US Army Corps of Engineers

Lower Monumental Dam

Thursday June 4, 2026

New Date:

HourTotal Outflow kcfsGeneration Flow kcfsSpill kcfsForebay ElevationTailwater ElevationAverage HeadNav Lock Tailwater Elevation
1 52.50 12.30 38.20 538.44 438.33 100.11 438.36
2 51.00 12.20 38.10 538.45 438.29 100.16 438.35
3 50.80 12.20 38.00 538.46 438.24 100.22 438.26
4 50.80 12.20 38.00 538.45 438.28 100.17 438.29
5 50.80 12.20 37.90 538.31 438.28 100.03 438.22
6 48.90 12.20 36.10 538.35 438.28 100.07 438.28
7 50.40 12.30 36.00 538.41 438.26 100.15 438.24
8 48.80 12.20 36.00 538.41 438.31 100.10 438.19
9 48.80 12.20 36.10 538.40 438.28 100.12 438.28
10 48.90 12.20 36.10 538.41 438.30 100.11 438.33
11 48.90 12.20 36.10 538.44 438.28 100.16 438.38
12 49.10 12.20 36.30 538.40 438.31 100.09 438.37
13 49.00 12.20 36.10 538.48 438.31 100.17 438.33
14 49.10 12.20 36.30 538.49 438.29 100.20 438.29
15 49.10 12.30 36.20 538.48 438.28 100.20 438.32
16 48.90 12.20 36.10 538.53 438.30 100.23 438.33
17 48.90 12.20 36.10 538.51 438.31 100.20 438.34
18 49.10 12.30 36.20 538.57 438.30 100.27 438.31
19 49.30 12.50 36.20 538.54 438.31 100.23 438.29
20 49.20 12.40 36.20 538.57 438.34 100.23 438.31
21 49.00 12.30 36.20 538.56 438.31 100.25 438.27
22 49.30 12.50 36.30 538.58 438.31 100.27 438.40
23 49.20 12.40 36.30 538.61 438.31 100.30 438.39
24 49.10 12.30 36.20 538.60 438.36 100.24 438.46
AVG 49.54 12.27 36.55 538.48 438.30 100.18 438.32
MAX 52.50 12.50 38.20 538.61 438.36 100.30 438.46
MIN 48.80 12.20 36.00 538.31 438.24 100.03 438.19
BUILDING STRONG®