US Army Corps of Engineers

Lower Granite Dam

Tuesday May 5, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 69.80 12.20 57.20 735.22 633.61 101.61 735.80 634.78
2 69.80 12.20 57.20 735.22 633.71 101.51 735.83 634.89
3 69.90 12.30 57.20 735.23 633.70 101.53 735.85 634.83
4 75.30 12.10 62.80 735.13 633.86 101.27 735.86 635.22
5 77.60 12.30 65.00 735.10 633.85 101.25 735.85 635.21
6 77.60 12.30 64.90 735.06 633.67 101.39 735.78 635.08
7 77.60 12.40 64.80 734.95 633.82 101.13 735.75 635.27
8 77.40 12.30 64.80 734.94 633.85 101.09 735.74 635.17
9 77.30 12.30 64.70 734.97 633.83 101.14 735.73 635.25
10 77.50 12.30 64.90 734.88 633.72 101.16 735.72 635.37
11 77.90 12.30 65.20 734.91 633.98 100.93 735.71 635.31
12 77.20 12.30 64.50 734.93 633.92 101.01 735.70 635.25
13 74.60 12.20 61.90 734.92 634.05 100.87 735.69 635.31
14 74.60 12.30 61.90 734.91 633.98 100.93 735.68 635.25
15 74.50 12.30 61.80 734.93 634.01 100.92 735.68 635.14
16 76.20 12.30 61.90 734.92 633.83 101.09 735.69 635.11
17 74.50 12.20 61.90 734.96 633.98 100.98 735.69 635.11
18 77.20 13.50 61.60 734.95 634.14 100.81 735.70 635.38
19 78.60 16.60 61.60 735.00 633.64 101.36 735.71 635.04
20 74.20 12.10 61.70 735.04 633.68 101.36 735.71 634.87
21 74.20 12.00 61.80 735.05 633.80 101.25 735.72 635.01
22 74.40 12.00 62.00 735.10 633.64 101.46 735.80 635.03
23 77.10 12.00 64.70 735.13 633.74 101.39 735.82 634.94
24 77.30 12.10 64.80 735.14 633.64 101.50 735.84 635.11
AVG 75.51 12.45 62.53 735.02 633.82 101.21 735.75 635.12
MAX 78.60 16.60 65.20 735.23 634.14 101.61 735.86 635.38
MIN 69.80 12.00 57.20 734.88 633.61 100.81 735.68 634.78