US Army Corps of Engineers

Lower Granite Dam

Saturday October 18, 2025

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 12.90 12.50 0.00 736.79 636.93 99.86 736.99 637.23
2 12.90 12.50 0.00 736.85 636.65 100.20 737.01 637.03
3 12.90 12.50 0.00 736.88 636.41 100.47 737.03 636.74
4 12.80 12.40 0.00 736.91 636.71 100.20 737.07 637.04
5 13.80 12.50 0.90 736.92 636.58 100.34 737.08 637.35
6 22.90 12.60 9.80 736.83 635.97 100.86 737.11 637.35
7 27.10 17.00 9.70 736.78 636.08 100.70 736.97 637.23
8 27.10 17.00 9.70 736.68 636.22 100.46 736.81 637.33
9 26.70 17.10 9.30 736.57 636.41 100.16 736.74 637.11
10 17.50 17.10 0.00 736.58 636.54 100.04 736.64 636.85
11 13.10 12.70 0.00 736.58 636.72 99.86 736.66 636.99
12 13.00 12.60 0.00 736.56 636.56 100.00 736.78 636.87
13 12.90 12.50 0.00 736.65 636.47 100.18 736.74 636.86
14 12.80 12.40 0.00 736.70 636.73 99.97 736.74 637.14
15 12.90 12.50 0.00 736.65 636.62 100.03 736.84 637.06
16 13.10 12.70 0.00 736.71 636.61 100.10 736.83 637.10
17 19.40 17.30 0.00 736.68 637.02 99.66 736.83 637.19
18 17.90 17.50 0.00 736.62 636.70 99.92 736.84 637.02
19 17.90 17.50 0.00 736.64 636.74 99.90 736.81 637.20
20 17.90 17.50 0.00 736.61 636.77 99.84 736.79 637.15
21 17.80 17.40 0.00 736.61 636.53 100.08 736.79 636.80
22 13.60 13.20 0.00 736.66 636.77 99.89 736.75 637.16
23 13.50 13.10 0.00 736.65 636.79 99.86 736.79 637.14
24 13.50 13.10 0.00 736.61 636.42 100.19 736.86 636.77
AVG 16.50 14.38 1.64 736.70 636.58 100.12 736.85 637.07
MAX 27.10 17.50 9.80 736.92 637.02 100.86 737.11 637.35
MIN 12.80 12.40 0.00 736.56 635.97 99.66 736.64 636.74
BUILDING STRONG®