US Army Corps of Engineers

Lower Granite Dam

Sunday April 12, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 70.30 12.10 57.70 735.31 634.30 101.01 735.82 635.45
2 70.30 12.20 57.80 735.31 633.93 101.38 735.77 635.34
3 70.30 12.20 57.70 735.25 634.09 101.16 735.73 635.39
4 70.20 12.20 57.60 735.21 634.03 101.18 735.72 635.31
5 70.20 12.20 57.60 735.21 633.98 101.23 735.68 635.24
6 70.20 12.30 57.60 735.16 633.99 101.17 735.64 635.33
7 70.50 12.10 58.00 735.14 634.05 101.09 735.63 635.33
8 70.90 12.20 58.30 735.13 634.01 101.12 735.61 635.19
9 70.90 12.20 58.30 735.10 634.11 100.99 735.58 635.16
10 70.90 12.30 58.30 735.07 634.09 100.98 735.57 635.27
11 70.90 12.30 58.20 735.07 634.04 101.03 735.57 635.25
12 70.80 12.20 58.20 735.07 634.08 100.99 735.57 635.32
13 70.70 12.20 58.10 735.08 633.94 101.14 735.57 635.27
14 70.80 12.30 58.10 735.09 634.00 101.09 735.57 635.34
15 70.80 12.20 58.10 735.09 634.13 100.96 735.57 635.19
16 70.80 12.30 58.10 735.10 634.17 100.93 735.58 635.31
17 70.90 12.30 58.10 735.10 633.98 101.12 735.61 635.46
18 70.90 12.20 58.20 735.12 633.97 101.15 735.62 635.29
19 71.00 12.30 58.20 735.11 634.17 100.94 735.63 635.35
20 70.90 12.20 58.30 735.14 634.07 101.07 735.65 635.14
21 70.70 12.10 58.20 735.18 633.95 101.23 735.67 635.34
22 70.80 12.20 58.30 735.21 634.06 101.15 735.69 635.26
23 70.80 12.10 58.30 735.23 634.10 101.13 735.71 635.25
24 71.20 12.10 58.70 735.21 634.17 101.04 735.73 635.67
AVG 70.70 12.21 58.08 735.15 634.06 101.10 735.65 635.31
MAX 71.20 12.30 58.70 735.31 634.30 101.38 735.82 635.67
MIN 70.20 12.10 57.60 735.07 633.93 100.93 735.57 635.14
BUILDING STRONG®