US Army Corps of Engineers

Lower Granite Dam

Wednesday February 4, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 14.20 14.20 0.00 736.04 636.62 99.42 736.07 637.05
2 13.50 13.50 0.00 736.10 636.86 99.24 736.26 637.23
3 13.50 13.50 0.00 736.26 636.47 99.79 736.43 636.84
4 13.80 13.80 0.00 736.38 637.19 99.19 736.47 637.65
5 27.50 27.50 0.00 736.21 637.50 98.71 736.59 637.95
6 42.90 42.90 0.00 736.09 636.96 99.13 736.57 637.33
7 43.30 43.30 0.00 735.96 637.42 98.54 736.24 637.78
8 43.00 43.00 0.00 735.79 637.49 98.30 736.06 637.88
9 28.20 28.20 0.00 735.83 636.06 99.77 735.99 636.60
10 14.70 14.70 0.00 735.98 636.77 99.21 735.98 637.17
11 14.00 14.00 0.00 736.03 636.64 99.39 736.19 637.04
12 13.90 13.90 0.00 736.25 636.10 100.15 736.38 636.49
13 13.90 13.90 0.00 736.44 636.85 99.59 736.43 637.29
14 13.90 13.90 0.00 736.45 636.77 99.68 736.61 637.13
15 14.40 14.40 0.00 736.52 636.68 99.84 736.82 637.11
16 27.70 27.70 0.00 736.58 637.37 99.21 736.89 637.78
17 27.90 27.90 0.00 736.58 637.12 99.46 736.82 637.54
18 31.90 31.90 0.00 736.48 637.18 99.30 736.80 637.59
19 32.30 32.30 0.00 736.45 637.23 99.22 736.78 637.63
20 32.30 32.30 0.00 736.41 636.83 99.58 736.70 637.18
21 32.10 32.10 0.00 736.36 637.00 99.36 736.65 637.39
22 27.90 27.90 0.00 736.36 636.81 99.55 736.67 637.27
23 27.10 27.10 0.00 736.45 636.43 100.02 736.69 636.91
24 14.40 14.40 0.00 736.63 636.65 99.98 736.66 637.04
AVG 24.10 24.10 0.00 736.28 636.88 99.40 736.49 637.29
MAX 43.30 43.30 0.00 736.63 637.50 100.15 736.89 637.95
MIN 13.50 13.50 0.00 735.79 636.06 98.30 735.98 636.49
BUILDING STRONG®