Rock Island Dam & Reservoir

December 2025

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	92.51	95.21	95.21	0.00	612.11	612.10	570.36	41.74
2	89.82	92.87	92.87	0.00	612.15	612.13	570.07	42.06
3	90.63	94.32	94.32	0.00	611.40	611.84	569.40	42.44
4	104.87	105.95	105.95	0.00	611.93	611.85	569.98	41.87
5	126.66	132.80	132.80	0.00	612.10	611.95	572.14	39.81
6	108.52	112.88	112.88	0.00	611.74	611.84	571.32	40.52
7	99.42	102.23	102.23	0.00	612.13	612.11	570.06	42.05
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TOT
AVG	101.78	105.18	105.18	0.00	611.94	611.97	570.48	41.50

MAX	126.66	132.80	132.80	0.00	612.15	612.13	572.14	42.44
MIN	89.82	92.87	92.87	0.00	611.40	611.84	569.40	39.81