US Army Corps of Engineers

Lower Granite Dam

Wednesday January 21, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 12.50 12.50 0.00 736.13 634.22 101.91 736.10 634.55
2 12.40 12.40 0.00 736.33 634.15 102.18 736.35 634.51
3 11.80 11.80 0.00 736.53 634.00 102.53 736.53 634.37
4 11.90 11.90 0.00 736.69 634.11 102.58 736.73 634.42
5 13.00 13.00 0.00 736.79 634.27 102.52 736.98 634.92
6 26.70 26.70 0.00 736.83 634.57 102.26 737.18 634.98
7 42.00 42.00 0.00 736.82 634.61 102.21 737.21 635.06
8 39.70 39.70 0.00 736.82 634.40 102.42 737.07 635.01
9 40.10 40.10 0.00 736.78 634.60 102.18 737.04 635.09
10 40.00 40.00 0.00 736.74 634.63 102.11 737.08 634.88
11 39.60 39.50 0.00 736.75 634.49 102.26 736.98 634.83
12 40.90 40.90 0.00 736.69 634.67 102.02 736.94 635.06
13 40.20 40.20 0.00 736.64 634.43 102.21 736.92 634.70
14 40.10 40.10 0.00 736.63 634.27 102.36 736.83 634.60
15 40.90 40.90 0.00 736.53 634.56 101.97 736.77 634.84
16 42.40 42.40 0.00 736.47 634.27 102.20 736.74 634.57
17 41.80 41.80 0.00 736.39 634.39 102.00 736.60 634.85
18 52.90 52.90 0.00 736.18 634.81 101.37 736.51 635.21
19 53.90 53.90 0.00 736.03 634.36 101.67 736.41 634.66
20 53.30 53.30 0.00 735.87 634.36 101.51 736.13 634.71
21 42.10 42.10 0.00 735.80 634.20 101.60 736.01 634.46
22 32.50 30.80 0.00 735.91 633.54 102.37 736.00 633.90
23 27.10 27.10 0.00 735.95 633.80 102.15 736.08 634.24
24 26.90 26.90 0.00 736.01 634.00 102.01 736.22 634.39
AVG 34.36 34.29 0.00 736.43 634.32 102.11 736.64 634.70
MAX 53.90 53.90 0.00 736.83 634.81 102.58 737.21 635.21
MIN 11.80 11.80 0.00 735.80 633.54 101.37 736.00 633.90
BUILDING STRONG®