Aspaas is a hydroelectric dam located in La Plata, Colorado, with a primary purpose of generating hydroelectric power. Built in 1980 by designer W.W. Wheeler, this earth dam stands at a height of 27 feet and has a storage capacity of 40 acre-feet. Situated on the Little Cascade Creek in Hermosa, the dam serves as a vital water resource in the area, with a normal storage capacity of 24 acre-feet and a surface area of 4 acres.

Managed by the Federal Energy Regulatory Commission, Aspaas is regulated by the state with inspections and enforcement carried out to ensure its safety and compliance. Despite being classified as having a low hazard potential, the dam is subject to a high risk assessment due to its proximity to residential areas. While the condition assessment is currently not available, emergency action plans have been prepared and updated to meet guidelines, with the last revision in December 2020.

For water resource and climate enthusiasts, Aspaas presents an intriguing case study of a hydroelectric facility in a mountainous region. With its location in a picturesque setting and its role in renewable energy generation, Aspaas showcases the intersection of water management, energy production, and environmental stewardship. As efforts continue to monitor and improve the safety of the dam, it remains a symbol of sustainable water resource utilization in Colorado.