US Army Corps of Engineers

Lower Granite Dam

Friday April 10, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 66.10 11.90 53.80 735.41 633.72 101.69 735.84 635.15
2 66.20 12.00 53.90 735.40 633.67 101.73 735.82 635.23
3 66.20 12.00 53.90 735.39 633.82 101.57 735.81 635.22
4 66.10 11.90 53.80 735.38 633.82 101.56 735.79 635.14
5 66.10 11.90 53.80 735.38 633.79 101.59 735.78 635.15
6 66.20 12.00 53.80 735.37 633.73 101.64 735.76 635.18
7 66.10 12.00 53.70 735.34 633.82 101.52 735.74 635.02
8 66.10 12.00 53.70 735.34 633.72 101.62 735.70 635.11
9 66.00 11.90 53.70 735.31 633.75 101.56 735.70 635.14
10 66.10 12.00 53.70 735.32 633.70 101.62 735.70 635.25
11 66.00 11.90 53.70 735.31 633.87 101.44 735.69 635.16
12 66.10 12.00 53.70 735.27 633.86 101.41 735.71 635.26
13 66.30 12.00 53.90 735.28 633.92 101.36 735.72 635.15
14 66.30 12.00 54.00 735.28 633.97 101.31 735.70 635.28
15 66.20 11.90 53.90 735.22 633.78 101.44 735.70 635.28
16 66.20 11.90 53.80 735.21 633.79 101.42 735.69 635.27
17 67.90 12.00 53.80 735.20 633.91 101.29 735.68 635.10
18 66.20 12.00 53.70 735.14 633.84 101.30 735.67 635.39
19 66.10 12.00 53.70 735.11 633.86 101.25 735.70 635.29
20 66.10 12.00 53.70 735.11 633.99 101.12 735.63 635.23
21 66.10 12.00 53.70 735.07 633.83 101.24 735.60 635.16
22 66.10 12.10 53.60 735.08 633.91 101.17 735.58 635.28
23 66.00 12.00 53.60 735.06 633.81 101.25 735.57 635.37
24 65.70 12.00 53.40 735.06 633.80 101.26 735.55 635.17
AVG 66.19 11.98 53.75 735.25 633.82 101.43 735.70 635.21
MAX 67.90 12.10 54.00 735.41 633.99 101.73 735.84 635.39
MIN 65.70 11.90 53.40 735.06 633.67 101.12 735.55 635.02