Rock Island Dam & Reservoir

January 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
1	9497	396	0	135.38	139.37	139.37	0.00	612.40	612.07	571.71	40.36
2	9602	400	0	143.14	146.90	146.03	0.88	612.19	611.95	572.88	39.07
3	9488	395	0	136.02	142.20	142.20	0.00	612.03	612.03	572.64	39.39
4	8420	351	0	119.72	125.76	125.76	0.00	612.17	611.94	572.25	39.69
5	8910	371	0	126.37	130.59	130.59	0.00	611.99	612.02	571.26	40.76
6	9979	416	0	150.90	154.46	154.46	0.00	612.62	612.04	573.46	38.58
7	10174	424	0	157.06	163.82	163.82	0.00	612.37	611.88	574.57	37.31
8	10044	418	0	153.91	160.72	160.72	0.00	612.31	611.94	574.49	37.45
9	9686	404	0	144.08	150.25	150.25	0.00	612.29	611.72	573.58	38.14
10	9789	408	0	144.10	150.87	150.87	0.00	611.57	611.81	573.47	38.34
11	9602	400	0	146.40	151.30	151.30	0.00	611.88	611.84	574.13	37.71
12	9825	409	0	151.27	156.58	156.30	0.28	611.86	611.91	574.39	37.52
13	9810	409	0	153.07	159.07	159.07	0.00	611.53	611.35	574.42	36.93
14	9651	402	0	146.47	151.28	151.28	0.00	612.31	612.16	574.08	38.08
15	9832	410	0	159.01	163.70	156.92	6.77	612.14	612.21	574.60	37.61
16	10195	425	0	160.95	167.36	163.35	4.01	611.41	611.93	574.26	37.67
17	9977	416	0	156.31	162.15	162.15	0.00	612.27	611.38	574.36	37.02
18	10280	428	0	158.47	164.15	164.15	0.00	612.53	612.18	574.49	37.69
19	10289	429	0	158.76	165.73	165.13	0.61	612.38	612.06	574.55	37.51
20	9961	415	0	152.45	160.31	160.31	0.00	611.72	611.67	574.43	37.24
21				154.90	161.02	161.02	0.00	612.22	611.81	574.54	37.27
22				142.29	149.38	149.38	0.00	612.29	611.51	574.00	37.51
23				140.67	144.92	144.92	0.00	612.02	611.67	573.34	38.33
24				148.54	153.23	152.16	1.06	612.33	611.92	574.03	37.89
25				150.97	155.41	154.47	0.94	612.34	612.03	574.28	37.75
26				152.55	155.35	149.08	6.27	612.64	612.23	573.69	38.54
27				145.71	150.57	143.55	7.01	612.12	611.90	572.64	39.26
28
29
30
31

TOT	195011		0
AVG	9751	406	0	147.76	153.20	152.17	1.03	612.15	611.89	573.72	38.17

MAX	10289			160.95	167.36	165.13	7.01	612.64	612.23	574.60	40.76
MIN	8420			119.72	125.76	125.76	0.00	611.41	611.35	571.26	36.93