US Army Corps of Engineers

Lower Granite Dam

Tuesday January 27, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 13.00 13.00 0.00 736.28 633.40 102.88 736.30 633.60
2 13.00 13.00 0.00 736.39 633.99 102.40 736.30 634.34
3 13.10 13.10 0.00 736.48 633.70 102.78 736.30 633.99
4 13.40 13.40 0.00 736.61 633.67 102.94 736.30 634.12
5 26.80 26.80 0.00 736.60 634.36 102.24 736.30 634.78
6 40.80 40.80 0.00 736.46 634.37 102.09 736.70 634.76
7 55.30 55.30 0.00 736.29 634.44 101.85 736.70 634.92
8 56.10 56.10 0.00 736.05 634.56 101.49 736.30 635.04
9 53.60 53.60 0.00 735.81 634.41 101.40 736.30 634.81
10 53.20 53.20 0.00 735.58 634.58 101.00 736.30 634.94
11 53.50 53.50 0.00 735.42 634.74 100.68 736.30 634.94
12 40.80 40.80 0.00 735.38 634.22 101.16 735.56 634.49
13 28.00 28.00 0.00 735.35 634.36 100.99 735.53 634.75
14 20.40 20.40 0.00 735.43 634.36 101.07 735.51 634.55
15 13.60 13.60 0.00 735.56 634.22 101.34 735.52 634.53
16 14.00 14.00 0.00 735.61 634.70 100.91 735.62 635.22
17 27.50 27.50 0.00 735.59 634.80 100.79 735.85 635.36
18 39.80 39.80 0.00 735.57 634.65 100.92 735.84 634.97
19 40.20 40.20 0.00 735.49 634.77 100.72 735.68 635.22
20 39.80 39.80 0.00 735.37 634.88 100.49 735.64 635.32
21 27.40 27.40 0.00 735.49 633.99 101.50 735.61 634.18
22 14.40 14.40 0.00 735.65 634.18 101.47 735.62 634.52
23 13.50 13.50 0.00 735.74 634.43 101.31 735.82 634.58
24 13.30 13.30 0.00 736.03 633.99 102.04 736.14 634.22
AVG 30.19 30.19 0.00 735.84 634.32 101.52 736.00 634.67
MAX 56.10 56.10 0.00 736.61 634.88 102.94 736.70 635.36
MIN 13.00 13.00 0.00 735.35 633.40 100.49 735.51 633.60
BUILDING STRONG®