US Army Corps of Engineers

Lower Granite Dam

Sunday August 2, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 27.20 13.00 13.90 735.74 633.68 102.06 736.21 634.69
2 27.30 13.00 13.80 735.67 633.91 101.76 736.22 634.87
3 28.80 13.00 13.70 735.65 633.99 101.66 736.18 634.98
4 27.20 13.10 13.70 735.64 633.68 101.96 736.08 634.71
5 27.10 13.10 13.60 735.57 634.05 101.52 736.05 635.00
6 27.00 13.00 13.60 735.55 633.84 101.71 736.04 634.76
7 27.00 13.00 13.50 735.52 633.97 101.55 735.98 635.06
8 27.00 13.00 13.50 735.52 633.99 101.53 735.96 635.06
9 27.10 13.20 13.50 735.52 633.91 101.61 735.95 634.91
10 27.00 13.10 13.60 735.50 633.98 101.52 735.98 634.96
11 27.00 13.00 13.60 735.57 633.96 101.61 736.00 635.02
12 27.00 13.00 13.60 735.56 633.99 101.57 736.03 634.95
13 27.20 13.10 13.60 735.58 633.92 101.66 736.06 634.87
14 27.20 13.10 13.70 735.62 633.90 101.72 736.07 634.98
15 27.10 13.00 13.70 735.61 633.89 101.72 736.07 634.92
16 27.10 13.00 13.70 735.62 633.91 101.71 736.08 634.92
17 27.10 13.00 13.70 735.62 633.89 101.73 736.07 634.90
18 27.20 13.10 13.70 735.59 633.79 101.80 736.06 634.84
19 27.20 13.10 13.60 735.57 633.65 101.92 736.05 634.76
20 27.10 13.00 13.60 735.55 633.63 101.92 736.00 634.74
21 27.00 13.00 13.60 735.51 633.51 102.00 735.95 634.66
22 27.00 13.00 13.60 735.49 633.48 102.01 735.92 634.50
23 27.00 13.10 13.50 735.46 633.44 102.02 735.90 634.50
24 26.90 13.00 13.50 735.43 633.50 101.93 735.87 634.56
AVG 27.16 13.04 13.63 735.57 633.81 101.76 736.03 634.84
MAX 28.80 13.20 13.90 735.74 634.05 102.06 736.22 635.06
MIN 26.90 13.00 13.50 735.43 633.44 101.52 735.87 634.50
BUILDING STRONG®