Wanapum Dam & Lake

February 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	116.60	129.30	127.90	0.00	569.03	569.66	491.68	77.98
2	133.70	131.60	130.20	0.00	569.32	569.70	491.55	78.15
3	149.10	135.10	132.60	1.20	571.23	570.41	491.87	78.54
4	130.50	147.90	145.20	1.40	568.82	569.87	492.82	77.05
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TOT
AVG	132.47	135.97	133.98	0.65	569.60	569.91	491.98	77.93

MAX	149.10	147.90	145.20	1.40	571.23	570.41	492.82	78.54
MIN	116.60	129.30	127.90	0.00	568.82	569.66	491.55	77.05