Haymes Storage, located in Fountain, Colorado, is a federally-owned dam managed by the US Army primarily for recreational purposes. Built in 1887, this earth dam on Rock Creek stands at 20 feet high with a storage capacity of 160 acre-feet. Despite its age, the dam has a low hazard potential and a moderate risk assessment rating, indicating a stable and well-maintained structure.

With a spillway width of 1 foot and uncontrolled spillway type, Haymes Storage is designed to handle overflow efficiently. The dam's condition assessment is currently not available, but it undergoes inspections every four years to ensure safety and reliability. Although the drainage area is listed as zero, the reservoir provides fire protection, stock watering, and small fish pond functions in addition to its recreational use.

Overall, Haymes Storage serves as a vital water resource in El Paso County, providing essential services while also offering a picturesque recreational area for visitors to enjoy. Its historical significance, combined with its modern maintenance practices, showcases a commitment to preserving and utilizing water resources in a sustainable and responsible manner.