Hestan Vineyards Dam, located in Napa, California, is a privately owned structure primarily used for water supply purposes, including irrigation. This earth dam stands at a height of 20.8 feet with a storage capacity of 146 acre-feet. Despite its modest size, the dam has a significant hazard potential and has been assessed to be in fair condition as of September 2017.

Managed by the California Department of Water Resources, Safety of Dams division, Hestan Vineyards Dam is regulated, permitted, and inspected by the state authorities to ensure its safety and compliance with regulations. The dam is situated in the San Francisco District and falls under the jurisdiction of Congressman Mike Thompson. The last inspection of the dam took place in November 2020, with a scheduled inspection frequency of once per year.

With its picturesque location and crucial role in providing water for agricultural purposes, Hestan Vineyards Dam serves as a vital water resource infrastructure in the region. Climate and water resource enthusiasts can appreciate the engineering behind this earth dam and the careful monitoring and maintenance efforts undertaken to safeguard its integrity and functionality.