Austin Energy is preparing to replace the gates and anchors for the 60-year-old Decker Dam at Lake Walter E. Long. The utility, which works with the Austin Parks and Recreation Department in managing water levels, uses the water in Decker Lake in its operations at the nearby Decker Power Plant. It’s drafting specific requirements for the upgrade and expects the project to last from spring 2025 into 2027.
The dam and gates that shape Lake Walter E. Long were designed and installed in 1967. The upgrades will bring them up to current regulations and specifications with the goal of increasing safety and long-term protection of the equipment.
“Decker Dam has helped create a beloved natural space for decades and our focus is on making sure that it does so for generations to come,” Austin Energy’s Lisa Martin said.
Initial preparation for the project includes the gradual lowering of the lake level to 550 feet through natural evaporation, protecting the gates in place and creating optimum conditions for equipment upgrades. The lake will be kept at that level until work on the dam allows the gates to support a higher lake level and weather conditions allow that level to increase.
When lake levels reach 554 feet, the park’s boat ramps will close until work is completed. Lake access will remain available for shore-launched watercraft such as canoes and kayaks. Other park amenities, such as volleyball courts, picnic sites, grills, and walking trails, will also remain available during the project.