US Army Corps of Engineers

Lower Granite Dam

Friday May 8, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 82.90 12.10 70.50 735.07 634.08 100.99 735.85 635.42
2 83.00 12.10 70.50 735.06 634.20 100.86 735.83 635.35
3 82.90 12.10 70.40 735.04 634.16 100.88 735.83 635.45
4 82.90 12.10 70.40 735.03 634.16 100.87 735.82 635.32
5 82.90 12.10 70.30 735.02 634.17 100.85 735.81 635.34
6 82.90 12.10 70.40 735.02 634.02 101.00 735.82 635.46
7 82.90 12.10 70.40 735.01 634.19 100.82 735.84 635.33
8 82.90 12.10 70.50 735.07 634.16 100.91 735.87 635.56
9 83.00 12.10 70.50 735.14 634.34 100.80 735.89 635.44
10 83.00 12.10 70.50 735.15 634.22 100.93 735.96 635.49
11 85.90 12.10 73.40 735.21 634.60 100.61 736.02 635.77
12 86.50 12.10 73.90 735.22 634.59 100.63 736.06 635.91
13 86.70 12.20 74.10 735.24 634.48 100.76 736.09 635.73
14 86.60 12.10 74.10 735.28 634.57 100.71 736.14 635.78
15 86.70 12.10 74.20 735.33 634.65 100.68 736.18 635.77
16 90.80 12.20 78.20 735.29 634.65 100.64 736.22 635.96
17 92.10 12.10 79.50 735.31 634.55 100.76 736.24 635.97
18 92.20 12.20 79.60 735.29 634.39 100.90 736.20 635.76
19 92.20 12.20 79.60 735.24 634.69 100.55 736.26 635.87
20 92.10 12.10 79.60 735.29 634.37 100.92 736.25 635.94
21 92.10 12.10 79.60 735.29 634.31 100.98 736.16 635.63
22 92.00 12.10 79.60 735.25 634.14 101.11 736.17 635.62
23 92.10 12.10 79.50 735.25 634.30 100.95 736.16 635.54
24 91.90 12.10 79.50 735.23 634.03 101.20 736.12 635.43
AVG 87.05 12.12 74.53 735.18 634.33 100.85 736.03 635.62
MAX 92.20 12.20 79.60 735.33 634.69 101.20 736.26 635.97
MIN 82.90 12.10 70.30 735.01 634.02 100.55 735.81 635.32
BUILDING STRONG®