Gold Gulch 1a is a privately owned rockfill dam located in Gila, Arizona, designed for flood risk reduction along the Gold Gulch stream. Completed in 1995, this impressive structure stands at a height of 106 feet and spans a length of 855 feet, with a storage capacity of 110 acre-feet. The dam's primary purpose is flood risk reduction, with a spillway width of 30 feet and a significant hazard potential.

Managed by the Arizona Department of Water Resources, Gold Gulch 1a has been inspected regularly, with the last assessment in April 2018 rating its condition as satisfactory. The dam's risk assessment is moderate, with a designated emergency action plan in place to address any potential hazards. Positioned within the picturesque Roosevelt Lake Estates, this dam serves as a crucial safeguard against flooding in the region, showcasing the importance of water resource management in the face of a changing climate.