Rock Island Dam & Reservoir

June 2026

Day of Month	Inflow kcfs	Total Outflow kcfs	Generation Flow kcfs	Spill kcfs	Midnight Reservoir Elevation	Average Forebay Elevation	Average Tailwater Elevation	Average Head feet
1	162.20	165.30	127.41	37.89	612.57	612.27	574.04	38.23
2	183.52	189.20	134.57	54.63	612.75	612.46	574.91	37.55
3	187.78	195.58	142.79	52.79	612.34	612.36	575.16	37.20
4	183.35	186.77	135.64	51.12	612.53	612.38	574.54	37.84
5	159.28	164.96	128.70	36.26	612.18	611.95	573.52	38.43
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TOT
AVG	175.23	180.36	133.82	46.54	612.47	612.28	574.43	37.85

MAX	187.78	195.58	142.79	54.63	612.75	612.46	575.16	38.43
MIN	159.28	164.96	127.41	36.26	612.18	611.95	573.52	37.20