Priest Rapids Dam & Reservoir

August 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	10886	454	50	102.40	104.40	80.50	23.40	484.91	485.28	408.36	76.92
2	8901	371	48	87.20	87.80	64.80	22.60	484.74	484.99	406.84	78.15
3	8191	341	47	84.90	77.20	58.20	18.70	486.86	485.37	405.86	79.51
4	10821	451	50	98.30	104.40	79.60	24.40	485.16	485.60	408.41	77.19
5	9586	399	50	97.00	94.10	70.00	23.70	485.98	485.39	407.51	77.88
6	9435	393	49	98.40	95.40	68.00	27.00	486.80	486.57	407.60	78.97
7	11102	463	50	106.60	108.70	81.20	27.00	486.23	486.52	408.72	77.80
8	9343	389	51	93.40	93.30	67.40	25.50	486.27	486.05	407.41	78.64
9	7596	316	49	83.50	80.20	53.60	26.20	487.15	486.32	406.21	80.11
10	8642	360	47	86.70	90.40	62.20	27.60	486.16	486.72	406.98	79.74
11	8094	337	49	81.50	81.30	58.70	22.20	486.23	484.82	406.37	78.45
12	10209	425	49	95.00	89.90	73.10	16.30	487.60	486.30	407.16	79.14
13	13182	549	50	97.20	102.70	97.20	5.10	486.14	485.34	408.39	76.95
14	12936	539	50	98.20	96.00	93.20	2.40	486.72	486.15	407.95	78.20
15	12274	511	50	92.30	90.70	87.90	2.50	487.15	486.28	407.44	78.84
16	14369	599	50	104.10	109.70	106.90	2.30	485.63	485.66	409.09	76.57
17	12549	523	51	94.50	94.40	92.50	1.50	485.66	485.00	407.74	77.26
18	11704	488	50	85.20	87.30	85.40	1.40	485.08	485.00	407.12	77.88
19	11026	459	43	91.20	83.90	80.90	2.40	487.09	485.76	406.46	79.30
20	12788	533	47	98.50	101.30	94.90	5.80	486.35	485.64	408.28	77.36
21	13667	569	51	104.10	103.00	100.10	2.40	486.63	485.78	408.46	77.32
22	10122	422	47	73.20	75.00	72.10	2.40	486.14	485.82	405.87	79.95
23	10330	430	42	74.50	76.90	73.90	2.50	485.46	486.02	405.97	80.05
24	12647	527	48	94.90	95.10	93.20	1.30	485.40	485.02	407.88	77.14
25	13615	567	50	103.50	103.70	102.10	1.20	485.34	485.11	408.50	76.61
26	12865	536	51	97.30	95.70	94.20	1.00	485.78	485.24	407.92	77.32
27	14153	590	49	105.90	108.30	106.50	1.20	485.11	485.18	408.82	76.36
28	10755	448		80.70	78.80	76.80	1.60	485.66	485.21	406.34	78.87
29	7536	314	46	56.40	54.30	51.90	2.10	486.23	485.65	403.83	81.82
30	10075	420	46	70.60	74.00	71.50	2.10	485.28	485.58	405.88	79.70
31	8580	358	44	67.90	63.20	60.70	2.10	486.58	485.60	404.73	80.87

TOT	337979		1454
AVG	10903	454	48	90.49	90.36	79.33	10.58	486.05	485.64	407.23	78.42

MAX	14369			106.60	109.70	106.90	27.60	487.60	486.72	409.09	81.82
MIN	7536			56.40	54.30	51.90	1.00	484.74	484.82	403.83	76.36