Vallecito Reservoir, located in La Plata County, Colorado, is a federal-owned structure managed by the Bureau of Reclamation. Completed in 1940, this Earth dam stands at a height of 162 feet, with a primary purpose of serving as a Fish and Wildlife Pond. With a storage capacity of 136,200 acre-feet, it plays a crucial role in supporting various functions including hydroelectric power generation, irrigation, and recreation.

The reservoir, situated along the Los Pinos River, covers a surface area of 2,803 acres and has a drainage area of 255 square miles. While it does not have a spillway, it is equipped with outlet gates for water management. Vallecito Reservoir is subject to regular state inspections, enforcement, and permitting, ensuring its safety and compliance with regulations. Its hazard potential is rated as high, emphasizing the importance of effective risk management strategies.

Vallecito Reservoir serves as a vital water resource for the region, offering a balance between conservation efforts and recreational opportunities. Its strategic location and design make it a significant asset for fish and wildlife habitat, as well as for the local community's water needs. With its rich history and ongoing management by the Bureau of Reclamation, Vallecito stands as a testament to sustainable water resource management in the face of changing climate conditions.