Priest Rapids Dam & Reservoir

June 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	16426	684	48	166.00	165.30	125.30	39.00	487.48	487.32	413.39	73.93
2	15165	632	48	197.50	197.30	118.80	77.40	487.53	487.43	415.09	72.34
3	15636	652	48	207.30	207.60	123.30	83.20	487.44	487.48	415.75	71.73
4	14088	587	48	203.00	204.60	111.30	92.20	487.01	487.10	415.79	71.31
5	15890	662	47	171.80	172.60	122.90	48.70	486.81	486.72	414.52	72.20
6	14089	587	46	169.40	167.70	107.60	59.10	487.25	487.16	413.45	73.71
7	12958	540	46	176.30	178.90	100.70	77.20	486.54	486.87	414.53	72.34
8	16497	687	46	175.70	172.60	127.90	43.70	487.36	486.90	414.96	71.94
9	14203	592	47	168.40	171.90	109.50	61.50	486.43	486.90	414.17	72.73
10				141.40	147.20	120.90	24.70	484.82	485.67	412.66	73.01
11				141.40	140.60	117.40	22.40	485.04	484.86	412.54	72.32
12				140.80	136.90	111.80	24.30	486.12	485.61	412.56	73.05
13				139.40	137.60	111.00	25.80	486.60	486.14	412.74	73.40
14				150.10	148.70	120.80	27.00	486.95	486.53	413.34	73.19
15				163.30	161.30	126.30	34.10	487.50	487.36	414.49	72.87
16				158.30	158.50	125.00	32.50	487.45	487.20	414.64	72.56
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TOT	134952		424
AVG	14995	625	47	166.88	166.83	117.53	48.30	486.77	486.70	414.04	72.66

MAX	16497			207.30	207.60	127.90	92.20	487.53	487.48	415.79	73.93
MIN	12958			139.40	136.90	100.70	22.40	484.82	484.86	412.54	71.31