East Park is a historic concrete dam located in Colusa County, California, specifically in the city of Elk Creek. Built in 1910 by the Bureau of Reclamation, this dam is primarily used for irrigation purposes, with a storage capacity of 54,300 acre-feet and a surface area of 1,820 acres. The dam stands at a height of 139 feet and has a spillway width of 414 feet, allowing for a maximum discharge of 9,200 cubic feet per second.

Managed by the Bureau of Reclamation, East Park is situated on the Little Stony Creek and serves as a vital water resource for the region. Along with irrigation, the dam also supports recreational activities and provides water supply to the surrounding areas. Despite its high hazard potential, the dam is regularly inspected by the Bureau of Reclamation to ensure its safety and functionality, with the last inspection conducted in June 2020. The risk assessment for East Park is moderate, indicating a level 3 risk rating.

Enthusiasts of water resources and climate in California will find East Park to be a fascinating engineering marvel that plays a crucial role in water management in the region. With its long history dating back over a century, this concrete dam continues to serve as a key infrastructure for irrigation and water supply, highlighting the importance of sustainable water resource management in the face of changing climate conditions. As a significant feature on the landscape of Colusa County, East Park stands as a testament to the ingenuity and foresight of early water resource developers in California.