Lake Isis is a 53-acre (210,000 m2) rectangular lake in the northern part of Avon Park, Florida. It has very clear water. The lake is surrounded by white-sand beaches. The lake is a natural freshwater lake. There is no public access to the lake, as all the property surrounding it is privately owned. Houses surround the west, north and east sides. The property along the entire south side is owned by Avon Park Holiness Camp, opened in 1939.