US Army Corps of Engineers

Lower Monumental Dam

Thursday December 18, 2025

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 17.50 16.90 0.00 538.52 438.44 100.08 437.84
2 17.40 16.80 0.00 538.52 438.38 100.14 437.73
3 18.20 16.10 0.00 538.65 438.31 100.34 437.69
4 17.20 16.60 0.00 538.38 438.63 99.75 438.25
5 27.20 26.60 0.00 538.46 438.71 99.75 438.54
6 39.90 39.30 0.00 538.33 438.73 99.60 438.54
7 59.70 59.10 0.00 538.52 439.45 99.07 439.22
8 59.30 58.70 0.00 538.65 439.39 99.26 439.22
9 61.10 59.00 0.00 538.52 439.50 99.02 439.50
10 59.30 58.70 0.00 538.77 439.35 99.42 439.14
11 42.00 41.40 0.00 538.79 439.13 99.66 438.94
12 41.40 40.80 0.00 538.65 439.23 99.42 439.09
13 41.30 40.70 0.00 538.85 439.14 99.71 438.89
14 51.00 50.40 0.00 538.66 439.43 99.23 439.37
15 52.20 51.60 0.00 538.66 439.42 99.24 439.32
16 60.00 59.40 0.00 538.39 439.56 98.83 439.53
17 59.80 59.20 0.00 538.83 439.63 99.20 439.62
18 61.40 60.80 0.00 538.55 439.64 98.91 439.64
19 62.60 62.00 0.00 538.82 439.70 99.12 439.69
20 60.40 59.80 0.00 538.70 439.72 98.98 439.71
21 62.90 62.30 0.00 538.77 439.92 98.85 440.05
22 61.70 61.10 0.00 538.83 439.63 99.20 439.53
23 45.60 45.00 0.00 539.00 439.31 99.69 439.17
24 32.50 30.40 0.00 538.72 439.11 99.61 438.93
AVG 46.32 45.53 0.00 538.65 439.23 99.42 439.05
MAX 62.90 62.30 0.00 539.00 439.92 100.34 440.05
MIN 17.20 16.10 0.00 538.33 438.31 98.83 437.69
BUILDING STRONG®