US Army Corps of Engineers

Lower Monumental Dam

Tuesday December 9, 2025

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 18.50 17.90 0.00 539.20 439.17 100.03 438.97
2 18.40 17.80 0.00 538.75 439.13 99.62 438.95
3 18.40 17.80 0.00 539.23 438.97 100.26 438.74
4 18.40 17.80 0.00 538.94 439.21 99.73 439.08
5 19.30 18.70 0.00 539.13 439.41 99.72 439.59
6 30.60 30.00 0.00 538.72 439.48 99.24 439.70
7 40.70 40.10 0.00 539.08 439.50 99.58 439.51
8 40.00 39.40 0.00 539.03 439.61 99.42 439.65
9 40.40 39.80 0.00 539.14 439.58 99.56 439.63
10 40.50 39.90 0.00 539.04 439.45 99.59 439.43
11 40.30 39.70 0.00 539.08 439.50 99.58 439.49
12 40.20 39.60 0.00 539.15 439.45 99.70 439.39
13 42.00 39.90 0.00 539.09 439.46 99.63 439.62
14 40.40 39.80 0.00 539.18 439.48 99.70 439.52
15 40.30 39.70 0.00 539.13 439.39 99.74 439.38
16 40.80 40.20 0.00 539.19 439.44 99.75
17
18
19
20
21
22
23
24
AVG 33.08 32.38 0.00 539.07 439.39 99.68 439.38
MAX 42.00 40.20 0.00 539.23 439.61 100.26 439.70
MIN 18.40 17.80 0.00 538.72 438.97 99.24 438.74
BUILDING STRONG®