US Army Corps of Engineers

Lower Monumental Dam

Wednesday January 28, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 15.20 13.50 0.00 538.32 438.96 99.36 438.66
2 13.00 12.80 0.00 538.42 438.71 99.71 438.32
3 14.40 12.70 0.00 538.29 439.09 99.20 438.85
4 13.20 13.00 0.00 538.43 438.85 99.58 438.59
5 18.80 18.60 0.00 538.26 438.77 99.49 438.39
6 31.30 31.10 0.00 538.55 439.27 99.28
7 55.10 54.90 0.00 538.41 439.54 98.87 439.48
8 53.60 53.40 0.00 538.68 439.32 99.36 439.30
9 40.30 40.10 0.00 538.75 439.32 99.43 439.27
10 27.50 27.30 0.00 539.09 439.26 99.83 439.23
11 26.50 26.30 0.00 538.98 439.15 99.83 439.00
12 14.10 13.90 0.00 539.17 438.96 100.21 438.65
13 13.30 13.10 0.00 538.87 439.16 99.71 438.99
14 14.00 13.80 0.00 539.05 438.75 100.30 438.37
15 14.30 12.60 0.00 539.00 438.80 100.20 438.37
16 13.40 13.20 0.00 538.98 439.03 99.95 438.91
17 29.10 27.40 0.00 538.78 439.06 99.72 438.93
18 44.00 43.80 0.00 538.91 439.19 99.72 439.03
19 44.00 43.80 0.00 539.04 439.41 99.63
20
21
22
23
24
AVG 26.06 25.54 0.00 538.74 439.08 99.65 438.85
MAX 55.10 54.90 0.00 539.17 439.54 100.30 439.48
MIN 13.00 12.60 0.00 538.26 438.71 98.87 438.32
BUILDING STRONG®