Ridgewood, also known as Walker Lake, is a private water supply dam located in Mendocino County, California. Built in 1929, this earth dam stands at a height of 44 feet and has a maximum storage capacity of 185 acre-feet. The primary purpose of Ridgewood is to provide irrigation and water supply for the surrounding area, with Forsythe Creek serving as the primary source of water for the reservoir.

Managed by the California Department of Water Resources and regulated by the Safety of Dams agency, Ridgewood has been deemed to have a low hazard potential with a satisfactory condition assessment. Despite its age, the dam has undergone regular inspections, with the last one conducted in November 2019. With a drainage area of 5.7 square miles and a surface area of 32 acres, Ridgewood plays a crucial role in water resource management in the region.

Located in the city of Calpella, Ridgewood is an integral part of the water infrastructure in the area, ensuring a reliable water supply for irrigation and domestic use. With its history dating back almost a century, this dam continues to serve its purpose effectively while being monitored for safety and compliance with regulatory standards. For water resource and climate enthusiasts, Ridgewood stands as a testament to the importance of sustainable water management practices in the face of changing environmental conditions.