Nestled in Napa Valley, California, the picturesque Napa Valley Lake stands as a testament to the region's commitment to water resource management. Owned privately, this hydroelectric facility serves multiple purposes including irrigation and water supply, showcasing the versatility of its design. With a modest dam height of 40 feet and a storage capacity of 200 acre-feet, this Earth-type dam has been a vital asset to the community since its completion in 1990.

Situated in Aetna Springs, the Napa Valley Lake is regulated and inspected by the California Department of Water Resources, ensuring its safety and compliance with state regulations. With a low hazard potential and a satisfactory condition assessment, this dam remains a reliable source of water for the surrounding area. The dam's location on Tr Putah Creek further underscores its importance as a crucial infrastructure for water management in the region.

Boasting a surface area of 17 acres and a drainage area of 0.14 square miles, the Napa Valley Lake provides a serene backdrop to the lush vineyards and rolling hills of Napa County. With its efficient design and reliable operation, this hydroelectric facility continues to play a key role in sustaining the water resources and climate resilience of the Napa Valley region.