US Army Corps of Engineers

Lower Monumental Dam

Thursday June 11, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 51.10 12.10 36.90 538.35 438.46 99.89 438.47
2 49.50 12.10 36.80 538.27 438.57 99.70 438.75
3 49.60 12.20 36.80 538.38 438.55 99.83 438.81
4 49.50 12.10 36.80 538.14 438.50 99.64 438.72
5 49.60 12.20 36.70 538.04 438.52 99.52 438.72
6 49.80 12.20 37.00 538.18 438.58 99.60 438.80
7 49.80 12.20 37.00 538.14 438.76 99.38 438.88
8 51.30 12.20 37.10 538.14 438.59 99.55 438.85
9 49.70 12.20 37.00 538.10 438.55 99.55 438.65
10 49.70 12.20 36.90 538.14 438.60 99.54 438.69
11 49.80 12.20 37.00 538.08 438.62 99.46 438.75
12 49.80 12.10 37.10 538.12 438.55 99.57 438.75
13 49.70 12.10 37.00 538.15 438.59 99.56 438.86
14 49.90 12.10 37.10 538.12 438.60 99.52 438.85
15 49.80 12.20 37.00 538.21 438.64 99.57 438.91
16 49.70 12.20 37.00 538.17 438.63 99.54 439.02
17 51.20 12.20 36.90 538.13 438.59 99.54 438.88
18 49.70 12.20 36.90 538.16 438.66 99.50 438.85
19 49.60 12.20 36.80 538.18 438.60 99.58 438.73
20 44.90 12.20 32.10 538.26 438.46 99.80 438.66
21 44.80 12.10 32.10 538.19 438.47 99.72 438.53
22 44.90 12.20 32.10 538.28 438.38 99.90 438.53
23 44.80 12.10 32.00 538.26 438.40 99.86 438.45
24 44.80 12.20 32.10 538.28 438.39 99.89 438.50
AVG 48.88 12.17 35.93 538.19 438.55 99.63 438.74
MAX 51.30 12.20 37.10 538.38 438.76 99.90 439.02
MIN 44.80 12.10 32.00 538.04 438.38 99.38 438.45
BUILDING STRONG®