Langtry is a privately owned dam located in Aetna Springs, California, along the Tr Cassidy Creek. Completed in 1992, this earth-type dam stands at 50 feet high and spans 450 feet in length, providing water supply primarily for irrigation purposes. With a storage capacity of 525 acre-feet and a surface area of 34 acres, Langtry plays a crucial role in water management in the region.

Managed by the California Department of Water Resources under the Safety of Dams program, Langtry is subject to regular inspections and enforcement to ensure its structural integrity and safe operation. The dam has been assessed to have a low hazard potential and is currently in satisfactory condition as of the last assessment in September 2017. Its location in Lake County, California, within the San Francisco District of the US Army Corps of Engineers, further highlights its importance in the local water resource infrastructure.

Enthusiasts of water resources and climate in California will find Langtry to be a significant structure contributing to the irrigation and water supply needs of the region. With its strategic location along Tr Cassidy Creek and its state-regulated status, Langtry serves as a vital component in the management of water resources in Lake County. Its low hazard potential and satisfactory condition ensure that it continues to support agricultural and environmental needs in a sustainable manner.