Chief Joseph Dam & Rufus Woods 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	35146	1464	23	162.80	160.50	114.60	45.90	955.20	954.10	785.80	168.30
2				135.80	145.90	142.20	3.70	952.60	953.20	785.10	168.10
3				128.90	131.20	131.20	0.00	952.00	952.50	783.40	169.10
4				144.40	135.90	135.90	0.00	954.20	952.70	783.70	169.00
5				140.10	149.00	149.00	0.00	951.90	951.70	785.00	166.70
6				97.20	90.60	90.60	0.00	953.60	952.80	781.30	171.50
7				98.30	97.10	97.10	0.00	953.90	952.70	780.30	172.40
8				107.60	113.00	113.00	0.00	952.50	953.10	782.50	170.60
9
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31

TOT	35146		23
AVG	35146	1464	23	126.89	127.90	121.70	6.20	953.24	952.85	783.39	169.46

MAX	35146			162.80	160.50	149.00	45.90	955.20	954.10	785.80	172.40
MIN	35146			97.20	90.60	90.60	0.00	951.90	951.70	780.30	166.70