Dam No 1, also known as Lake of The Forest Dam, is a private-owned structure located in Wyandotte County, Kansas. Completed in 1940, this earth-type dam stands at a height of 20 feet and spans 620 feet in length, with a primary purpose of providing recreational opportunities. Situated on the East Mission Creek, it offers a surface area of 24.8 acres and a normal storage capacity of 160 acre-feet.

Despite its recreational value, Dam No 1 poses a high hazard potential with a poor condition assessment. The spillway type is uncontrolled with a width of 200 feet, and the maximum discharge capacity reaches 1,095 cubic feet per second. The dam's risk assessment is moderate (3), and it undergoes inspections every three years to ensure public safety. The state of Kansas Department of Agriculture regulates and enforces compliance with state jurisdiction laws.

As a significant feature in the local landscape, Dam No 1 serves as both a recreational hub and a crucial water resource management component. With its high hazard potential and moderate risk assessment, ongoing inspections and maintenance are essential to safeguard the surrounding community and ensure the dam's structural integrity for years to come.