US Army Corps of Engineers

Lower Granite Dam

Thursday January 22, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 27.20 27.20 0.00 736.19 633.62 102.57 736.23 634.06
2 26.90 26.90 0.00 736.21 633.84 102.37 736.29 634.34
3 27.10 27.10 0.00 736.26 633.93 102.33 736.41 634.28
4 27.10 27.10 0.00 736.34 633.72 102.62 736.43 634.10
5 27.40 27.40 0.00 736.35 633.95 102.40 736.48 634.53
6 41.60 41.60 0.00 736.23 634.43 101.80 736.56 634.76
7 42.10 42.10 0.00 736.24 634.24 102.00 736.43 634.52
8 41.90 41.90 0.00 736.15 634.12 102.03 736.28 634.68
9 42.40 42.40 0.00 735.98 634.37 101.61 736.32 634.69
10 41.70 41.70 0.00 736.01 634.02 101.99 736.22 634.24
11 27.90 27.90 0.00 736.15 633.73 102.42 736.13 634.26
12 27.10 27.10 0.00 736.10 634.16 101.94 736.27 634.55
13 27.30 27.30 0.00 736.23 633.84 102.39 736.42 634.08
14 27.20 27.20 0.00 736.35 633.71 102.64 736.36 634.14
15 27.30 27.30 0.00 736.32 634.06 102.26 736.43 634.52
16 27.70 27.70 0.00 736.35 633.80 102.55 736.57 634.15
17 41.50 41.50 0.00 736.28 634.31 101.97 736.56 634.62
18 42.20 42.20 0.00 736.23 634.07 102.16 736.42 634.40
19 42.10 42.10 0.00 736.11 633.91 102.20 736.32 634.39
20 42.20 42.20 0.00 735.97 634.25 101.72 736.28 634.58
21 41.90 41.90 0.00 735.92 633.99 101.93 736.21 634.28
22 43.60 41.90 0.00 735.85 634.20 101.65 736.10 634.12
23 28.00 28.00 0.00 735.97 633.90 102.07 736.05 634.31
24 27.10 27.10 0.00 735.97 633.75 102.22 736.12 634.17
AVG 34.10 34.03 0.00 736.16 634.00 102.16 736.33 634.37
MAX 43.60 42.40 0.00 736.35 634.43 102.64 736.57 634.76
MIN 26.90 26.90 0.00 735.85 633.62 101.61 736.05 634.06
BUILDING STRONG®