La Jara - Dam No. 1, also known as La Jara - Main Dam, is a state-owned structure located in Conejos County, Colorado, along the La Jara Creek. Completed in 1906, this earth dam stands at a height of 48 feet and has a hydraulic height of 48 feet, with a structural height of 54 feet. The dam serves multiple purposes including fish and wildlife pond, irrigation, and recreation, with a primary focus on recreation.

With a storage capacity of 14,055 acre-feet and a surface area of 1,241 acres, La Jara - Dam No. 1 provides essential water resources for the surrounding area. The dam features an uncontrolled spillway type with a width of 40 feet and two slide (sluice gate) outlet gates. Despite being assessed as in fair condition as of June 2019, the dam is categorized with a significant hazard potential and a moderate risk level, indicating the need for ongoing monitoring and management to ensure its safety and effectiveness in water resource management.

For water resource and climate enthusiasts, La Jara - Dam No. 1 presents an intriguing case study of a historic state-owned dam in Colorado that plays a vital role in providing water for irrigation, fish and wildlife habitats, and recreational activities. The dam's location on the La Jara Creek and its significant storage capacity highlight its importance in water management within the region. Ongoing inspections and risk assessments are crucial to maintain the dam's integrity and safeguard against potential hazards, underscoring the importance of sustainable water resource practices in the face of changing climate conditions.