Lower Monumental Dam & Lake

June 2026

Day of Month	Inflow kcfs	Total Outflow kcfs	Generation Flow kcfs	Spill kcfs	Midnight Reservoir Elevation	Average Forebay Elevation	Average Tailwater Elevation	Average Head feet
1	62.20	62.40	12.10	49.60	538.39	538.63	438.53	100.10
2	56.10	56.40	12.20	43.40	538.29	538.32	438.47	99.85
3	51.40	50.90	12.20	38.00	538.44	538.40	438.30	100.10
4	50.10	49.50	12.30	36.60	538.60	538.48	438.30	100.18
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30

TOT
AVG	54.95	54.80	12.20	41.90	538.43	538.46	438.40	100.06

MAX	62.20	62.40	12.30	49.60	538.60	538.63	438.53	100.18
MIN	50.10	49.50	12.10	36.60	538.29	538.32	438.30	99.85