US Army Corps of Engineers

Lower Monumental Dam

Friday March 6, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 30.20 29.90 0.00 539.24 439.43 99.81 439.35
2 30.00 29.70 0.00 539.12 439.48 99.64 439.50
3 30.10 29.80 0.00 539.26 439.37 99.89 439.33
4 30.70 30.40 0.00 539.10 439.43 99.67 439.41
5 40.30 40.00 0.00 539.13 439.60 99.53 439.66
6 54.90 46.30 8.30 539.14 439.55 99.59 440.09
7 54.00 45.00 8.70 539.29 439.50 99.79 440.03
8 40.20 31.00 8.80 539.40 439.45 99.95 439.83
9 40.00 30.80 8.80 539.56 439.47 100.09 439.41
10 31.00 30.70 0.00 539.61 439.49 100.12 439.44
11 31.00 30.70 0.00 539.41 439.68 99.73 439.75
12 30.70 30.40 0.00 539.58 439.46 100.12 439.41
13 31.20 30.90 0.00 539.39 439.44 99.95 439.43
14 30.90 30.60 0.00 539.55 439.42 100.13 439.37
15 30.90 30.60 0.00 539.41 439.33 100.08 439.29
16 31.20 30.90 0.00 539.53 439.36 100.17 439.26
17 32.70 32.40 0.00 539.41 439.36 100.05 439.47
18 45.10 44.80 0.00 539.39 439.57 99.82 439.68
19 54.30 54.00 0.00 539.79 439.71 100.08 439.77
20 57.20 56.90 0.00 539.50 439.87 99.63 440.07
21 57.50 57.20 0.00 539.78 439.95 99.83 440.09
22 55.70 55.40 0.00 539.50 439.94 99.56 440.16
23 54.20 53.90 0.00 539.52 439.93 99.59 440.18
24 44.20 43.90 0.00 539.49 439.60 99.89 439.64
AVG 40.34 38.59 1.44 539.42 439.56 99.86 439.65
MAX 57.50 57.20 8.80 539.79 439.95 100.17 440.18
MIN 30.00 29.70 0.00 539.10 439.33 99.53 439.26
BUILDING STRONG®