Wanapum Dam & Lake

January 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	142.40	139.50	138.10	0.00	569.03	567.94	492.15	75.79
2	149.60	144.40	143.00	0.00	569.75	569.26	492.43	76.83
3	146.50	147.20	145.80	0.00	569.65	569.32	492.79	76.53
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TOT
AVG	146.17	143.70	142.30	0.00	569.48	568.84	492.46	76.38

MAX	149.60	147.20	145.80	0.00	569.75	569.32	492.79	76.83
MIN	142.40	139.50	138.10	0.00	569.03	567.94	492.15	75.79