Lone Tree, located in Larimer County, Colorado, is a privately owned water reservoir known also as Home Supply Reservoir. With a history dating back to 1882, this Earth dam structure stands at a height of 29 feet, holding a storage capacity of 10,973 acre-feet to support irrigation in the region. The reservoir serves multiple purposes including fish and wildlife habitat, recreation, and irrigation, making it a vital resource for the local community.

Managed by the Colorado Division of Water Resources, Lone Tree is regulated and inspected regularly to ensure its structural integrity and compliance with state standards. With a spillway width of 900 feet and a significant hazard potential, the reservoir has a moderate risk rating and a satisfactory condition assessment as of the last inspection in July 2019. Despite its age, Lone Tree continues to play a crucial role in water resource management, providing essential support for agriculture and conservation efforts in the area.

Located along the Big Thompson River, Lone Tree not only serves as a water source but also contributes to the natural ecosystem and recreational opportunities in the region. With its historical significance and ongoing maintenance efforts, this reservoir remains a key asset for water supply and climate resilience in Larimer County, showcasing the importance of sustainable water management practices for the future.