US Army Corps of Engineers

Lower Monumental Dam

Friday June 5, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 48.90 12.20 36.20 538.60 438.34 100.26 438.31
2 48.90 12.10 36.10 538.60 438.36 100.24 438.48
3 50.40 12.10 36.20 538.61 438.35 100.26 438.45
4 48.90 12.10 36.20 538.64 438.36 100.28 438.20
5 48.90 12.20 36.10 538.53 438.35 100.18 438.38
6 48.50 12.10 35.80 538.53 438.36 100.17 438.36
7 48.50 12.10 35.80 538.49 438.37 100.12 438.51
8 48.50 12.20 35.80 538.44 438.38 100.06 438.39
9 47.70 12.20 34.90 538.45 438.30 100.15 438.19
10 44.80 12.10 32.10 538.41 438.32 100.09 438.31
11 45.00 12.10 32.20 538.47 438.31 100.16 438.27
12 45.00 12.10 32.20 538.46 438.31 100.15 438.39
13 45.00 12.20 32.20 538.68 438.33 100.35 438.29
14 45.30 12.40 32.40 538.52 438.26 100.26 438.20
15 45.00 12.20 32.30 538.64 438.26 100.38 438.27
16 45.10 12.10 32.40 538.55 438.24 100.31 438.10
17 45.00 12.10 32.30 538.59 438.22 100.37 438.19
18 45.10 12.20 32.30 538.55 438.26 100.29
19
20
21
22
23
24
AVG 46.92 12.16 34.08 538.54 438.32 100.23 438.31
MAX 50.40 12.40 36.20 538.68 438.38 100.38 438.51
MIN 44.80 12.10 32.10 538.41 438.22 100.06 438.10
BUILDING STRONG®