Priest Rapids Dam & Reservoir

April 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	16578	691	45	145.50	149.40	125.70	22.60	486.10	486.89	412.84	74.05
2	12326	514	45	119.30	119.60	91.90	26.90	486.01	485.10	410.38	74.72
3	14846	619	44	135.90	138.40	113.70	23.70	485.30	485.35	411.92	73.43
4	16576	691	45	132.60	128.40	127.40	0.00	486.48	484.79	411.51	73.28
5	16626	693	45	122.50	127.80	126.90	0.00	485.00	485.08	411.44	73.64
6	15874	661	46	124.40	118.00	117.10	0.00	486.77	486.35	410.68	75.67
7	14136	589	45	99.90	105.60	104.70	0.10	485.20	484.79	409.62	75.17
8	13354	556	45	119.90	116.90	99.10	16.90	486.04	485.50	410.32	75.18
9	12775	532	45	120.00	120.70	95.20	24.60	485.84	485.69	410.48	75.21
10	13946	581	46	129.80	130.80	104.50	25.50	485.56	486.01	411.32	74.69
11	13604	567	45	123.60	127.60	102.60	24.10	484.44	485.47	411.09	74.38
12	14678	612	45	143.00	137.20	111.50	24.90	486.07	485.77	411.84	73.93
13	12972	540	46	127.40	128.20	96.30	31.00	485.87	486.13	411.06	75.07
14	13388	558	45	131.80	128.50	99.60	28.00	486.78	486.19	411.17	75.02
15	14443	602	45	130.00	128.80	106.20	21.70	487.10	487.05	411.31	75.74
16	13236	552	45	125.90	128.00	96.80	30.40	486.54	487.05	411.09	75.96
17	15254	636	45	143.40	150.80	117.90	31.90	484.45	485.73	412.91	72.82
18				134.20	132.50	111.20	20.50	484.93	484.11	411.74	72.37
19				131.50	134.80	111.50	22.40	483.96	484.85	411.82	73.03
20				148.20	149.20	131.50	16.70	483.65	483.48	413.19	70.29
21				150.70	151.10	128.10	22.00	483.51	483.46	413.21	70.25
22				137.80	138.30	115.30	22.00	483.36	483.34	412.13	71.21
23				136.20	129.80	105.00	23.90	485.24	483.55	411.35	72.20
24				153.00	148.70	124.30	23.40	486.44	485.62	412.95	72.67
25
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29
30

TOT	244612		767
AVG	14389	600	45	131.94	132.05	111.00	20.13	485.44	485.31	411.56	73.75

MAX	16626			153.00	151.10	131.50	31.90	487.10	487.05	413.21	75.96
MIN	12326			99.90	105.60	91.90	0.00	483.36	483.34	409.62	70.25