Priest Rapids Dam & Reservoir

January 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	17768	740	22	138.00	138.40	138.10	0.00	486.25	486.00	412.21	73.79
2	17996	750	21	139.70	139.50	139.20	0.00	486.30	486.20	412.30	73.90
3	18483	770	20	144.90	144.70	144.40	0.00	486.36	486.30	412.74	73.56
4	17277	720	19	131.70	132.60	132.30	0.00	486.12	486.45	411.74	74.71
5	16603	692	19	127.80	127.70	127.30	0.00	486.15	485.80	411.32	74.48
6	16942	706	20	139.10	134.20	129.60	4.40	487.47	486.54	411.79	74.75
7	18715	780	19	164.10	165.00	147.20	17.60	487.23	487.24	413.90	73.34
8	18148	756	20	163.10	164.50	142.30	21.90	486.85	487.02	413.86	73.16
9	17692	737	19	160.60	161.50	139.80	21.40	486.59	486.46	413.62	72.84
10	18141	756	19	142.40	141.00	140.70	0.00	486.96	486.64	412.37	74.27
11	18845	785	18	148.20	146.00	145.70	0.00	487.55	487.11	412.76	74.35
12	18053	752	19	157.30	157.70	139.80	17.50	487.45	487.43	413.43	74.00
13	18274	761	18	165.00	165.40	144.90	20.20	487.34	487.10	413.94	73.16
14	18147	756	19	153.60	153.40	141.70	11.40	487.39	487.22	413.19	74.03
15	17768	740	19	169.20	168.80	139.20	29.20	487.50	487.31	414.16	73.15
16	18742	781	19	173.10	173.80	149.50	23.90	487.31	487.03	414.57	72.46
17	19398	808	20	157.40	156.90	151.50	4.90	487.46	487.45	413.62	73.83
18	18866	786	20	166.30	166.40	149.00	17.10	487.43	487.35	414.19	73.16
19	19448	810	20	167.20	167.60	154.50	12.90	487.32	487.29	414.36	72.93
20	19575	816	21	157.60	157.50	153.50	3.70	487.34	487.39	413.70	73.69
21				160.70	159.50	153.40	5.80	487.64	487.43	413.82	73.61
22				154.30	157.20	153.50	3.40	486.86	487.21	413.71	73.50
23				147.60	150.90	150.60	0.00	485.95	486.43	413.27	73.16
24				147.80	142.00	141.70	0.00	487.51	486.57	412.50	74.07
25				157.00	157.10	146.60	10.20	487.49	487.17	413.58	73.59
26				178.70	180.70	133.90	46.50	486.98	487.42	414.58	72.84
27				158.30	157.80	138.50	19.00	487.09	486.91	413.30	73.61
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31

TOT	364881		391
AVG	18244	760	20	154.47	154.36	143.27	10.78	487.03	486.91	413.28	73.63

MAX	19575			178.70	180.70	154.50	46.50	487.64	487.45	414.58	74.75
MIN	16603			127.80	127.70	127.30	0.00	485.95	485.80	411.32	72.46