US Army Corps of Engineers

Lower Monumental Dam

Saturday August 30, 2025

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 21.50 12.60 8.30 538.82 438.48 100.34 438.93
2 21.30 12.40 8.30 538.78 438.51 100.27 438.89
3 21.30 12.40 8.30 538.80 438.53 100.27 438.94
4 21.40 12.40 8.30 538.82 438.49 100.33 438.92
5 22.70 12.40 8.30 538.77 438.71 100.06 438.82
6 21.40 12.50 8.30 538.85 438.57 100.28 438.98
7 21.20 12.40 8.30 538.77 438.45 100.32 438.89
8 21.40 12.50 8.30 538.83 438.47 100.36 438.81
9 21.50 12.60 8.30 538.78 438.51 100.27 438.81
10 21.50 12.60 8.30 538.81 438.52 100.29 438.90
11 21.50 12.60 8.30 538.79 438.53 100.26 438.87
12 21.50 12.60 8.20 538.77 438.53 100.24 438.84
13 21.50 12.60 8.30 538.77 438.73 100.04 439.24
14 22.90 12.60 8.30 538.76 438.54 100.22 438.96
15 21.20 12.40 8.20 538.72 438.60 100.12 438.95
16 21.30 12.40 8.20 538.79 438.60 100.19 439.01
17 21.30 12.50 8.20 538.73 438.58 100.15 439.03
18 21.40 12.60 8.20 538.76 438.60 100.16 439.02
19 21.40 12.50 8.20 538.73 438.60 100.13 439.05
20 25.00 16.20 8.20 538.68 438.78 99.90 439.14
21 25.30 16.50 8.20 538.86 438.76 100.10 439.14
22 25.40 16.50 8.30 538.72 438.86 99.86 439.30
23 26.80 16.40 8.20 538.80 438.87 99.93 439.29
24 21.40 12.50 8.30 538.80 438.68 100.12 439.14
AVG 22.21 13.15 8.26 538.78 438.60 100.18 439.00
MAX 26.80 16.50 8.30 538.86 438.87 100.36 439.30
MIN 21.20 12.40 8.20 538.68 438.45 99.86 438.81
BUILDING STRONG®