US Army Corps of Engineers

Lower Monumental Dam

Wednesday December 17, 2025

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 17.00 16.40 0.00 538.81 438.90 99.91 438.55
2 18.80 16.70 0.00 538.55 439.27 99.28 438.90
3 17.40 16.80 0.00 538.90 439.11 99.79 438.84
4 14.50 13.90 0.00 538.59 439.22 99.37 439.22
5 24.20 10.60 13.00 538.55 439.13 99.42 439.37
6 18.40 1.10 16.70 539.00 438.68 100.32 438.45
7 19.60 19.00 0.00 538.59 439.60 98.99 440.16
8 34.90 34.30 0.00 538.87 439.32 99.55 439.27
9 36.70 34.60 0.00 538.50 438.99 99.51 438.91
10 35.60 35.00 0.00 538.41 439.82 98.59 440.07
11 35.50 34.90 0.00 538.56 439.03 99.53 438.79
12 27.70 27.10 0.00 538.32 439.16 99.16 439.04
13 27.40 26.80 0.00 538.52 439.09 99.43 438.89
14 27.40 26.80 0.00 538.47 438.68 99.79 438.23
15 28.30 27.70 0.00 538.50 439.13 99.37 438.96
16 36.60 36.00 0.00 538.42 439.15 99.27 438.92
17 49.80 49.20 0.00 538.54 439.19 99.35 438.92
18 50.30 49.70 0.00 538.62 439.37 99.25 439.21
19 50.30 49.70 0.00 538.47 439.19 99.28 438.90
20 50.20 49.60 0.00 538.64 439.16 99.48 438.87
21 49.90 49.30 0.00 538.54 439.10 99.44 438.77
22 44.50 43.90 0.00 538.55 438.91 99.64 438.55
23 43.70 43.10 0.00 538.55 438.73 99.82 438.28
24 33.20 32.60 0.00 538.76 438.28 100.48 437.64
AVG 33.00 31.03 1.24 538.59 439.09 99.50 438.91
MAX 50.30 49.70 16.70 539.00 439.82 100.48 440.16
MIN 14.50 1.10 0.00 538.32 438.28 98.59 437.64
BUILDING STRONG®