Tuck Lake Dam, located in Duvall, Washington, is a privately owned structure primarily used for recreation purposes. Completed in 1966, this earth dam sits on Tuck Creek and has a maximum storage capacity of 310 acre-feet, with a normal storage level of 170 acre-feet. The dam is 43 feet tall with a hydraulic height of 47 feet and spans a length of 250 feet, creating a surface area of 17 acres.

Managed by the Washington Department of Ecology, Tuck Lake Dam is subject to state regulation, inspection, and enforcement. Despite being classified as having a high hazard potential, the dam's condition assessment in 2020 deemed it to be in fair condition. The last inspection took place in October 2020, with a scheduled frequency of every 5 years. In case of emergencies, an Emergency Action Plan (EAP) may have been prepared, with the last revision dating back to July 2004.

Situated in King County, Washington, Tuck Lake Dam presents a significant water resource in the region, serving both recreational and regulatory purposes. Its association with Tuck Creek and proximity to the Seattle District underline its importance in the local ecosystem. As climate change continues to impact water resources, the maintenance and monitoring of structures like Tuck Lake Dam are essential to ensure the safety and sustainability of the surrounding environment.