US Army Corps of Engineers

Lower Granite Dam

Monday May 4, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 68.40 12.00 56.00 734.96 633.51 101.45 735.69 634.74
2 68.20 12.00 55.80 734.91 633.49 101.42 735.67 634.76
3 68.10 12.00 55.60 734.87 633.38 101.49 735.65 634.76
4 68.10 12.10 55.50 734.85 633.45 101.40 735.63 634.60
5 64.70 12.20 52.10 734.82 633.28 101.54 735.61 634.59
6 64.60 12.20 52.10 734.79 633.37 101.42 735.59 634.61
7 64.50 12.10 52.00 734.77 633.34 101.43 735.57 634.63
8 64.50 12.10 52.00 734.78 633.28 101.50 735.55 634.67
9 64.50 12.10 52.00 734.81 633.31 101.50 735.54 634.62
10 64.40 12.00 51.90 734.84 633.28 101.56 735.53 634.61
11 64.50 12.10 52.00 734.90 633.38 101.52 735.53 634.74
12 64.60 12.00 52.20 734.94 633.33 101.61 735.53 634.61
13 67.50 12.10 53.30 734.95 634.41 100.54 735.54 635.05
14 69.30 12.10 56.80 734.96 633.62 101.34 735.55 634.74
15 69.40 12.10 56.90 734.98 633.21 101.77 735.56 634.58
16 69.30 12.10 56.80 734.98 633.67 101.31 735.57 634.80
17 69.80 12.50 56.90 734.99 633.51 101.48 735.58 634.77
18 71.20 12.30 56.90 734.96 633.62 101.34 735.59 634.77
19 69.50 12.20 56.90 735.00 633.52 101.48 735.60 634.81
20 69.60 12.30 57.00 735.01 633.48 101.53 735.62 634.63
21 69.50 12.20 56.90 735.06 633.56 101.50 735.63 634.70
22 69.70 12.30 57.00 735.12 633.63 101.49 735.67 634.84
23 69.80 12.30 57.10 735.16 633.58 101.58 735.73 634.85
24 69.80 12.10 57.20 735.19 633.61 101.58 735.78 634.83
AVG 67.65 12.15 54.95 734.94 633.49 101.45 735.60 634.72
MAX 71.20 12.50 57.20 735.19 634.41 101.77 735.78 635.05
MIN 64.40 12.00 51.90 734.77 633.21 100.54 735.53 634.58