735.83 633.93 101.90 736.22 635.16
9 33.10 12.20 20.50 735.82 634.07 101.75 736.21 635.16
10 33.10 12.20 20.40 735.79 634.01 101.78 736.25 635.22
11 33.00 12.20 20.40 735.78 634.13 101.65 736.26 635.26
12 33.00 12.20 20.50 735.77 634.17 101.60 736.28 635.29
13 33.10 12.20 20.50 735.75 634.12 101.63 736.32 635.33
14 33.20 12.20 20.60 735.78 634.16 101.62 736.37 635.39
15 33.30 12.30 20.60 735.78 634.20 101.58 736.41 635.35
16 33.30 12.20 20.70 735.81 634.15 101.66 736.36 635.22
17 33.40 12.20 20.70 735.67 634.23 101.44 736.34 635.39
18 35.10 12.30 20.70 735.75 634.10 101.65 736.33 635.26
19 33.40 12.30 20.70 735.73 634.06 101.67 736.31 635.22
20 33.20 12.20 20.70 735.72 634.18 101.54 736.21 635.40
21 33.20 12.20 20.60 735.71 634.07 101.64 736.16 635.29
22 33.10 12.20 20.50 735.68 634.25 101.43 736.12 635.38
23 33.10 12.30 20.40 735.63 634.18 101.45 736.09 635.38
24 33.00 12.20 20.30 735.60 634.25 101.35 736.05 635.29
AVG 33.31 12.20 20.57 735.78 634.07 101.72 736.26 635.23
MAX 35.10 12.30 20.80 735.92 634.25 102.19 736.41 635.40
MIN 33.00 12.10 20.30 735.60 633.73 101.35 736.05 634.83
BUILDING STRONG®