Rock Island Dam

Thursday May 21, 2026

Hour	Total Outflow kcfs	Generation Flow kcfs	Spill kcfs	Forebay Elevation	Tailwater Elevation	Average Head
1	164.80	148.10	16.70	612.37	573.89	38.48
2	164.30	148.30	16.00	611.81	574.06	37.75
3	138.40	122.30	16.10	612.52	572.76	39.76
4	154.20	138.10	16.10	612.12	573.94	38.18
5	159.20	145.30	13.90	612.70	573.45	39.25
6	163.70	136.20	27.50	612.64	573.95	38.69
7	171.30	137.50	33.80	612.71	574.43	38.28
8	197.30	144.60	52.70	612.18	575.05	37.13
9	191.90	145.50	46.40	612.24	574.67	37.57
10	167.70	139.00	28.70	612.53	573.92	38.61
11	151.90	136.50	15.40	612.37	573.24	39.13
12	131.00	119.00	12.00	612.04	572.87	39.17
13	121.80	108.20	13.60	611.94	572.62	39.32
14	130.80	109.90	20.90	611.75	572.49	39.26
15	108.50	94.80	13.70	612.31	571.89	40.42
16	115.30	101.40	13.90	612.21	572.30	39.91
17	120.20	106.50	13.70	612.01	572.32	39.69
18	132.10	118.60	13.50	611.99	572.89	39.10
19	154.50	140.80	13.70	612.22	573.41	38.81
20	158.90	144.80	14.10	612.48	573.67	38.81
21	164.90	148.30	16.60	612.59	573.62	38.97
22	165.50	148.70	16.80	612.68	573.73	38.95
23	165.30	148.60	16.70	612.59	573.70	38.89
24	164.90	148.30	16.60	612.53	573.72	38.81

AVG	152.43	132.47	19.96	612.31	573.44	38.87

MAX	197.30	148.70	52.70	612.71	575.05	40.42
MIN	108.50	94.80	12.00	611.75	571.89	37.13