US Army Corps of Engineers

Lower Granite Dam

Tuesday June 16, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 40.50 12.20 27.90 735.97 633.70 102.27 736.37 634.56
2 40.40 12.20 27.80 735.93 633.69 102.24 736.38 634.51
3 40.30 12.20 27.70 735.93 633.68 102.25 736.34 634.46
4 40.30 12.20 27.70 735.91 633.48 102.43 736.31 634.33
5 40.20 12.20 27.60 735.88 633.73 102.15 736.29 634.54
6 40.20 12.20 27.60 735.86 633.56 102.30 736.28 634.45
7 40.10 12.10 27.60 735.84 633.62 102.22 736.24 634.50
8 40.30 12.20 27.80 735.82 633.65 102.17 736.22 634.57
9 40.40 12.20 27.80 735.78 633.74 102.04 736.19 634.51
10 40.70 12.30 28.00 735.74 633.84 101.90 736.19 634.69
11 40.50 12.20 27.90 735.71 633.76 101.95 736.24 634.53
12 38.90 12.20 26.30 735.69 633.76 101.93 736.30 634.50
13 38.70 12.30 26.10 735.76 633.78 101.98 736.32 634.51
14 38.70 12.20 26.10 735.73 633.80 101.93 736.36 634.58
15 38.80 12.20 26.10 735.72 633.53 102.19 736.38 634.46
16 38.80 12.30 26.10 735.74 633.78 101.96 736.35 634.58
17 38.80 12.30 26.10 735.71 633.91 101.80 736.33 634.62
18 38.80 12.30 26.00 735.66 633.71 101.95 736.36 634.57
19 38.70 12.30 26.00 735.69 633.85 101.84 736.30 634.62
20 38.60 12.20 26.00 735.70 633.76 101.94 736.19 634.61
21 38.50 12.20 25.90 735.63 633.78 101.85 736.21 634.57
22 40.20 12.20 25.80 735.65 633.95 101.70 736.18 634.77
23 38.60 12.30 25.90 735.63 633.85 101.78 736.10 634.71
24 38.40 12.20 25.70 735.57 633.72 101.85 736.11 634.56
AVG 39.52 12.22 26.81 735.76 633.73 102.03 736.27 634.55
MAX 40.70 12.30 28.00 735.97 633.95 102.43 736.38 634.77
MIN 38.40 12.10 25.70 735.57 633.48 101.70 736.10 634.33
BUILDING STRONG®