US Army Corps of Engineers

Lower Monumental Dam

Monday September 1, 2025

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 15.10 12.40 0.60 538.90 439.25 99.65 439.15
2 13.20 12.60 0.00 538.62 439.32 99.30 439.24
3 13.30 12.70 0.00 538.72 439.02 99.70 438.76
4 13.30 12.70 0.00 538.66 439.49 99.17 439.59
5 14.20 12.80 0.70 538.74 439.08 99.66 439.74
6 21.50 12.70 8.10 538.51 438.70 99.81 439.21
7 21.40 12.60 8.10 538.74 438.85 99.89 439.37
8 21.40 12.70 8.10 538.58 438.87 99.71 439.35
9 21.20 12.60 8.00 538.68 438.83 99.85 439.07
10 13.40 12.80 0.00 538.61 439.20 99.41 439.08
11 13.40 12.80 0.00 538.55 439.35 99.20 439.40
12 13.30 12.70 0.00 538.68 439.06 99.62 438.82
13 13.40 12.80 0.00 538.49 439.24 99.25 439.10
14 13.40 12.80 0.00 538.70 439.29 99.41 439.17
15 13.90 13.30 0.00 538.43 439.26 99.17 439.19
16 25.80 25.10 0.00 538.79 439.41 99.38 439.49
17 26.50 25.90 0.00 538.54 439.43 99.11 439.46
18 41.90 41.30 0.00 538.51 439.81 98.70 440.01
19 43.90 43.30 0.00 538.69 439.63 99.06 439.66
20 46.30 45.70 0.00 538.59 439.61 98.98 439.72
21 44.50 43.90 0.00 538.69 439.42 99.27 439.46
22 27.60 25.50 0.00 538.31 439.23 99.08 439.38
23 14.70 14.10 0.00 538.81 439.22 99.59 439.17
24 14.70 12.60 0.00 538.28 438.90 99.38 438.58
AVG 21.72 19.52 1.40 538.62 439.23 99.39 439.30
MAX 46.30 45.70 8.10 538.90 439.81 99.89 440.01
MIN 13.20 12.40 0.00 538.28 438.70 98.70 438.58
BUILDING STRONG®