Olsen Chas L is a privately owned dam located in Kay, Oklahoma, along the Myers Creek. Completed in 1940, this Earth type dam stands at a height of 35 feet and has a storage capacity of 75 acre-feet. With a low hazard potential and a very high risk assessment rating, the dam is regulated by the Oklahoma Water Resources Board and undergoes regular inspections, with the last one conducted in May 2011.

The dam features a controlled spillway and a single valve outlet gate. While it is primarily used for purposes other than flood control or water supply, Olsen Chas L plays a crucial role in managing water resources in the area. The dam has a surface area of 3 acres and serves as an important structure within the Tulsa District of Oklahoma.

Despite its age, Olsen Chas L remains in good condition and has not been rated for its current state. With its strategic location and key role in water management, this dam is a significant asset for both the local community and the broader region, contributing to the overall resilience of the water resource infrastructure in Oklahoma.