US Army Corps of Engineers

Lower Monumental Dam

Monday June 1, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 62.80 12.10 50.10 538.55 438.52 100.03 438.89
2 62.80 12.10 50.10 538.58 438.53 100.05 438.69
3 62.90 12.10 50.20 538.70 438.57 100.13 438.72
4 62.90 12.10 50.20 538.68 438.53 100.15 438.84
5 63.00 12.10 50.20 538.45 438.50 99.95 438.67
6 62.70 12.10 50.00 538.66 438.56 100.10 438.80
7 62.80 12.10 50.10 538.70 438.55 100.15 438.73
8 62.80 12.10 50.10 538.66 438.55 100.11 438.65
9 62.90 12.10 50.10 538.69 438.55 100.14 438.70
10 62.80 12.10 50.00 538.68 438.53 100.15 438.77
11 62.80 12.10 50.10 538.72 438.55 100.17 438.88
12 62.90 12.10 50.20 538.70 438.53 100.17 438.78
13 63.10 12.20 50.30 539.03 438.55 100.48 438.83
14 65.80 12.20 53.00 538.75 438.60 100.15 438.90
15 65.70 12.10 53.00 538.79 438.60 100.19 438.77
16 65.70 12.10 53.00 538.80 438.64 100.16 438.95
17 65.70 12.20 53.00 538.66 438.64 100.02 438.82
18 67.10 12.20 52.80 538.48 438.62 99.86 439.12
19 59.10 12.20 46.30 538.61 438.43 100.18 438.51
20 58.60 12.20 45.80 538.44 438.41 100.03 438.58
21 58.50 12.20 45.70 538.50 438.41 100.09 438.61
22 58.50 12.10 45.70 538.56 438.37 100.19 438.50
23 58.40 12.10 45.70 538.46 438.47 99.99 438.68
24 58.30 12.10 45.60 538.39 438.44 99.95 438.49
AVG 62.44 12.13 49.64 538.63 438.53 100.11 438.75
MAX 67.10 12.20 53.00 539.03 438.64 100.48 439.12
MIN 58.30 12.10 45.60 538.39 438.37 99.86 438.49
BUILDING STRONG®