US Army Corps of Engineers

Lower Monumental Dam

Monday March 9, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 27.80 27.50 0.00 538.98 439.07 99.91 438.87
2 27.00 26.70 0.00 538.74 439.10 99.64 438.90
3 26.80 26.50 0.00 539.03 438.79 100.24 438.41
4 27.20 26.90 0.00 538.78 438.99 99.79 438.79
5 41.50 41.20 0.00 538.79 439.25 99.54 439.12
6 52.20 51.90 0.00 538.86 439.28 99.58 439.08
7 53.30 53.00 0.00 538.62 439.55 99.07 439.52
8 52.40 52.10 0.00 538.65 439.49 99.16 439.43
9 52.80 52.50 0.00 538.29 439.65 98.64 439.71
10 51.40 51.10 0.00 538.41 439.70 98.71 439.80
11 41.50 41.20 0.00 538.32 439.54 98.78 439.60
12 27.70 27.40 0.00 538.52 439.38 99.14 439.38
13 27.50 27.20 0.00 538.63 439.35 99.28 439.31
14 28.10 27.80 0.00 538.87 439.20 99.67 438.98
15 28.00 27.70 0.00 539.09 439.21 99.88 439.12
16 27.90 27.60 0.00 539.17 439.25 99.92 439.18
17 42.00 41.70 0.00 539.13 439.45 99.68 439.33
18 52.60 52.30 0.00 539.20 439.63 99.57 439.68
19 54.40 54.10 0.00 538.98 439.71 99.27 439.78
20 54.60 54.30 0.00 538.89 439.78 99.11 439.95
21 54.20 53.90 0.00 538.75 439.79 98.96 439.91
22 53.10 52.80 0.00 538.58 439.91 98.67 440.09
23 52.80 52.50 0.00 538.50 439.84 98.66 439.95
24 41.30 41.00 0.00 538.54 439.34 99.20 439.22
AVG 41.59 41.29 0.00 538.76 439.43 99.34 439.38
MAX 54.60 54.30 0.00 539.20 439.91 100.24 440.09
MIN 26.80 26.50 0.00 538.29 438.79 98.64 438.41
BUILDING STRONG®