Priest Rapids Dam & Reservoir

September 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	13583	566	46	99.70	103.10	99.90	2.50	486.01	486.67	408.84	77.83
2	11122	463	47	82.80	83.60	81.00	2.00	485.78	485.22	406.99	78.23
3	8991	375	44	71.30	66.10	63.30	2.20	487.20	485.91	405.28	80.63
4	9651	402	43	70.20	72.10	68.90	2.50	486.71	486.64	405.71	80.93
5	7090	295	41	53.10	51.60	48.70	2.30	487.11	486.09	403.66	82.43
6	5303	221	40	33.10	40.70	35.50	4.60	485.04	485.65	402.22	83.43
7	5351	223	41	40.30	38.60	36.50	1.60	485.52	484.09	402.06	82.03
8	6274	261	40	52.30	45.20	42.50	2.10	487.45	485.63	402.89	82.74
9	7755	323	42	53.50	56.90	53.80	2.40	486.54	486.51	404.08	82.43
10	7885	329	40	57.10	58.10	55.10	2.30	486.26	486.17	404.39	81.78
11				59.30	59.10	56.00	2.30	486.33	486.20	404.45	81.75
12				59.70	59.20	56.30	2.30	486.46	486.13	404.36	81.77
13				45.10	43.20	40.20	2.40	487.00	486.58	402.60	83.98
14				38.80	43.20	40.20	2.40	485.81	486.35	402.63	83.72
15				49.80	46.40	43.70	2.10	486.75	485.44	403.05	82.39
16				70.10	69.70	66.40	2.50	486.85	486.90	405.41	81.49
17				82.80	83.30	80.10	2.60	486.72	487.15	406.87	80.28
18
19
20
21
22
23
24
25
26
27
28
29
30

TOT	83005		424
AVG	8300	346	42	59.94	60.01	56.95	2.42	486.44	486.08	404.44	81.64

MAX	13583			99.70	103.10	99.90	4.60	487.45	487.15	408.84	83.98
MIN	5303			33.10	38.60	35.50	1.60	485.04	484.09	402.06	77.83