Westlake Reservoir, located in Thousand Oaks, California, is a vital water resource managed by a public utility. The reservoir, completed in 1972, serves the primary purpose of supplying water for irrigation and domestic use in the region. With a height of 158 feet and a storage capacity of 9200 acre-feet, Westlake Reservoir plays a crucial role in meeting the water demands of the community.

Managed by the California state regulatory agency, the Safety of Dams division ensures that Westlake Reservoir meets all safety and inspection requirements. The dam, classified as an Earth type, has a high hazard potential but is currently deemed to be in satisfactory condition. Regular inspections and maintenance activities help to mitigate any potential risks and ensure the continued reliability of the reservoir for water supply purposes.

Westlake Reservoir, situated on Tree Springs Creek, not only provides essential water storage capabilities but also contributes to the overall water management strategy in Los Angeles County. With its strategic location and significant storage capacity, the reservoir serves as a critical component in the regional water supply infrastructure, supporting agricultural, industrial, and residential water needs.