US Army Corps of Engineers

Lower Granite Dam

Sunday October 19, 2025

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 13.50 13.10 0.00 736.71 636.80 99.91 736.86 637.11
2 13.50 13.10 0.00 736.74 636.81 99.93 736.84 637.20
3 13.40 13.00 0.00 736.72 636.48 100.24 736.92 636.84
4 13.50 13.10 0.00 736.78 636.74 100.04 736.91 637.09
5 14.20 13.10 0.70 736.80 636.76 100.04 736.89 637.40
6 24.90 13.10 9.60 736.68 635.93 100.75 737.00 637.00
7 23.00 13.00 9.60 736.64 635.80 100.84 736.86 637.06
8 23.00 13.00 9.60 736.61 636.34 100.27 736.63 637.58
9 27.00 17.20 9.30 736.39 636.59 99.80 736.72 637.26
10 18.00 17.50 0.00 736.40 636.37 100.03 736.66 636.79
11 17.70 17.30 0.00 736.45 637.32 99.13 736.55 637.66
12 13.80 13.40 0.00 736.41 636.88 99.53 736.59 637.05
13 13.50 13.10 0.00 736.42 636.82 99.60 736.73 637.19
14 13.50 13.10 0.00 736.46 637.18 99.28 736.71 637.47
15 13.50 13.10 0.00 736.51 636.94 99.57 736.70 637.27
16 13.60 13.20 0.00 736.47 636.94 99.53 736.79 637.26
17 13.70 13.30 0.00 736.56 637.19 99.37 736.78 637.54
18 17.70 17.30 0.00 736.51 636.95 99.56 736.75 637.28
19 17.90 17.50 0.00 736.50 636.83 99.67 736.73 637.22
20 17.80 17.40 0.00 736.47 637.13 99.34 736.71 637.44
21 19.50 17.40 0.00 736.45 637.00 99.45 736.71 637.60
22 13.60 13.20 0.00 736.49 636.76 99.73 736.69 637.06
23 13.30 12.90 0.00 736.53 636.98 99.55 736.71 637.29
24 13.50 13.10 0.00 736.53 637.15 99.38 736.73 637.25
AVG 16.53 14.35 1.62 736.55 636.78 99.77 736.76 637.25
MAX 27.00 17.50 9.60 736.80 637.32 100.84 737.00 637.66
MIN 13.30 12.90 0.00 736.39 635.80 99.13 736.55 636.79
BUILDING STRONG®