US Army Corps of Engineers

Lower Granite Dam

Saturday August 1, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 26.30 12.00 13.90 735.78 633.70 102.08 736.21 634.74
2 26.30 12.00 13.90 735.75 633.75 102.00 736.19 634.82
3 26.20 12.00 13.90 735.75 633.77 101.98 736.16 634.82
4 26.30 12.00 13.90 735.75 633.82 101.93 736.13 634.95
5 26.30 12.10 13.80 735.73 633.89 101.84 736.12 634.92
6 26.20 12.00 13.80 735.73 633.97 101.76 736.14 634.97
7 26.30 12.00 13.80 735.77 634.19 101.58 736.14 635.12
8 26.40 12.10 13.90 735.81 634.00 101.81 736.17 635.09
9 26.40 12.10 13.90 735.81 634.21 101.60 736.20 635.18
10 26.50 12.10 14.00 735.84 633.91 101.93 736.24 634.99
11 27.00 12.60 14.00 735.85 634.14 101.71 736.29 635.18
12 27.10 12.70 14.00 735.87 634.22 101.65 736.35 635.14
13 27.00 12.60 14.00 735.87 634.07 101.80 736.40 635.16
14 27.30 12.90 14.00 735.88 634.19 101.69 736.45 635.29
15 27.10 12.70 14.00 735.87 634.14 101.73 736.45 635.20
16 27.00 12.60 14.00 735.86 634.06 101.80 736.51 635.16
17 26.90 12.50 14.00 735.90 634.08 101.82 736.62 635.14
18 28.70 12.60 14.10 735.91 633.73 102.18 736.55 634.70
19 27.10 12.60 14.10 735.92 633.90 102.02 736.46 634.97
20 27.40 12.90 14.00 735.84 633.90 101.94 736.44 634.94
21 27.30 12.90 14.00 735.83 633.85 101.98 736.40 634.79
22 27.40 13.00 14.00 735.84 633.54 102.30 736.35 634.57
23 27.40 13.00 13.90 735.76 633.74 102.02 736.33 634.81
24 27.30 13.00 13.90 735.74 633.86 101.88 736.30 634.82
AVG 26.88 12.46 13.95 735.82 633.94 101.88 736.32 634.98
MAX 28.70 13.00 14.10 735.92 634.22 102.30 736.62 635.29
MIN 26.20 12.00 13.80 735.73 633.54 101.58 736.12 634.57