US Army Corps of Engineers

Lower Monumental Dam

Thursday January 22, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 28.80 27.20 0.00 538.61 438.74 99.87 438.35
2 27.30 27.20 0.00 538.36 438.63 99.73 438.12
3 27.30 27.20 0.00 538.59 438.77 99.82 438.35
4 27.30 27.20 0.00 538.44 438.63 99.81 438.16
5 27.50 27.40 0.00 538.54 438.67 99.87 438.23
6 28.20 28.10 0.00 538.40 438.88 99.52
7 43.20 43.10 0.00 538.37 438.82 99.55 438.36
8 43.00 42.90 0.00 538.70 438.89 99.81 438.53
9 45.00 43.40 0.00 538.44 438.96 99.48 438.61
10 43.20 43.10 0.00 538.72 438.86 99.86 438.46
11 42.80 42.70 0.00 538.52 438.74 99.78 438.37
12 27.20 27.10 0.00 538.57 438.51 100.06 437.95
13 26.90 26.80 0.00 538.44 438.50 99.94 437.98
14 26.90 26.80 0.00 538.53 438.39 100.14 437.75
15 26.90 26.80 0.00 538.57 438.47 100.10 437.94
16 28.20 28.10 0.00 538.42 438.63 99.79 438.25
17 42.90 42.80 0.00 538.46 438.83 99.63 438.45
18 44.90 43.30 0.00 538.73 438.71 100.02 438.24
19 43.50 43.30 0.00 538.60 438.96 99.64 438.66
20 43.50 43.30 0.00 538.78 438.89 99.89 438.51
21 43.20 43.00 0.00 538.66 438.82 99.84 438.40
22 42.40 42.20 0.00 538.81 438.76 100.05 438.42
23 28.20 28.00 0.00 538.52 438.44 100.08 437.87
24 27.40 27.20 0.00 538.72 438.71 100.01 438.28
AVG 34.82 34.51 0.00 538.56 438.72 99.85 438.27
MAX 45.00 43.40 0.00 538.81 438.96 100.14 438.66
MIN 26.90 26.80 0.00 538.36 438.39 99.48 437.75
BUILDING STRONG®