US Army Corps of Engineers

Lower Monumental Dam

Monday December 15, 2025

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 40.40 39.80 0.00 538.65 438.60 100.05 438.08
2 34.90 34.30 0.00 538.46 438.53 99.93 437.98
3 34.30 33.70 0.00 538.58 438.49 100.09 437.94
4 27.60 27.00 0.00 538.60 438.28 100.32 437.65
5 27.30 26.70 0.00 538.54 438.52 100.02 438.03
6 27.30 26.70 0.00 538.66 438.37 100.29 437.76
7 27.30 26.70 0.00 538.61 438.38 100.23 437.83
8 27.00 26.40 0.00 538.75 438.53 100.22 438.02
9 27.00 26.40 0.00 538.66 438.40 100.26 437.83
10 27.10 26.50 0.00 538.77 438.52 100.25 438.01
11 27.20 26.60 0.00 538.72 438.55 100.17 438.05
12 27.10 26.50 0.00 538.80 438.47 100.33 437.86
13 28.70 26.60 0.00 538.76 438.55 100.21 438.00
14 27.30 26.70 0.00 538.76 438.39 100.37 437.77
15 27.50 26.90 0.00 538.80 438.52 100.28 438.00
16 34.40 33.80 0.00 538.75 438.63 100.12 438.15
17 35.30 34.70 0.00 538.87 438.65 100.22 438.17
18 35.40 34.80 0.00 538.78 438.85 99.93 438.53
19 35.30 34.70 0.00 538.85 438.76 100.09 438.41
20 35.20 34.60 0.00 538.79 438.84 99.95 438.52
21 35.40 34.80 0.00 538.82 438.82 100.00 438.45
22 35.00 34.40 0.00 538.79 439.05 99.74 438.81
23 35.00 34.40 0.00 538.83 438.84 99.99 438.50
24 28.90 26.80 0.00 538.91 438.74 100.17 438.37
AVG 31.16 30.44 0.00 538.73 438.59 100.13 438.12
MAX 40.40 39.80 0.00 538.91 439.05 100.37 438.81
MIN 27.00 26.40 0.00 538.46 438.28 99.74 437.65
BUILDING STRONG®