US Army Corps of Engineers

Lower Granite Dam

Saturday October 31, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 13.10 12.70 0.00 736.75 636.52 100.23 736.99 637.02
2 13.10 12.70 0.00 736.76 636.55 100.21 737.01 636.96
3 13.10 12.70 0.00 736.79 636.50 100.29 737.08 636.88
4 13.10 12.70 0.00 736.84 636.64 100.20 737.11 637.07
5 13.80 12.90 0.40 736.84 636.60 100.24 737.12 637.32
6 27.30 17.20 9.70 736.72 636.28 100.44 737.17 637.26
7 27.50 17.40 9.70 736.69 636.10 100.59 737.03 636.94
8 27.30 17.20 9.60 736.64 636.27 100.37 736.83 637.38
9 23.00 13.30 9.40 736.53 636.22 100.31 736.79 636.85
10 13.00 12.60 0.00 736.56 636.25 100.31 736.73 636.55
11 13.00 12.60 0.00 736.56 636.57 99.99 736.74 636.94
12 13.00 12.60 0.00 736.55 636.37 100.18 736.86 636.67
13 12.90 12.50 0.00 736.63 636.28 100.35 736.85 636.63
14 13.00 12.60 0.00 736.70 636.67 100.03 736.86 637.12
15 13.10 12.70 0.00 736.64 636.39 100.25 736.94 636.74
16 13.10 12.70 0.00 736.70 636.47 100.23 736.97 637.04
17 14.80 12.70 0.00 736.76 636.88 99.88 736.95 637.56
18 17.50 17.10 0.00 736.66 636.50 100.16 737.02 636.86
19 17.70 17.30 0.00 736.68 636.64 100.04 737.02 637.05
20 17.80 17.40 0.00 736.68 636.90 99.78 736.94 637.14
21 17.80 17.40 0.00 736.59 636.49 100.10 736.98 636.75
22 17.70 17.30 0.00 736.62 636.48 100.14 737.00 636.83
23 17.70 17.30 0.00 736.64 636.54 100.10 736.92 636.78
24 13.80 13.40 0.00 736.64 636.32 100.32 736.95 636.59
1 13.00 12.60 0.00 736.64 636.60 100.04 737.01 637.06
AVG 16.41 14.38 1.55 736.67 636.48 100.19 736.95 636.96
MAX 27.50 17.40 9.70 736.84 636.90 100.59 737.17 637.56
MIN 12.90 12.50 0.00 736.53 636.10 99.78 736.73 636.55
BUILDING STRONG®