US Army Corps of Engineers

Lower Granite Dam

Friday July 31, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 25.00 12.50 12.10 735.78 633.77 102.01 736.14 634.85
2 24.90 12.40 12.10 735.76 633.54 102.22 736.14 634.71
3 25.00 12.50 12.10 735.75 633.51 102.24 736.15 634.66
4 25.10 12.60 12.10 735.77 633.57 102.20 736.13 634.71
5 25.40 12.60 12.50 735.74 633.81 101.93 736.12 634.93
6 26.80 12.60 13.80 735.71 633.73 101.98 736.14 634.85
7 26.70 12.50 13.80 735.74 633.73 102.01 736.11 634.89
8 26.80 12.60 13.80 735.77 633.97 101.80 736.07 635.00
9 26.90 12.70 13.90 735.74 633.84 101.90 736.13 634.94
10 26.90 12.60 13.90 735.77 633.97 101.80 736.17 635.05
11 27.00 12.70 13.90 735.81 634.19 101.62 736.19 635.13
12 27.10 12.70 14.00 735.85 634.22 101.63 736.24 635.15
13 27.10 12.70 14.00 735.89 634.16 101.73 736.28 635.20
14 27.10 12.70 14.10 735.92 634.16 101.76 736.29 635.27
15 27.20 12.70 14.10 735.94 633.99 101.95 736.31 635.20
16 28.80 12.60 14.10 735.94 634.70 101.24 736.33 635.63
17 27.10 12.60 14.10 735.94 634.07 101.87 736.32 635.23
18 27.10 12.60 14.10 735.94 633.76 102.18 736.31 634.90
19 27.10 12.60 14.10 735.91 633.90 102.01 736.31 635.02
20 26.60 12.10 14.10 735.91 633.61 102.30 736.29 634.73
21 26.40 11.90 14.10 735.88 633.25 102.63 736.28 634.32
22 26.40 12.00 14.00 735.86 633.55 102.31 736.28 634.51
23 26.50 12.10 14.00 735.84 633.65 102.19 736.25 634.72
24 26.40 12.00 14.00 735.80 633.66 102.14 736.22 634.63
AVG 26.56 12.48 13.62 735.83 633.85 101.99 736.22 634.93
MAX 28.80 12.70 14.10 735.94 634.70 102.63 736.33 635.63
MIN 24.90 11.90 12.10 735.71 633.25 101.24 736.07 634.32