US Army Corps of Engineers

Lower Granite Dam

Monday June 1, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 71.00 12.10 58.50 735.29 634.09 101.20 735.96 635.34
2 70.90 12.10 58.40 735.29 634.04 101.25 735.94 635.19
3 68.20 12.10 55.70 735.31 633.79 101.52 735.93 635.08
4 68.20 12.10 55.70 735.32 633.91 101.41 735.94 635.26
5 68.30 12.10 55.70 735.33 634.01 101.32 735.96 635.25
6 70.00 12.10 55.80 735.32 634.69 100.63 735.96 635.55
7 68.30 12.10 55.80 735.22 634.09 101.13 735.97 635.17
8 68.30 12.10 55.80 735.32 633.93 101.39 735.98 635.23
9 70.10 12.10 55.90 735.30 634.29 101.01 735.97 635.18
10 68.30 12.10 55.80 735.32 634.06 101.26 736.01 635.21
11 68.10 12.10 55.60 735.36 633.84 101.52 736.02 635.29
12 69.20 12.00 56.70 735.35 633.96 101.39 736.03 635.28
13 70.20 12.20 57.60 735.35 633.94 101.41 736.04 635.24
14 70.20 12.10 57.70 735.34 633.91 101.43 736.02 635.15
15 69.50 12.10 56.90 735.37 633.64 101.73 736.01 634.95
16 61.50 12.20 48.90 735.41 633.62 101.79 735.98 634.88
17 61.40 12.10 48.90 735.42 633.67 101.75 736.01 634.92
18 63.20 12.20 48.90 735.42 633.74 101.68 736.08 634.89
19 63.20 12.10 49.00 735.46 634.09 101.37 736.05 635.25
20 61.50 12.10 49.00 735.45 633.66 101.79 736.11 634.91
21 61.50 12.10 49.00 735.54 633.73 101.81 736.17 634.97
22 61.50 12.00 49.00 735.55 633.57 101.98 736.13 634.98
23 61.50 12.00 49.00 735.54 633.58 101.96 736.14 634.72
24 61.40 12.10 48.90 735.53 633.57 101.96 736.17 634.90
AVG 66.48 12.10 53.68 735.38 633.89 101.49 736.02 635.12
MAX 71.00 12.20 58.50 735.55 634.69 101.98 736.17 635.55
MIN 61.40 12.00 48.90 735.22 633.57 100.63 735.93 634.72
BUILDING STRONG®