Bonneville Dam & Lake on Columbia River

November 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	Project Average Tailwater	2nd Powerhouse Total MWh	2nd Powerhouse Flow kcfs
1	10000	417	100	96.10	96.10	81.30	2.40	76.20	75.90	9.20	66.70	9.40	8180	67.00
2				109.50	109.50	94.70	2.40	76.10	76.00	9.80	66.20	10.00		68.00
3				100.30	97.30	82.50	2.40	76.40	76.10	9.00	67.10	9.30		66.60
4				109.90	113.90	99.10	2.40	76.00	76.10	10.30	65.80	10.50		66.20
5				125.70	125.70	110.90	2.40	75.90	75.80	11.40	64.40	11.60		66.80
6				121.70	123.70	108.90	2.40	75.80	75.70	11.60	64.10	11.80		66.90
7				115.80	121.80	107.00	2.40	75.20	75.40	11.40	64.00	11.60		66.60
8				120.60	116.60	101.80	2.40	75.60	75.10	11.30	63.80	11.50		65.90
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TOT	10000		100
AVG	10000	417	100	112.45	113.08	98.27	2.40	75.90	75.76	10.50	65.26	10.71	8180	66.75

MAX	10000			125.70	125.70	110.90	2.40	76.40	76.10	11.60	67.10	11.80	8180	68.00
MIN	10000			96.10	96.10	81.30	2.40	75.20	75.10	9.00	63.80	9.30	8180	65.90