US Army Corps of Engineers

Lower Granite Dam

Friday August 29, 2025

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 19.40 12.90 6.10 733.57 635.55 98.02 733.90 636.29
2 19.40 12.80 6.20 733.69 635.43 98.26 733.88 636.42
3 19.50 12.80 6.30 733.68 635.59 98.09 733.85 636.57
4 19.60 12.90 6.30 733.68 635.31 98.37 733.84 636.32
5 19.60 12.90 6.30 733.78 635.41 98.37 733.83 636.48
6 19.80 13.00 6.40 733.80 635.54 98.26 733.82 636.50
7 19.60 12.90 6.40 733.79 635.33 98.46 733.83 636.36
8 19.60 12.80 6.40 733.86 635.43 98.43 733.83 636.46
9 19.70 12.80 6.50 733.90 635.46 98.44 733.83 636.47
10 19.80 13.00 6.50 733.86 635.32 98.54 733.84 636.37
11 23.20 16.40 6.50 733.88 635.56 98.32 733.85 636.48
12 23.40 16.50 6.50 733.92 635.52 98.40 733.86 636.33
13 23.30 16.40 6.50 733.92 635.44 98.48 733.86 636.50
14 23.40 16.50 6.50 733.92 635.60 98.32 733.88 636.53
15 23.90 17.00 6.50 733.93 635.48 98.45 733.89 636.41
16 24.00 17.00 6.50 733.93 635.67 98.26 733.90 636.63
17 24.00 17.10 6.50 733.91 635.64 98.27 733.91 636.54
18 24.10 17.20 6.50 733.91 635.56 98.35 733.92 636.48
19 23.90 17.00 6.50 733.91 635.69 98.22 733.93 636.56
20 23.90 17.00 6.50 733.89 635.63 98.26 733.93 636.55
21 23.90 17.10 6.50 733.88 635.57 98.31 733.94 636.46
22 23.80 17.00 6.50 733.89 635.59 98.30 733.94 636.48
23 20.30 13.50 6.50 733.91 635.44 98.47 733.94 636.43
24 20.20 13.30 6.50 733.92 635.48 98.44 733.94 636.50
AVG 21.72 14.91 6.43 733.85 635.51 98.34 733.88 636.46
MAX 24.10 17.20 6.50 733.93 635.69 98.54 733.94 636.63
MIN 19.40 12.80 6.10 733.57 635.31 98.02 733.82 636.29
BUILDING STRONG®