US Army Corps of Engineers

Lower Granite Dam

Monday October 20, 2025

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadLWSI Gage ElevationLWGW NavLock Elevation
1 12.80 12.40 0.00 736.57 636.80 99.77 736.78 637.15
2 12.90 12.50 0.00 736.60 636.89 99.71 736.79 637.23
3 12.80 12.40 0.00 736.62 636.63 99.99 736.85 636.71
4 13.20 12.80 0.00 736.66 636.90 99.76 736.86 637.24
5 13.90 13.10 0.40 736.69 637.04 99.65 736.88 637.64
6 22.80 12.90 9.50 736.58 636.05 100.53 736.90 637.28
7 22.70 12.90 9.50 736.57 636.06 100.51 736.80 637.24
8 22.70 12.80 9.40 736.52 636.47 100.05 736.62 637.72
9 22.40 12.80 9.20 736.40 636.24 100.16 736.63 637.15
10 13.30 12.90 0.00 736.47 636.69 99.78 736.56 637.07
11 13.40 13.00 0.00 736.46 637.26 99.20 736.60 637.52
12 13.40 13.00 0.00 736.46 636.81 99.65 736.69 637.09
13 13.40 13.00 0.00 736.56 636.74 99.82 736.68 637.16
14 13.40 13.00 0.00 736.56 637.17 99.39 736.68 637.54
15 13.40 13.00 0.00 736.56 636.83 99.73 736.76 637.19
16 13.40 13.00 0.00 736.60 636.99 99.61 736.77 637.40
17 13.60 13.20 0.00 736.66 637.22 99.44 736.76 637.57
18 19.40 17.30 0.00 736.56 636.84 99.72 736.83 637.32
19 17.70 17.30 0.00 736.59 636.97 99.62 736.79 637.36
20 17.80 17.40 0.00 736.60 637.15 99.45 736.72 637.53
21 17.90 17.50 0.00 736.54 636.82 99.72 736.75 637.18
22 17.80 17.40 0.00 736.54 636.86 99.68 736.74 637.23
23 17.70 17.30 0.00 736.57 637.13 99.44 736.67 637.41
24 13.50 13.10 0.00 736.60 636.65 99.95 736.68 637.01
AVG 16.05 14.00 1.58 736.56 636.80 99.76 736.74 637.29
MAX 22.80 17.50 9.50 736.69 637.26 100.53 736.90 637.72
MIN 12.80 12.40 0.00 736.40 636.05 99.20 736.56 636.71
BUILDING STRONG®