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	15842	660	96	158.30	155.30	149.70	0.60	74.20	73.40	15.00	58.40	15.20	12013	114.80
7	16099	671	96	162.60	154.60	149.10	0.50	74.50	74.30	14.50	59.80	14.90	12441	116.60
8	16560	690	96	152.00	160.00	154.50	0.50	73.70	74.10	15.00	59.10	15.20	12756	120.50
9	15939	664	96	149.40	155.40	149.70	0.70	73.10	73.00	14.40	58.60	14.50	12156	115.60
10	13714	571	96	132.40	132.40	126.80	0.60	73.10	72.60	13.10	59.50	13.30	10286	95.60
11	12453	519	96	122.60	117.60	111.90	0.60	73.60	73.40	11.90	61.50	12.10	9344	84.20
12	13548	564	96	129.20	127.20	121.60	0.60	73.80	73.50	12.30	61.20	12.60	10136	91.50
13	15798	658	96	149.40	151.40	145.80	0.60	73.80	73.60	14.00	59.60	14.20	11998	112.10
14	14740	614	96	133.60	139.60	134.10	0.60	73.20	73.40	13.30	60.10	13.60	11041	101.70
15				151.40	141.40	134.10	2.30	74.10	73.80	13.10	60.70	13.30		102.00
16				122.60	125.60	120.10	0.50	74.10	73.70	12.30	61.40	12.50		90.40
17				123.60	119.60	114.00	0.60	74.40	74.10	11.50	62.60	11.70		86.10
18				134.00	137.00	131.50	0.60	74.20	74.30	12.40	61.90	12.60		102.60
19				142.60	144.60	139.00	0.60	74.20	73.90	13.00	60.90	13.10		109.90
20				150.30	157.30	151.70	0.60	73.90	73.60	13.80	59.80	14.00		118.80
21				152.70	148.70	143.10	0.60	74.10	73.40	13.50	59.90	13.70		110.00
22
23
24
25
26
27
28
29
30
31

TOT	212879		1344
AVG	15206	634	96	143.61	143.85	138.20	0.66	74.01	73.71	13.63	60.08	13.85	11542	106.21

MAX	16560			162.60	160.00	154.50	2.30	75.30	74.70	15.30	62.60	15.50	12768	120.80
MIN	12453			122.60	117.60	111.90	0.50	73.10	72.60	11.50	58.40	11.70	9344	84.20