Lake Istokpoga is a 26,762.9-acre (108.306 km²) freshwater lake in Highlands County, Florida. It is fed by two creeks, Arbuckle Creek and Josephine Creek. The oblong-shaped lake is approximately 5 miles (8.0 km) wide by 10 miles (16 km) long. It is considered the fifth largest lake in the state of Florida. Despite its area, it is very shallow, with an average depth of only 4 feet (1.2 m). Maximum depth is 10 feet (3.0 m). As a result, boaters must be cautious to not become stranded in muck near the shore line. Bass and Pontoon boats are the most commonly used watercraft, with some use of air boats.