Bonneville Dam & Lake on Columbia River

September 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	10115	421	96	85.00	96.00	86.90	1.50	75.10	75.20	9.60	65.60	9.90	9114	78.60
2	10382	433	96	97.50	98.50	89.60	1.50	75.10	74.70	9.60	65.10	9.70	9345	80.90
3	10356	432	96	99.90	97.90	88.70	1.80	75.30	75.20	9.40	65.80	9.60	9327	80.20
4	10455	436	96	102.20	98.20	89.30	1.50	75.60	75.20	9.10	66.10	9.40	9348	80.20
5	10467	436	96	96.10	98.10	89.20	1.50	75.40	75.10	8.90	66.20	9.20	9418	80.50
6	10237	427	96	97.60	96.60	87.70	1.50	75.40	74.90	9.10	65.80	9.40	9105	78.30
7	9289	387	96	85.50	87.50	78.60	1.50	75.20	75.10	8.40	66.70	8.70	8237	70.00
8	8866	369	96	86.60	83.60	74.70	1.50	75.50	75.20	8.00	67.20	8.30	7791	65.90
9	9135	381	96	85.70	85.70	76.80	1.50	75.50	75.40	7.90	67.50	8.20	8138	68.70
10	9896	412	96	92.70	92.70	83.80	1.50	75.70	75.30	8.30	67.00	8.60	8841	75.20
11	9287	387	96	89.00	87.00	78.00	1.50	75.80	75.40	8.00	67.40	8.30	8197	69.20
12				81.80	79.80	70.90	1.50	76.00	75.80	7.30	68.50	7.60		62.40
13				75.80	78.80	69.70	1.70	75.60	75.70	7.20	68.50	7.50		61.30
14				72.80	72.80	63.90	1.50	75.60	75.40	7.10	68.30	7.20		59.70
15				85.20	85.20	76.30	1.60	75.70	75.50	8.20	67.30	8.20		74.50
16				81.10	83.10	74.10	1.50	75.50	75.40	8.40	67.00	8.40		74.10
17				76.20	76.20	67.30	1.50	75.50	75.10	7.80	67.30	7.90		67.30
18				85.60	83.60	75.50	0.70	75.60	75.40	8.20	67.20	8.30		73.20
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TOT	108485		1056
AVG	9862	411	96	87.57	87.85	78.94	1.49	75.51	75.28	8.36	66.92	8.58	8806	72.23

MAX	10467			102.20	98.50	89.60	1.80	76.00	75.80	9.60	68.50	9.90	9418	80.90
MIN	8866			72.80	72.80	63.90	0.70	75.10	74.70	7.10	65.10	7.20	7791	59.70