US Army Corps of Engineers

Lower Monumental Dam

Thursday April 9, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 57.10 12.20 42.80 538.45 438.45 100.00 438.57
2 55.80 12.20 43.00 538.46 438.47 99.99 438.60
3 55.70 12.20 43.00 538.46 438.41 100.05 438.49
4 55.80 12.10 43.00 538.46 438.43 100.03 438.47
5 56.60 12.10 43.90 538.46 438.53 99.93 438.62
6 59.70 12.10 47.00 538.42 438.55 99.87 438.76
7 59.90 12.10 47.20 538.50 438.57 99.93 438.72
8 60.00 12.20 47.20 538.49 438.57 99.92 438.78
9 60.10 12.20 47.30 538.53 438.64 99.89 438.93
10 60.10 12.10 47.40 538.55 438.65 99.90 438.91
11 59.80 12.10 47.10 538.55 438.66 99.89 438.92
12 59.40 12.20 46.70 538.55 438.67 99.88 438.86
13 59.90 12.20 47.10 538.57 438.76 99.81 438.93
14 63.00 12.20 50.20 538.56 438.73 99.83 439.02
15 62.70 12.20 49.90 538.57 438.73 99.84 438.92
16 63.10 12.20 50.30 538.54 438.76 99.78 439.15
17 62.90 12.30 50.00 538.55 438.71 99.84 439.02
18 62.80 12.20 50.00 538.39 438.70 99.69 439.12
19 64.20 12.20 49.90 538.46 438.76 99.70 439.18
20 62.60 12.20 49.80 538.41 438.77 99.64 439.04
21 62.40 12.20 49.60 538.38 438.77 99.61 439.34
22 63.90 12.20 49.70 538.40 438.68 99.72 439.05
23 62.30 12.10 49.60 538.35 438.72 99.63 439.21
24 62.50 12.20 49.70 538.33 438.81 99.52 439.06
AVG 60.51 12.17 47.56 538.47 438.65 99.83 438.91
MAX 64.20 12.30 50.30 538.57 438.81 100.05 439.34
MIN 55.70 12.10 42.80 538.33 438.41 99.52 438.47
BUILDING STRONG®