Bonneville Dam & Lake on Columbia River

January 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	Project Average Tailwater	2nd Powerhouse Total MWh	2nd Powerhouse Flow kcfs
1	14959	623	96	140.60	145.60	140.10	0.50	73.60	73.10	14.40	58.70	14.60	11259	106.50
2	15002	625	96	159.70	142.70	137.10	0.50	75.30	74.10	14.00	60.10	14.20	11293	104.30
3	16056	669	96	148.00	152.00	146.40	0.60	75.10	74.70	14.40	60.30	14.70	12253	113.30
4	16530	689	96	153.90	159.90	154.40	0.60	74.50	74.30	15.30	59.00	15.50	12768	120.80
5	15639	652	96	147.00	153.00	147.40	0.60	73.80	73.60	15.10	58.50	15.30	11849	113.10
6				158.30	155.30	149.70	0.60	74.20	73.40	15.00	58.40	15.20		114.80
7				162.60	154.60	149.10	0.50	74.50	74.30	14.50	59.80	14.90		116.60
8				152.00	160.00	154.50	0.50	73.70	74.10	15.00	59.10	15.20		120.50
9				149.40	155.40	149.70	0.70	73.10	73.00	14.40	58.60	14.50		115.60
10				132.40	132.40	126.80	0.60	73.10	72.60	13.10	59.50	13.30		95.60
11				122.60	117.60	111.90	0.60	73.60	73.40	11.90	61.50	12.10		84.20
12				129.20	127.20	121.60	0.60	73.80	73.50	12.30	61.20	12.60		91.50
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TOT	78186		480
AVG	15637	652	96	146.31	146.31	140.72	0.57	74.03	73.67	14.12	59.56	14.34	11884	108.07

MAX	16530			162.60	160.00	154.50	0.70	75.30	74.70	15.30	61.50	15.50	12768	120.80
MIN	14959			122.60	117.60	111.90	0.50	73.10	72.60	11.90	58.40	12.10	11259	84.20