US Army Corps of Engineers

Lower Granite Dam

Sunday November 1, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 13.00 12.60 0.00 736.74 636.53 100.21 737.01 636.81
2 12.90 12.50 0.00 736.76 636.45 100.31 737.03 636.75
3 13.00 12.60 0.00 736.77 636.78 99.99 737.10 637.19
4 13.00 12.60 0.00 736.83 636.47 100.36 737.12 636.78
5 13.90 12.80 0.80 736.80 636.43 100.37 737.13 637.14
6 27.30 17.20 9.70 736.72 636.41 100.31 737.19 637.44
7 27.50 17.50 9.60 736.67 636.06 100.61 737.04 636.90
8 27.20 17.20 9.60 736.59 636.27 100.32 736.82 637.28
9 27.00 17.30 9.30 736.44 636.35 100.09 736.81 637.02
10 17.70 17.30 0.00 736.45 636.23 100.22 736.72 636.50
11 12.90 12.50 0.00 736.48 636.75 99.73 736.62 637.18
12 12.70 12.30 0.00 736.40 636.49 99.91 736.75 636.77
13 12.60 12.20 0.00 736.48 636.24 100.24 736.83 636.55
14 12.60 12.20 0.00 736.57 636.87 99.70 736.74 637.25
15 12.70 12.30 0.00 736.54 636.53 100.01 736.82 636.91
16 12.90 12.50 0.00 736.58 636.46 100.12 736.91 636.88
17 17.70 17.30 0.00 736.61 636.88 99.73 736.88 637.30
18 17.90 17.50 0.00 736.58 636.53 100.05 736.85 636.89
19 17.90 17.50 0.00 736.56 636.60 99.96 736.87 637.10
20 18.00 17.60 0.00 736.55 636.73 99.82 736.85 637.15
21 17.80 17.40 0.00 736.54 636.38 100.16 736.81 636.67
22 13.90 13.50 0.00 736.57 636.58 99.99 736.82 636.98
23 13.30 12.90 0.00 736.58 636.65 99.93 736.85 637.08
24 13.10 12.70 0.00 736.62 636.26 100.36 736.90 636.56
AVG 16.60 14.58 1.62 736.60 636.50 100.10 736.89 636.96
MAX 27.50 17.60 9.70 736.83 636.88 100.61 737.19 637.44
MIN 12.60 12.20 0.00 736.40 636.06 99.70 736.62 636.50
BUILDING STRONG®