US Army Corps of Engineers

Lower Granite Dam

Saturday January 31, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 13.90 13.90 0.00 736.18 635.70 100.48 736.33 636.04
2 13.90 13.90 0.00 736.38 635.73 100.65 736.46 636.14
3 13.80 13.80 0.00 736.52 635.89 100.63 736.57 636.27
4 14.20 14.20 0.00 736.61 635.83 100.78 736.76 636.29
5 27.00 27.00 0.00 736.60 636.29 100.31 736.93 636.72
6 40.10 40.10 0.00 736.55 636.33 100.22 736.89 636.72
7 40.60 40.60 0.00 736.48 635.99 100.49 736.72 636.37
8 42.80 42.80 0.00 736.32 636.47 99.85 736.64 636.81
9 34.80 34.80 0.00 736.34 635.77 100.57 736.55 636.23
10 33.20 33.20 0.00 736.30 635.98 100.32 736.49 636.39
11 33.80 33.80 0.00 736.26 635.93 100.33 736.52 636.34
12 26.60 26.60 0.00 736.37 635.43 100.94 736.46 635.81
13 26.20 26.20 0.00 736.35 635.95 100.40 736.49 636.35
14 26.40 26.40 0.00 736.34 635.78 100.56 736.56 636.16
15 26.10 26.10 0.00 736.42 635.51 100.91 736.56 635.92
16 26.60 26.60 0.00 736.39 636.15 100.24 736.56 636.57
17 33.70 33.70 0.00 736.25 636.03 100.22 736.44 636.56
18 43.40 43.40 0.00 736.17 635.97 100.20 736.44 636.33
19 43.50 43.50 0.00 736.07 636.24 99.83 736.44 636.64
20 44.30 44.30 0.00 735.85 636.24 99.61 736.44 636.67
21 43.70 43.70 0.00 735.76 635.66 100.10 736.44 636.15
22 27.70 27.70 0.00 735.88 635.59 100.29 736.44 635.99
23 26.20 26.20 0.00 735.81 635.65 100.16 736.60 636.36
24 14.30 14.30 0.00 736.00 635.12 100.88 736.60 635.51
AVG 29.87 29.87 0.00 736.26 635.88 100.37 736.56 636.31
MAX 44.30 44.30 0.00 736.61 636.47 100.94 736.93 636.81
MIN 13.80 13.80 0.00 735.76 635.12 99.61 736.33 635.51
BUILDING STRONG®