Lake Arrowhead, located in the picturesque city of Lake Arrowhead, California, is a private water resource managed by the state's Department of Water Resources (DWR) under the Safety of Dams program. This stunning reservoir, completed in 1922, serves multiple purposes including hydroelectric power generation, irrigation, recreation, and water supply. With a dam height of 190 feet and a storage capacity of 48,000 acre-feet, Lake Arrowhead covers a surface area of 780 acres and drains a catchment area of 6.85 square miles through the Little Bear Creek.

Managed by the Los Angeles District of the US Army Corps of Engineers, Lake Arrowhead's dam has a significant hazard potential but is currently in satisfactory condition according to the last assessment in September 2017. The dam's Emergency Action Plan (EAP) was last revised in July 2014, and regular inspections are conducted to ensure the safety and integrity of the structure. With its serene surroundings and vital role in water supply management, Lake Arrowhead stands as a symbol of sustainable resource utilization and climate resilience in the region.

Water and climate enthusiasts can appreciate Lake Arrowhead not only for its engineering marvel but also for its contribution to the local ecosystem and community. As a popular recreational destination and key water source for the area, this private reservoir exemplifies the delicate balance between human needs and environmental stewardship. With its rich history dating back to the early 20th century, Lake Arrowhead continues to be a beacon of water resource management excellence in California, showcasing the importance of sustainable infrastructure development in the face of changing climate patterns.