US Army Corps of Engineers

Lower Granite Dam

Thursday December 4, 2025

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 13.00 12.60 0.00 736.29 636.29 100.00 736.40 636.63
2 13.10 12.70 0.00 736.29 635.96 100.33 736.40 636.43
3 13.00 12.60 0.00 736.39 635.92 100.47 736.40 636.23
4 13.00 12.60 0.00 736.46 636.38 100.08 736.40 636.82
5 14.00 13.60 0.00 736.36 636.29 100.07 736.40 637.13
6 27.00 26.60 0.00 736.32 636.42 99.90 736.40 636.94
7 27.20 26.80 0.00 736.31 636.18 100.13 736.40 636.55
8 34.40 34.00 0.00 736.08 636.67 99.41 736.40 637.13
9 34.30 33.90 0.00 735.95 636.18 99.77 736.40 636.55
10 27.30 26.90 0.00 735.96 635.98 99.98 736.30 636.45
11 26.30 25.90 0.00 735.87 636.28 99.59 736.10 636.27
12 13.50 13.10 0.00 735.89 635.78 100.11 736.10 636.10
13 12.50 12.10 0.00 735.97 635.84 100.13 736.13 636.31
14 12.60 12.20 0.00 735.99 636.02 99.97 736.22 636.33
15 13.10 12.70 0.00 736.02 635.72 100.30 736.26 636.22
16 27.10 26.70 0.00 735.91 636.34 99.57 736.30 636.87
17 27.20 26.80 0.00 735.89 635.95 99.94 736.15 636.34
18 27.20 26.80 0.00 735.78 635.99 99.79 736.02 636.50
19 27.20 26.80 0.00 735.63 636.31 99.32 736.02 636.73
20 27.10 26.70 0.00 735.60 635.77 99.83 735.96 636.12
21 13.70 13.30 0.00 735.75 635.59 100.16 735.78 635.95
22 12.50 12.10 0.00 735.66 635.92 99.74 735.89 636.29
23 12.50 12.10 0.00 735.74 635.32 100.42 736.03 635.44
24 14.10 12.00 0.00 735.92 635.24 100.68 735.95 636.05
AVG 20.12 19.65 0.00 736.00 636.01 99.99 736.20 636.43
MAX 34.40 34.00 0.00 736.46 636.67 100.68 736.40 637.13
MIN 12.50 12.00 0.00 735.60 635.24 99.32 735.78 635.44
BUILDING STRONG®