US Army Corps of Engineers

Lower Monumental Dam

Sunday April 12, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 65.30 12.20 52.50 538.31 438.78 99.53 439.00
2 67.00 12.30 54.10 538.48 438.74 99.74 439.10
3 67.00 12.40 54.00 538.39 438.74 99.65 439.01
4 66.90 12.30 53.90 538.42 438.77 99.65 439.11
5 67.00 12.30 54.10 538.35 438.76 99.59 439.03
6 67.00 12.40 54.10 538.41 438.79 99.62 439.19
7 66.90 12.20 54.10 538.39 438.79 99.60 439.13
8 66.80 12.40 53.90 538.38 438.78 99.60 439.06
9 66.80 12.30 53.90 538.40 438.82 99.58 439.09
10 66.80 12.40 53.80 538.37 438.86 99.51 439.20
11 67.00 12.50 53.90 538.38 438.84 99.54 439.15
12 67.00 12.30 54.00 538.37 438.82 99.55 439.16
13 67.00 12.30 54.10 538.35 438.85 99.50 439.22
14 67.40 12.60 54.10 538.35 438.87 99.48 439.21
15 67.10 12.40 54.10 538.34 438.87 99.47 439.21
16 67.10 12.40 54.10 538.35 438.87 99.48 439.27
17 67.20 12.50 54.10 538.34 438.89 99.45 439.35
18 67.10 12.40 54.10 538.34 438.88 99.46 439.28
19 67.20 12.50 54.10 538.34 438.84 99.50 439.28
20 67.20 12.40 54.30 538.35 438.87 99.48 439.31
21 68.70 12.20 54.40 538.36 439.02 99.34 439.42
22 67.40 12.30 54.50 538.33 438.88 99.45 439.28
23 67.20 12.20 54.30 538.35 438.84 99.51 439.38
24 67.00 12.20 54.20 538.35 438.87 99.48 439.25
AVG 67.05 12.35 54.03 538.37 438.84 99.53 439.20
MAX 68.70 12.60 54.50 538.48 439.02 99.74 439.42
MIN 65.30 12.20 52.50 538.31 438.74 99.34 439.00