Lake Joanna
Western part of lake
Lake Joanna Show map of Florida Lake Joanna Show map of the United States
Location	Lake County, Florida
Coordinates	28°50′30″N 81°38′43″W / 28.84167°N 81.64528°W / 28.84167; -81.64528
Basin countries	United States
Max. length	1.7 km (1.1 mi)
Max. width	0.9 km (0.56 mi)
Surface area	135.46 ha (334.7 acres)

Lake Joanna is a spring-fed lake in Lake County, Florida. It occupies an area of 334.74 acres.^[1]