Saint Marys Lake is a lake in Saint Mary's County, Maryland. Its current pool elevation is about 59 ft (USGS gauge 01661499, 2026-07-03 00:05). We never estimate missing readings — a “—” means no current source.
Full conditions, things to do, and where to stay, eat, and rent on the Saint Marys Lake guide. More: boat rentals · cabins & rentals · fishing · things to do.