Lower Granite Dam & Lake

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	Midnight Lewiston Gage ft
1	4045	169	48	20.40	24.30	23.80	0.00	735.90	736.55	636.57	99.98	736.15
2				17.70	16.10	15.70	0.00	736.38	736.33	636.30	100.03	736.49
3				17.70	18.10	17.50	0.00	736.28	736.32	636.30	100.02	736.40
4				18.70	20.10	19.70	0.00	735.92	736.00	636.01	99.99	735.95
5				18.00	21.40	20.90	0.00	735.07	735.41	635.53	99.88	735.47
6				18.60	18.10	17.70	0.00	735.19	735.20	635.63	99.57	735.49
7				21.20	18.60	18.20	0.00	735.85	735.49	635.37	100.12	736.00
8				21.10	28.30	27.70	0.00	734.07	735.42	635.17	100.25	735.16
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TOT	4045		48
AVG	4045	169	48	19.17	20.62	20.15	0.00	735.58	735.84	635.86	99.98	735.89

MAX	4045			21.20	28.30	27.70	0.00	736.38	736.55	636.57	100.25	736.49
MIN	4045			17.70	16.10	15.70	0.00	734.07	735.20	635.17	99.57	735.16