US Army Corps of Engineers

Lower Monumental Dam

Thursday December 4, 2025

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 13.10 12.50 0.00 539.15 439.16 99.99 438.98
2 13.00 12.40 0.00 538.96 438.90 100.06 438.59
3 13.10 12.50 0.00 539.14 439.32 99.82 439.32
4 13.10 12.50 0.00 538.99 439.00 99.99 438.76
5 13.70 13.10 0.00 539.03 439.16 99.87 439.01
6 26.90 26.30 0.00 538.88 439.39 99.49 439.37
7 27.50 26.90 0.00 539.16 439.06 100.10 438.89
8 34.20 33.60 0.00 538.88 439.56 99.32 439.68
9 34.00 33.40 0.00 539.28 439.29 99.99 439.21
10 33.60 33.00 0.00 538.93 439.43 99.50 439.40
11 33.60 33.00 0.00 539.23 439.70 99.53 439.77
12 29.10 27.00 0.00 539.01 439.10 99.91 438.95
13 13.70 13.10 0.00 539.17 439.29 99.88 439.27
14 14.40 12.30 0.00 538.87 438.95 99.92 438.69
15 13.50 12.90 0.00 539.05 439.01 100.04 438.74
16 27.90 27.30 0.00 538.81 439.30 99.51 439.18
17 27.70 27.10 0.00 539.14 439.11 100.03 438.91
18 33.50 32.90 0.00 538.97 439.43 99.54 439.42
19 33.60 33.00 0.00 539.18 439.09 100.09 438.91
20 34.30 33.70 0.00 538.87 439.06 99.81 438.83
21 27.10 26.50 0.00 539.07 439.03 100.04 438.84
22 26.40 25.80 0.00 538.95 439.01 99.94 438.83
23 26.20 25.60 0.00 539.03 438.88 100.15 438.62
24 13.60 13.00 0.00 539.22 438.81 100.41 438.45
AVG 24.03 23.31 0.00 539.04 439.17 99.87 439.03
MAX 34.30 33.70 0.00 539.28 439.70 100.41 439.77
MIN 13.00 12.30 0.00 538.81 438.81 99.32 438.45
BUILDING STRONG®