US Army Corps of Engineers

Lower Granite Dam

Thursday February 5, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 13.80 13.80 0.00 736.67 637.05 99.62 736.82 637.43
2 13.80 13.80 0.00 736.79 636.60 100.19 736.98 636.99
3 13.80 13.80 0.00 736.97 636.67 100.30 737.05 637.06
4 14.30 14.30 0.00 736.96 637.24 99.72 737.14 637.74
5 27.20 27.20 0.00 736.86 637.13 99.73 737.27 637.65
6 43.30 43.30 0.00 736.76 637.07 99.69 737.19 637.47
7 43.50 43.50 0.00 736.59 637.13 99.46 736.89 637.51
8 42.90 42.90 0.00 736.32 637.12 99.20 736.68 637.55
9 27.80 27.80 0.00 736.39 636.36 100.03 736.56 636.75
10 14.10 14.10 0.00 736.49 636.63 99.86 736.50 637.05
11 13.60 13.60 0.00 736.50 636.78 99.72 736.72 637.18
12 13.50 13.50 0.00 736.70 636.32 100.38 736.90 636.71
13 13.50 13.50 0.00 736.85 636.80 100.05 736.91 637.20
14 13.60 13.60 0.00 736.89 636.95 99.94 737.09 637.32
15 13.60 13.50 0.00 737.04 636.52 100.52 737.25 636.93
16 14.80 14.70 0.00 737.17 637.28 99.89 737.31 637.76
17 28.60 28.50 0.00 737.01 637.52 99.49 737.41 637.93
18 40.00 39.90 0.00 736.93 636.92 100.01 737.46 637.28
19 40.20 40.10 0.00 736.88 637.28 99.60 737.17 637.70
20 40.50 40.40 0.00 736.66 637.37 99.29 737.06 637.78
21 40.40 40.30 0.00 736.53 636.81 99.72 737.04 637.22
22 42.00 40.20 0.00 736.52 637.51 99.01 736.85 637.70
23 40.30 40.20 0.00 736.42 636.78 99.64 736.68 637.31
24 27.10 27.00 0.00 736.48 636.04 100.44 736.64 636.60
AVG 26.51 26.40 0.00 736.72 636.91 99.81 736.98 637.33
MAX 43.50 43.50 0.00 737.17 637.52 100.52 737.46 637.93
MIN 13.50 13.50 0.00 736.32 636.04 99.01 736.50 636.60
BUILDING STRONG®