Libby Dam & Lake Koocanusa

September 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	Midnight Storage kaf
1	4001	167	14	4.92	8.02	8.02	0.00	2445.65	2445.74	2119.51	326.23	4375.70
2	3683	153	14	5.25	7.02	7.02	0.00	2445.57	2445.61	2119.34	326.27	4372.20
3	3436	143	15	5.62	6.50	6.50	0.00	2445.53	2445.54	2119.19	326.35	4370.40
4	3431	143	15	5.39	6.50		0.00	2445.48	2445.50	2119.18	326.32	4368.20
5	3433	143	15	5.40	6.50	6.50	0.00	2445.43	2445.44	2119.18	326.26	4366.00
6	3432	143	14	5.83	6.50	6.50	0.00	2445.40	2445.41	2119.19	326.22	4364.70
7	3436	143	14	5.17	6.50	6.50	0.00	2445.34	2445.35	2119.19	326.16	4362.10
8	3434	143	15	6.50	6.50	6.50	0.00	2445.34	2445.36	2119.19	326.17	4362.10
9	3436	143	16	6.06	6.50	6.50	0.00	2445.32	2445.31	2119.10	326.21	4361.20
10	3432	143	15	6.06	6.50	6.50	0.00	2445.30	2445.28	2119.18	326.10	4360.30
11	3434	143	15	5.40	6.50	6.50	0.00	2445.25	2445.30	2119.17	326.13	4358.10
12	3434	143	15	5.61	6.50	6.50	0.00	2445.21	2445.22	2119.18	326.04	4356.40
13	3433	143	15	4.29	6.50	6.50	0.00	2445.11	2445.15	2119.19	325.96	4352.00
14	3432	143	16	4.73	6.50	6.50	0.00	2445.03	2445.07	2119.19	325.88	4348.50
15				6.72	6.50	6.50	0.00	2445.04	2445.07	2119.20	325.87	4348.90
16				4.95	6.50	6.50	0.00	2444.97	2445.03	2119.20	325.83	4345.90
17				6.06	6.50	6.50	0.00	2444.95	2444.98	2119.20	325.78	4345.00
18				5.40	6.50	6.50	0.00	2444.90	2444.93	2119.19	325.74	4342.80
19				4.73	6.50	6.50	0.00	2444.82	2444.88	2119.20	325.68	4339.30
20				4.96	6.50	6.50	0.00	2444.75	2444.81	2119.19	325.62	4336.20
21				5.09	6.44	6.44	0.00	2444.69	2444.73	2119.15	325.58	4333.60
22
23
24
25
26
27
28
29
30

TOT	48887		209
AVG	3492	145	15	5.44	6.59	6.60	0.00	2445.19	2445.22	2119.21	326.02	4355.70

MAX	4001			6.72	8.02	8.02	0.00	2445.65	2445.74	2119.51	326.35	4375.70
MIN	3431			4.29	6.44	6.44	0.00	2444.69	2444.73	2119.10	325.58	4333.60