Mine Number 21 Reservoir is a lake in Franklin County, Illinois. A live elevation reading isn't published through a USGS gauge here; check the operator for the current level. We never estimate missing readings — a “—” means no current source.
Full conditions, things to do, and where to stay, eat, and rent on the Mine Number 21 Reservoir guide. More: boat rentals · cabins & rentals · fishing · things to do.