Rocky Reach Dam & Lake

September 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	16278	678	0	100.49	95.89	95.89	0.00	705.87	706.28	616.08	90.20
2	12116	505	0	72.13	70.83	70.83	0.00	706.50	706.18	614.83	91.35
3	9478	395	0	45.55	55.00	55.00	0.00	704.74	705.67	613.78	91.89
4	10391	433	0	64.42	60.87	60.82	0.05		705.58	614.02	91.56
5	7781	324	0	43.30	45.10	45.10	0.00	705.23	705.74	613.23	92.51
6	6634	276	0	41.32	38.24	38.24	0.00	705.90	705.71	612.76	92.95
7	7630	318	0	42.13	43.91	43.91	0.00	705.54	706.21	613.27	92.94
8	8806	367	0	54.08	51.78	51.78	0.00	705.92	705.89	613.68	92.21
9	9476	395	0	54.29	55.99	55.99	0.00	705.49	705.99	613.89	92.10
10	7569	315	0	41.68	43.68	43.68	0.00	705.17	706.02	612.96	93.06
11	7145	298	0	41.98	41.58	41.58	0.00	705.32	705.84	612.94	92.90
12	7573	316	0	46.02	44.02	44.02	0.00	705.74	705.86	613.37	92.49
13	6500	271	0	40.17	37.17	37.17	0.00	706.39	706.29	612.85	93.44
14	7481	312	0	41.87	43.98	43.08	0.90	705.87	706.50	613.53	92.97
15				51.77	53.67	51.45	2.22	705.42	706.23	613.93	92.30
16				42.91	42.91	42.90	0.00	705.55	705.65	613.26	92.39
17				53.68	51.88	51.88	0.00	705.82	705.89	613.50	92.39
18				53.19	49.59	48.97	0.62	706.57	706.24	613.60	92.64
19				41.42	49.02	49.02	0.00	705.04	705.79	613.44	92.35
20				43.50	41.30	41.30	0.00	705.55	705.65	612.92	92.73
21				58.39	56.29	56.26	0.03	705.78	706.10	613.84	92.26
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TOT	124858		0
AVG	8918	372	0	51.16	51.08	50.90	0.18	705.67	705.97	613.60	92.36

MAX	16278			100.49	95.89	95.89	2.22	706.57	706.50	616.08	93.44
MIN	6500			40.17	37.17	37.17	0.00	704.74	705.58	612.76	90.20