US Army Corps of Engineers

Lower Granite Dam

Friday December 5, 2025

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 12.50 12.10 0.00 735.86 635.74 100.12 736.03 636.04
2 12.50 12.10 0.00 735.91 635.07 100.84 736.19 635.46
3 12.50 12.10 0.00 736.05 635.62 100.43 736.15 636.00
4 13.60 13.20 0.00 735.94 635.79 100.15 736.20 636.55
5 27.90 27.50 0.00 735.86 635.56 100.30 736.33 635.95
6 39.10 38.70 0.00 735.74 635.58 100.16 736.12 635.98
7 40.70 40.30 0.00 735.52 635.89 99.63 735.87 636.27
8 40.40 40.00 0.00 735.26 635.64 99.62 735.68 636.06
9 27.50 27.10 0.00 735.26 635.17 100.09 735.56 635.57
10 13.90 13.50 0.00 735.33 635.34 99.99 735.53 635.69
11 13.70 13.30 0.00 735.27 635.54 99.73 735.52 635.74
12 13.60 13.20 0.00 735.37 635.02 100.35 735.60 635.40
13 13.50 13.10 0.00 735.50 635.27 100.23 735.57 635.65
14 13.50 13.10 0.00 735.46 635.34 100.12 735.62 635.76
15 14.00 13.60 0.00 735.46 635.24 100.22 735.75 635.80
16 26.20 25.80 0.00 735.42 635.85 99.57 735.71 636.30
17 27.20 26.80 0.00 735.32 635.54 99.78 735.60 635.92
18 27.10 26.70 0.00 735.22 635.43 99.79 735.57 635.93
19 27.30 26.90 0.00 735.09 635.85 99.24 735.54 636.22
20 27.20 26.80 0.00 734.98 635.42 99.56 735.53 635.73
21 26.80 26.40 0.00 734.92 635.83 99.09 735.51 636.10
22 14.10 13.70 0.00 734.98 635.75 99.23 735.49 636.10
23 13.60 13.20 0.00 734.99 635.47 99.52 735.47 635.82
24 15.20 13.10 0.00 735.07 635.65 99.42 735.47 636.03
AVG 21.40 20.93 0.00 735.41 635.52 99.88 735.73 635.92
MAX 40.70 40.30 0.00 736.05 635.89 100.84 736.33 636.55
MIN 12.50 12.10 0.00 734.92 635.02 99.09 735.47 635.40
BUILDING STRONG®