Geist Reservoir is a lake in Marion County, Indiana. Its current pool elevation is about 785 ft (USGS gauge 03351700, 2026-08-11 17:45). We never estimate missing readings — a “—” means no current source.
Full conditions, things to do, and where to stay, eat, and rent on the Geist Reservoir guide. More: boat rentals · cabins & rentals · fishing · things to do.