Priest Rapids Dam & Reservoir

December 2025

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	13558	565	18	100.50	100.30	100.00	0.00	485.64	485.58	408.97	76.61
2	13143	548	18	97.10	97.00	96.70	0.00	485.64	485.65	408.50	77.15
3	13210	550	18	96.20	97.90	97.60	0.00	485.16	485.42	408.69	76.73
4	12493	521	20	91.40	91.80	91.50	0.00	485.02	485.03	408.00	77.03
5	15834	660	19	127.20	123.70	120.30	3.10	486.02	485.87	410.85	75.02
6	15740	656	19	123.40	119.60	118.10	1.20	487.06	486.09	410.55	75.54
7	14894	621	19	106.40	109.50	109.20	0.00	486.21	486.52	409.77	76.75
8	14086	587	19	104.20	102.60	102.30	0.00	486.63	486.55	409.23	77.32
9	13885	579	20	102.30	101.70	101.30	0.00	486.80	486.64	409.09	77.55
10	11255	469	20	81.60	78.70	78.50	0.00	487.57	486.74	406.98	79.76
11	13601	567	19	97.60	98.90	97.40	1.10	487.23	487.36	408.75	78.61
12	16125	672	18	116.40	119.30	119.00	0.00	486.44	486.98	410.67	76.31
13	15716	655	18	117.90	116.90	116.60	0.00	486.71	486.48	410.39	76.09
14	15102	629	18	110.80	111.40	111.10	0.00	486.56	486.56	409.89	76.67
15	14963	623	18	110.60	109.90	109.60	0.00	486.77	486.62	409.79	76.83
16	17415	726	18	133.00	131.80	131.50	0.00	487.09	487.04	411.68	75.36
17	17971	749	19	147.70	145.90	137.60	8.00	487.56	487.32	412.74	74.58
18	18772	782	19	152.40	152.60	144.80	7.50	487.50	487.54	413.35	74.19
19				141.60	146.10	142.90	2.90	486.28	486.78	412.84	73.94
20				121.40	120.30	119.90	0.00	486.58	486.64	410.68	75.96
21				150.10	149.70	149.30	0.00	486.69	486.80	413.19	73.61
22				143.60	140.90	140.60	0.00	487.43	486.72	412.43	74.29
23				149.30	149.70	149.40	0.00	487.32	487.08	413.19	73.89
24				141.60	140.20	137.50	2.40	487.70	487.14	412.38	74.76
25				142.10	146.00	142.40	3.30	486.67	486.73	412.74	73.99
26
27
28
29
30
31

TOT	267763		337
AVG	14876	620	19	120.26	120.10	118.60	1.18	486.65	486.56	410.61	75.94

MAX	18772			152.40	152.60	149.40	8.00	487.70	487.54	413.35	79.76
MIN	11255			81.60	78.70	78.50	0.00	485.02	485.03	406.98	73.61