Located in Thornton, Colorado, Lambertson Lakes No. 3 is a recreational dam that was completed in 1950. With a height of 27 feet and a storage capacity of 86 acre-feet, this earth dam serves the primary purpose of providing recreational opportunities for the local community. The dam has a low hazard potential and is currently in satisfactory condition, as assessed in April 2019.

Managed by the local government, Lambertson Lakes No. 3 is regulated and permitted by the Colorado Department of Water Resources. It is situated in Adams County and falls under the jurisdiction of the state. Despite its high risk assessment rating (2), the dam has not undergone any recent modifications and is inspected every six years to ensure its safety and functionality. With a surface area of 6 acres and a maximum discharge capacity of 2,223 cubic feet per second, this dam plays a crucial role in water resource management in the area.

Water resource and climate enthusiasts will appreciate Lambertson Lakes No. 3 for its contribution to recreational activities and its role in storing water for the community. The dam's location, design, and functionality make it a key landmark in Thornton, Colorado. As a regulated structure with a focus on public safety, Lambertson Lakes No. 3 showcases the intersection of environmental conservation, water management, and outdoor recreation in a dynamic and evolving ecosystem.