US Army Corps of Engineers

Lower Granite Dam

Sunday February 1, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 13.60 13.60 0.00 736.17 635.63 100.54 736.56 636.02
2 13.70 13.70 0.00 736.26 635.85 100.41 736.56 636.16
3 13.70 13.70 0.00 736.44 635.22 101.22 736.56 635.63
4 13.60 13.60 0.00 736.62 635.80 100.82 736.78 636.24
5 14.20 14.20 0.00 736.68 636.01 100.67 736.78 636.51
6 26.70 26.70 0.00 736.62 635.90 100.72 736.78 636.29
7 27.30 27.30 0.00 736.67 635.90 100.77 736.78 636.29
8 27.20 27.20 0.00 736.62 635.93 100.69 736.78 636.35
9 27.30 27.30 0.00 736.59 635.85 100.74 736.78 636.26
10 27.40 27.40 0.00 736.69 635.70 100.99 736.78 636.14
11 27.40 27.40 0.00 736.70 635.80 100.90 736.78 636.22
12 27.30 27.30 0.00 736.65 635.66 100.99 736.78 636.07
13 27.20 27.20 0.00 736.74 635.66 101.08 736.78 636.10
14 27.30 27.30 0.00 736.81 635.94 100.87 736.78 636.35
15 27.40 27.40 0.00 736.75 635.90 100.85 736.85 636.35
16 27.90 27.90 0.00 736.71 636.15 100.56 736.87 636.60
17 42.80 42.80 0.00 736.57 636.43 100.14 736.80 636.90
18 40.60 40.60 0.00 736.53 636.07 100.46 736.75 636.44
19 40.40 40.40 0.00 736.36 636.57 99.79 736.75 636.97
20 40.70 40.70 0.00 736.24 636.23 100.01 736.75 636.70
21 27.80 27.80 0.00 736.31 635.62 100.69 736.75 636.06
22 27.30 27.30 0.00 736.25 636.50 99.75 736.75 636.94
23 27.20 27.20 0.00 736.27 635.97 100.30 736.35 636.36
24 26.90 26.90 0.00 736.45 635.70 100.75 736.35 636.20
AVG 26.79 26.79 0.00 736.53 635.92 100.61 736.72 636.34
MAX 42.80 42.80 0.00 736.81 636.57 101.22 736.87 636.97
MIN 13.60 13.60 0.00 736.17 635.22 99.75 736.35 635.63
BUILDING STRONG®