US Army Corps of Engineers

Lower Monumental Dam

Monday January 26, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 14.80 14.60 0.00 537.83 438.43 99.40 437.87
2 14.60 14.40 0.00 537.93 438.38 99.55 437.77
3 15.00 14.80 0.00 537.77 438.49 99.28 437.99
4 15.50 15.30 0.00 537.87 438.45 99.42 438.04
5 27.60 27.40 0.00 537.46 438.61 98.85
6 41.80 41.60 0.00 538.00 438.83 99.17 438.41
7 41.80 41.60 0.00 537.77 438.97 98.80 438.65
8 41.40 41.20 0.00 537.90 439.01 98.89 438.75
9 41.10 40.90 0.00 537.82 439.03 98.79 438.77
10 42.30 42.10 0.00 537.89 439.01 98.88 438.74
11 27.30 27.10 0.00 538.12 438.85 99.27 438.57
12 20.00 19.80 0.00 537.85 438.84 99.01 438.61
13 14.00 13.80 0.00 538.07 438.70 99.37 438.27
14 14.70 13.00 0.00 537.83 438.67 99.16 438.21
15 13.70 13.50 0.00 538.10 438.55 99.55 438.02
16 14.20 14.00 0.00 537.88 438.52 99.36 438.01
17 20.60 20.40 0.00 537.91 438.59 99.32 438.07
18 31.90 31.70 0.00 538.03 438.64 99.39 438.22
19 32.60 32.40 0.00 537.92 438.60 99.32 438.25
20 32.90 32.70 0.00 538.20 438.84 99.36 438.61
21 32.10 31.90 0.00 538.21 438.65 99.56 438.26
22 27.70 27.50 0.00 538.50 438.54 99.96 438.07
23 13.80 13.60 0.00 538.36 438.55 99.81 438.06
24 13.20 13.00 0.00 538.34 438.34 100.00 437.69
AVG 25.19 24.93 0.00 537.98 438.67 99.31 438.26
MAX 42.30 42.10 0.00 538.50 439.03 100.00 438.77
MIN 13.20 13.00 0.00 537.46 438.34 98.79 437.69