US Army Corps of Engineers

Lower Granite Dam

Saturday April 11, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 63.40 12.00 51.00 735.07 633.72 101.35 735.54 635.15
2 63.50 12.00 51.10 735.06 633.71 101.35 735.53 635.14
3 63.50 12.00 51.10 735.08 633.84 101.24 735.52 635.15
4 63.60 12.00 51.20 735.08 633.77 101.31 735.52 635.11
5 63.60 12.00 51.30 735.08 633.74 101.34 735.51 635.17
6 63.70 12.00 51.30 735.08 633.82 101.26 735.51 635.12
7 63.70 12.00 51.30 735.10 633.80 101.30 735.50 635.14
8 63.70 12.00 51.30 735.11 633.86 101.25 735.51 635.13
9 63.90 12.20 51.40 735.12 633.83 101.29 735.51 635.10
10 63.70 11.90 51.40 735.15 633.77 101.38 735.52 635.16
11 63.90 12.00 51.40 735.17 633.87 101.30 735.54 635.12
12 63.80 12.00 51.40 735.19 633.81 101.38 735.58 635.15
13 63.80 12.00 51.40 735.22 633.79 101.43 735.62 635.22
14 63.80 12.00 51.40 735.22 633.94 101.28 735.66 635.23
15 63.80 12.00 51.30 735.22 634.00 101.22 735.69 635.19
16 63.80 12.00 51.30 735.22 633.96 101.26 735.72 635.29
17 63.70 12.00 51.30 735.26 633.83 101.43 735.70 635.18
18 63.80 12.10 51.30 735.28 633.85 101.43 735.69 635.25
19 64.10 12.40 51.30 735.31 633.90 101.41 735.69 635.21
20 64.00 12.20 51.40 735.28 633.72 101.56 735.71 635.19
21 63.90 12.10 51.40 735.31 633.78 101.53 735.73 635.17
22 64.00 12.10 51.40 735.33 633.88 101.45 735.75 635.21
23 64.00 12.10 51.50 735.36 633.76 101.60 735.76 635.18
24 64.30 12.10 51.90 735.34 633.95 101.39 735.79 635.38
AVG 63.79 12.05 51.34 735.19 633.83 101.36 735.62 635.18
MAX 64.30 12.40 51.90 735.36 634.00 101.60 735.79 635.38
MIN 63.40 11.90 51.00 735.06 633.71 101.22 735.50 635.10