US Army Corps of Engineers

Lower Granite Dam

Saturday May 2, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 69.40 12.10 56.90 735.07 633.32 101.75 735.70 634.47
2 69.30 12.10 56.90 735.04 633.38 101.66 735.69 634.43
3 69.40 12.10 56.90 735.02 633.38 101.64 735.68 634.44
4 69.30 12.00 56.90 734.98 633.19 101.79 735.67 634.46
5 69.30 12.10 56.80 734.92 633.26 101.66 735.66 634.47
6 69.20 12.10 56.80 734.89 633.15 101.74 735.64 634.27
7 69.10 12.00 56.70 734.87 633.11 101.76 735.63 634.29
8 69.10 12.10 56.70 734.86 633.09 101.77 735.62 634.26
9 69.00 12.00 56.60 734.85 633.05 101.80 735.60 634.30
10 69.00 12.00 56.50 734.86 633.09 101.77 735.58 634.22
11 69.00 12.00 56.60 734.87 632.92 101.95 735.57 634.32
12 69.10 12.10 56.60 734.89 633.10 101.79 735.57 634.36
13 69.10 12.10 56.60 734.90 633.17 101.73 735.57 634.30
14 69.10 12.10 56.70 734.91 633.18 101.73 735.56 634.37
15 69.20 12.10 56.70 734.90 633.16 101.74 735.56 634.52
16 69.20 12.10 56.70 734.90 633.24 101.66 735.56 634.51
17 69.10 12.10 56.60 734.89 633.38 101.51 735.55 634.61
18 70.90 12.20 56.60 734.89 633.42 101.47 735.55 634.56
19 69.20 12.20 56.60 734.88 633.33 101.55 735.56 634.57
20 69.00 12.10 56.60 734.88 633.42 101.46 735.56 634.59
21 69.00 12.10 56.60 734.90 633.45 101.45 735.56 634.70
22 69.10 12.10 56.60 734.90 633.59 101.31 735.56 634.59
23 69.10 12.00 56.60 734.90 633.53 101.37 735.55 634.69
24 68.70 12.10 56.20 734.91 633.40 101.51 735.55 634.35
AVG 69.20 12.08 56.67 734.91 633.26 101.65 735.60 634.44
MAX 70.90 12.20 56.90 735.07 633.59 101.95 735.70 634.70
MIN 68.70 12.00 56.20 734.85 632.92 101.31 735.55 634.22