US Army Corps of Engineers

Lower Monumental Dam

Tuesday May 19, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 66.60 12.20 52.30 537.85 438.68 99.17 439.07
2 64.80 12.20 52.00 537.87 438.83 99.04 439.13
3 64.90 12.20 52.10 537.80 438.79 99.01 439.23
4 64.70 12.10 52.00 537.77 438.98 98.79 439.44
5 66.30 12.30 52.00 537.61 438.81 98.80 439.21
6 64.80 12.20 52.00 537.91 438.77 99.14 439.25
7 64.70 12.20 51.90 537.97 438.77 99.20 439.04
8 62.00 12.20 49.20 538.11 438.71 99.40 439.09
9 61.80 12.20 49.00 537.99 438.68 99.31 438.96
10 61.80 12.20 49.00 538.10 438.71 99.39 439.09
11 62.00 12.20 49.20 538.07 438.68 99.39 439.06
12 61.90 12.30 49.00 538.07 438.55 99.52 438.79
13 61.70 12.20 48.90 538.35 438.63 99.72 438.94
14 63.20 12.20 48.90 538.20 438.55 99.65 438.75
15 61.90 12.30 49.00 538.21 438.58 99.63 439.07
16 62.00 12.30 49.10 538.26 438.64 99.62 438.95
17 61.90 12.20 49.00 538.32 438.55 99.77 438.71
18 61.80 12.20 49.00 538.32 438.57 99.75 438.83
19 61.80 12.20 49.00 538.36 438.55 99.81 438.87
20 61.90 12.20 49.10 538.44 438.53 99.91
21
22
23
24
AVG 63.12 12.21 50.08 538.08 438.68 99.40 439.03
MAX 66.60 12.30 52.30 538.44 438.98 99.91 439.44
MIN 61.70 12.10 48.90 537.61 438.53 98.79 438.71