Lawrence Lake Dam, located in Thurston, Washington, is a privately owned earth dam primarily used for recreation purposes. Completed in 1918, this structure stands at a hydraulic height of 30 feet and a length of 120 feet, providing storage for up to 5,000 acre-feet of water from the Tr-Deschutes River. With a surface area of 330 acres and a drainage area of 3.35 square miles, this dam plays a crucial role in regulating water flow and providing recreational opportunities in the Vail area.

Managed by the Washington Department of Ecology, Lawrence Lake Dam has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. While the dam has not been inspected in recent years, it is regulated, permitted, and inspected by the state authorities, ensuring its safety and compliance with regulations. Despite its age, Lawrence Lake Dam continues to serve as a vital resource for water storage and outdoor recreation in the region.

Overall, Lawrence Lake Dam is a significant earth dam with a rich history dating back to the early 20th century. As a key feature of the landscape in Thurston County, this dam provides essential water storage capacity for recreational activities while being closely monitored and regulated by state authorities. With its unique design and strategic location along the Tr-Deschutes River, Lawrence Lake Dam remains a valuable asset for water resource and climate enthusiasts in the Pacific Northwest.