Located in Covina, California, Puddingstone, also known as Puddingstone Reservoir, is a local government-owned dam on Walnut Creek. Built in 1928 for flood risk reduction, this earth dam stands at a height of 147 feet and has a storage capacity of 16,342 acre-feet. With a surface area of 490 acres and a drainage area of 33.6 square miles, Puddingstone plays a crucial role in managing water resources in Los Angeles County.

Managed by the Department of Water Resources and regulated by the Safety of Dams agency, Puddingstone is subject to regular inspections and enforcement actions to ensure its structural integrity and safety. The dam has a high hazard potential but was found to be in satisfactory condition during the last assessment in September 2017. In case of emergencies, the dam is equipped with an Emergency Action Plan, although its last revision was in January 2018.

For water resource and climate enthusiasts, Puddingstone serves as a fascinating example of how infrastructure can effectively mitigate flood risks while providing essential water supply services. Its location, design, and operational history make it a valuable asset in the region's water management efforts, demonstrating the importance of proper regulation and maintenance for the safety of communities downstream.