Lake Lemon is a reservoir located in southern Indiana approximately 10 miles (16 km) northeast of Bloomington, Indiana. It is bounded by private and public property in Monroe County and Brown County, with the eastern end of the lake in Brown County. The surface area of the lake is 1,650 acres (670 ha), making it the 11th largest lake in Indiana. There are 24 miles (39 km) of shoreline. The lake has an average depth of 9.7 feet (3.0 m) at full pool level.