Lower Granite Dam & Lake

July 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	Midnight Lewiston Gage ft
1	4778	199	52	47.20	44.80	26.70	17.60	736.11	735.95	634.36	101.59	736.62
2	4687	195	52	43.40	44.10	26.20	17.30	735.97	736.01	634.53	101.48	736.43
3				39.90	40.70	21.70	18.40	735.80	735.83	634.49	101.34	736.16
4				36.20	35.20	16.50	18.30	736.02	735.97	634.41	101.56	736.42
5				35.50	34.80	16.30	18.00	736.18	736.16	634.14	102.02	736.59
6				34.90	35.50	17.30	17.70	736.04	736.10	634.18	101.92	736.42
7				36.80	37.10	18.80	17.50	735.92	736.02	634.20	101.82	736.29
8				36.60	37.10	19.20	17.40	735.81	735.87	634.33	101.54	736.22
9				34.00	35.20	17.40	17.40	735.53	735.73	634.35	101.38	735.86
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TOT	9465		105
AVG	4733	197	52	38.28	38.28	20.01	17.73	735.93	735.96	634.33	101.63	736.33

MAX	4778			47.20	44.80	26.70	18.40	736.18	736.16	634.53	102.02	736.62
MIN	4687			34.00	34.80	16.30	17.30	735.53	735.73	634.14	101.34	735.86