McNary Dam & Lake Wallula

February 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	19030	793	24	160.30	153.60	150.80	0.00	339.49	339.30	266.26	73.04
2	19038	793	24	151.30	152.60	149.80	0.00	339.36	339.39	265.97	73.42
3	18984	791	24	149.10	151.50	148.70	0.00	339.15	339.42	265.78	73.64
4	19058	794	24	167.10	158.90	149.10	7.00	339.79	339.55	265.77	73.78
5				167.30	168.00	150.00	15.30	339.61	339.56	266.12	73.44
6				155.70	163.10	150.00	10.30	339.20	339.54	266.10	73.44
7				147.10	153.40	150.60	0.00	338.94	339.10	265.94	73.16
8				139.80	154.20	151.40	0.00	338.04	338.70	265.89	72.81
9				137.90	152.80	150.00	0.00	337.39	337.61	266.05	71.56
10				174.10	144.90	142.10	0.00	338.93	338.00	265.78	72.22
11				166.90	154.90	141.10	11.00	339.50	339.47	265.83	73.64
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28

TOT	76110		96
AVG	19028	793	24	156.05	155.26	148.51	3.96	339.04	339.06	265.95	73.10

MAX	19058			174.10	168.00	151.40	15.30	339.79	339.56	266.26	73.78
MIN	18984			137.90	144.90	141.10	0.00	337.39	337.61	265.77	71.56