US Army Corps of Engineers

Lower Granite Dam

Friday January 30, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 15.00 13.30 0.00 736.61 635.29 101.32 736.57 635.51
2 13.30 13.30 0.00 736.70 635.23 101.47 736.66 635.58
3 13.70 13.70 0.00 736.76 635.48 101.28 736.90 635.91
4 27.70 27.70 0.00 736.73 635.69 101.04 737.02 636.13
5 39.80 39.80 0.00 736.61 635.82 100.79 736.92 636.41
6 53.90 53.90 0.00 736.29 636.45 99.84 736.75 636.89
7 55.70 55.70 0.00 736.03 636.41 99.62 736.46 636.88
8 54.20 54.20 0.00 735.82 636.24 99.58 736.14 636.60
9 39.50 39.50 0.00 735.71 636.00 99.71 735.88 636.28
10 26.20 26.20 0.00 735.72 636.00 99.72 735.82 636.40
11 13.80 13.80 0.00 735.90 635.85 100.05 735.89 636.18
12 13.10 13.10 0.00 736.02 635.76 100.26 736.03 636.06
13 13.00 13.00 0.00 736.17 635.84 100.33 736.23 636.18
14 13.50 13.50 0.00 736.29 636.18 100.11 736.36 636.60
15 24.40 24.40 0.00 736.23 636.54 99.69 736.54 636.96
16 39.20 39.20 0.00 736.18 636.23 99.95 736.59 636.66
17 44.40 44.40 0.00 736.11 636.44 99.67 736.43 636.93
18 48.40 48.40 0.00 735.83 636.67 99.16 736.23 637.11
19 43.80 43.80 0.00 735.71 636.28 99.43 736.11 636.67
20 40.70 40.70 0.00 735.69 635.93 99.76 735.94 636.45
21 28.40 28.40 0.00 735.66 635.94 99.72 735.86 636.33
22 26.90 26.90 0.00 735.71 635.80 99.91 735.95 636.31
23 15.10 15.10 0.00 735.95 635.55 100.40 735.99 635.97
24 15.50 13.80 0.00 736.04 635.61 100.43 736.12 636.08
AVG 29.97 29.82 0.00 736.10 635.97 100.13 736.31 636.38
MAX 55.70 55.70 0.00 736.76 636.67 101.47 737.02 637.11
MIN 13.00 13.00 0.00 735.66 635.23 99.16 735.82 635.51