Lower Monumental Dam & Lake

May 2026

Day of Month	Total Generation MWh	Average Generation MW	Station Use MWh	Inflow kcfs	Total Outflow kcfs	Generation Flow kcfs	Spill kcfs	Midnight Reservoir Elevation	Average Forebay Elevation	Average Tailwater Elevation	Average Head feet
1	2208	92	12	64.90	65.10	12.50	51.90	538.46	538.35	438.54	99.81
2	2142	89	12	63.90	65.30	12.10	52.40	538.06	538.38	438.61	99.77
3	2140	89	12	61.30	59.60	12.10	46.70	538.56	538.46	438.65	99.81
4	2144	89	12	62.40	63.90	12.20	51.00	538.10	538.29	438.72	99.57
5	2191	91	13	70.20	70.40	12.50	57.00	538.06	538.09	438.83	99.26
6	2136	89	12	73.00	72.30	12.20	59.40	538.25	538.12	438.93	99.19
7	2132	89	13	75.00	74.90	12.20	62.10	538.31	538.18	439.01	99.17
8	2130	89	13	82.80	81.80	12.20	68.90	538.57	538.34	439.14	99.20
9	2143	89	13	84.40	85.00	12.20	72.00	538.41	538.28	439.16	99.12
10	2136	89	13	81.90	81.80	12.20	68.80	538.44	538.17	439.03	99.14
11	2143	89	13	83.40	83.10	12.20	70.10	538.52	538.19	439.06	99.13
12	2172	90	13	84.80	84.50	12.40	71.30	538.62	538.31	439.04	99.27
13	2138	89	13	88.90	89.10	12.20	76.00	538.56	538.40	439.40	99.00
14				97.60	97.40	12.20	84.50	538.64	538.24	439.58	98.66
15				90.90	92.90	12.20	80.10	538.04	538.03	439.44	98.59
16				83.30	82.40	12.20	69.40	538.27	538.04	439.20	98.84
17				78.20	78.20	12.20	65.20	538.31	538.21	439.01	99.20
18				70.90	72.00	12.20	59.00	537.97	538.25	438.91	99.34
19				65.00	62.80	12.20	49.80	538.62	538.15	438.65	99.50
20				56.80	57.00	12.20	43.90	538.57	538.70	438.43	100.27
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TOT	27954		165
AVG	2150	90	13	75.98	75.98	12.23	62.98	538.37	538.26	438.97	99.29

MAX	2208			97.60	97.40	12.50	84.50	538.64	538.70	439.58	100.27
MIN	2130			56.80	57.00	12.10	43.90	537.97	538.03	438.43	98.59