US Army Corps of Engineers

Lower Monumental Dam

Sunday August 31, 2025

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 21.00 12.20 8.20 538.78 438.80 99.98 439.28
2 22.70 12.30 8.30 538.76 438.65 100.11 439.08
3 21.10 12.20 8.20 538.73 438.71 100.02 439.26
4 21.10 12.20 8.30 538.89 438.74 100.15 439.33
5 21.20 12.30 8.30 538.67 438.66 100.01 439.06
6 21.20 12.30 8.20 538.85 438.77 100.08 439.35
7 21.10 12.20 8.30 538.75 438.74 100.01 439.28
8 21.10 12.30 8.20 538.81 438.74 100.07 439.25
9 21.50 12.60 8.30 538.76 438.74 100.02 439.23
10 21.40 12.60 8.20 538.77 438.72 100.05 439.21
11 21.40 12.50 8.30 538.80 438.73 100.07 439.24
12 21.50 12.60 8.20 538.74 438.78 99.96 439.37
13 21.40 12.60 8.30 538.80 438.76 100.04 439.20
14 21.30 12.50 8.20 538.73 438.77 99.96 439.37
15 21.30 12.50 8.30 538.80 438.77 100.03 439.33
16 22.80 12.50 8.20 538.74 438.64 100.10 439.12
17 21.90 13.10 8.20 538.75 438.94 99.81 439.51
18 35.10 26.20 8.30 538.87 439.21 99.66 439.61
19 34.50 25.60 8.30 538.84 439.08 99.76 439.39
20 34.40 25.50 8.30 538.83 439.39 99.44 440.02
21 34.30 25.40 8.30 538.81 439.16 99.65 439.47
22 21.80 13.10 8.20 538.69 438.55 100.14 438.93
23 21.30 12.50 8.20 538.73 438.91 99.82 439.46
24 21.30 12.50 8.20 538.64 438.67 99.97 439.02
AVG 23.65 14.68 8.25 538.77 438.82 99.95 439.31
MAX 35.10 26.20 8.30 538.89 439.39 100.15 440.02
MIN 21.00 12.20 8.20 538.64 438.55 99.44 438.93
BUILDING STRONG®