The Burdekin Falls Dam, also known as the Burdekin Dam, is a concrete gravity dam with an uncontrolled spillway across the Burdekin River in the Whitsunday Region, Queensland, Australia. Built for the purpose of irrigation, the reservoir is called Lake Dalrymple, and is on the boundary of the Whitsunday Region and the Charters Towers Region. Burdekin F…The Burdekin Falls Dam, also known as the Burdekin Dam, is a concrete gravity dam with an uncontrolled spillway across the Burdekin River in the Whitsunday Region, Queensland, Australia. Built for the purpose of irrigation, the reservoir is called Lake Dalrymple, and is on the boundary of the Whitsunday Region and the Charters Towers Region. Burdekin Falls Dam is managed by SunWater. Water from the reservoir is also used to replenish downstream aquifers.