Spring Valley, located in Rumsey, California, is a picturesque reservoir on Wolf Creek that serves as a vital water supply for the local community. Built in 1968, this earth dam stands at a height of 37 feet and has a storage capacity of 325 acre-feet. With a surface area of 23 acres and a drainage area of 19 square miles, Spring Valley plays a crucial role in meeting the water needs of the region.

Managed by the local government and regulated by the California Department of Water Resources (DWR), Spring Valley is subject to regular inspections and enforcement to ensure its safety and reliability. Despite being categorized with a high hazard potential, the dam's condition assessment in 2017 deemed it satisfactory. The dam also offers recreational opportunities in addition to its primary purpose of water supply, making it a valuable asset for both residents and visitors alike.

With its tranquil setting and important role in water management, Spring Valley is a significant feature in Lake County, California. As climate change continues to impact water resources, the maintenance and monitoring of structures like Spring Valley become increasingly crucial in ensuring the sustainability of water supplies for future generations. As enthusiasts of water resources and climate, Spring Valley provides a fascinating case study of how infrastructure can both support communities and respond to environmental challenges.