US Army Corps of Engineers

Lower Monumental Dam

Sunday March 8, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 31.80 31.50 0.00 539.51 439.42 100.09 439.35
2 30.20 29.90 0.00 539.24 439.42 99.82 439.41
3 30.10 29.80 0.00 539.44 439.29 100.15 439.14
4 30.40 30.10 0.00 539.23 439.35 99.88 439.22
5 43.10 34.40 8.40 539.27 439.25 100.02 439.34
6 43.80 34.60 8.80 539.33 439.07 100.26 439.12
7 43.60 34.60 8.60 539.18 439.31 99.87 439.48
8 43.90 34.90 8.70 539.29 439.18 100.11 438.98
9 42.90 42.50 0.10 539.10 439.29 99.81 439.13
10 42.70 42.40 0.00 539.25 439.45 99.80 439.47
11 42.50 42.20 0.00 539.05 439.46 99.59 439.45
12 42.50 42.20 0.00 539.18 439.39 99.79 439.41
13 42.60 42.30 0.00 539.12 439.53 99.59 439.60
14 42.70 42.40 0.00 539.10 439.47 99.63 439.44
15 42.50 42.20 0.00 539.20 439.61 99.59 439.72
16 42.90 42.60 0.00 539.14 439.46 99.68 439.43
17 42.90 42.60 0.00 539.20 439.40 99.80 439.37
18 43.00 42.70 0.00 539.18 439.35 99.83 439.30
19 43.20 42.90 0.00 539.23 439.35 99.88 439.33
20 43.10 42.80 0.00 539.18 439.42 99.76 439.38
21 43.20 42.90 0.00 539.18 439.33 99.85 439.32
22 43.10 42.80 0.00 539.17 439.38 99.79 439.34
23 42.40 42.10 0.00 538.79 439.25 99.54 439.13
AVG 40.83 39.02 1.50 539.20 439.37 99.83 439.34
MAX 43.90 42.90 8.80 539.51 439.61 100.26 439.72
MIN 30.10 29.80 0.00 538.79 439.07 99.54 438.98
BUILDING STRONG®