Douglas is a privately owned dam located in Larimer, Colorado, with a primary purpose of irrigation. Completed in 1901, this earthen dam stands at a height of 39 feet and has a hydraulic height of 47 feet, providing storage of up to 13,324 acre-feet of water from Dry Creek. With a surface area of 565 acres and a drainage area of 43 square miles, Douglas plays a crucial role in supporting fish and wildlife ponds in addition to its irrigation function.

Managed by the Colorado Division of Water Resources (DWR), Douglas is regulated and inspected by state authorities to ensure its safety and compliance with standards. The dam has a spillway width of 642 feet, and its high hazard potential is mitigated by satisfactory condition assessments. Although classified as having a moderate risk level, Douglas has not been modified in recent years and is equipped to handle a maximum discharge of 39,750 cubic feet per second, making it a key component of water resource management in the region.

Located just 8 miles from Fort Collins, Douglas serves as a vital water infrastructure in the area, contributing to the resilience of the local ecosystem and agricultural activities. With its historical significance dating back over a century, this dam continues to play a crucial role in water storage, irrigation, and wildlife habitat enhancement along Dry Creek. For water resource and climate enthusiasts, Douglas represents a blend of engineering ingenuity and environmental stewardship in the management of vital water resources in Colorado.