Bonneville Dam & Lake on Columbia River

April 2024

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	14029	585	96	145.90	145.90	128.90	4.60	74.40	74.20	13.40	60.80	13.50	12902	118.90
2	14051	585	96	129.60	141.60	127.80	1.40	73.20	74.10	12.80	61.30	12.90	12908	117.80
3	13755	573	96	147.60	139.60	125.70	1.60	74.10	73.50	12.60	60.90	12.80	12574	115.20
4	14395	600	96	148.70	149.70	132.70	4.60	73.90	73.80	13.40	60.40	13.40	13195	122.00
5	14351	598	96	144.00	151.00	133.20	5.40	73.30	73.90	13.70	60.20	13.80	13195	122.90
6	14321	597	96	151.20	146.20	132.20	1.60	73.80	73.80	13.40	60.40	13.50	13166	121.90
7	14326	597	96	150.90	145.90	132.00	1.60	74.30	74.00	13.50	60.50	13.60	13173	121.70
8	14323	597	96	148.50	145.50	131.60	1.60	74.60	74.40	13.50	60.90	13.60	13170	121.40
9	14319	597	96	147.20	146.20	132.20	1.70	74.60	74.30	13.70	60.60	13.80	13167	121.90
10	3875	161	96	159.00	159.00	36.20	110.50	74.80	74.50	14.20	60.30	14.30	3875	36.20
11	3681	153	96	166.30	162.30	34.30	110.80	75.10	74.90	14.50	60.40	14.50	3681	34.30
12	3642	152	96	178.60	177.60	34.50	130.70	75.30	75.10	15.40	59.70	15.50	3642	34.50
13	3719	155	96	164.90	172.90	35.20	125.40	74.40	74.70	15.10	59.60	15.20	3719	35.20
14	3755	156	96	170.00	174.00	35.60	126.00	74.10	74.20	15.10	59.10	15.10	3755	35.60
15	3728	155	96	185.50	176.50	35.40	128.70	75.10	74.50	15.20	59.30	15.20	3728	35.40
16	3741	156	96	190.80	190.80	35.90	142.40	75.00	74.80	15.90	58.90	16.00	3741	35.90
17	4840	202	96	204.70	207.70	47.60	147.80	74.80	74.70	16.90	57.80	16.90	4840	47.60
18	3882	162	96	195.80	190.80	37.30	141.10	75.20	74.80	15.80	59.00	15.90	3882	37.30
19				187.70	201.70	40.50	148.70	73.80	74.80	16.40	58.40	16.50		40.50
20				197.10	193.10	34.10	146.60	74.20	74.50	16.10	58.40	16.20		34.10
21				165.00	175.00	33.40	129.30	73.20	73.60	15.00	58.60	15.10		33.40
22				174.90	177.90	37.40	128.00	72.90	72.90	15.00	57.90	15.00		37.40
23				184.40	188.40	39.50	136.50	72.50	72.60	15.70	56.90	15.70		39.50
24				193.00	193.00	39.60	141.00	72.60	72.50	16.20	56.30	16.20		39.60
25				180.50	170.50	35.10	123.00	73.50	72.70	14.80	57.90	14.90		35.10
26
27
28
29
30

TOT	162733		1728
AVG	9041	377	96	168.47	168.91	70.72	85.62	74.11	74.07	14.69	59.38	14.76	8462	67.01

MAX	14395			204.70	207.70	133.20	148.70	75.30	75.10	16.90	61.30	16.90	13195	122.90
MIN	3642			129.60	139.60	33.40	1.40	72.50	72.50	12.60	56.30	12.80	3642	33.40