Located in Kremmling, Colorado, the Lewis dam is a private-owned structure primarily used for irrigation purposes. Built in 2006, the dam stands at 18 feet tall with a storage capacity of 97 acre-feet. The dam is situated on Pinto Creek-TR, with a maximum discharge of 142 cubic feet per second and a surface area of 9 acres. Despite its relatively low hazard potential and fair condition assessment, the dam is regulated by the Colorado Division of Water Resources, which ensures regular inspections and enforcement to maintain safety standards.

Designed by Steve Steffens, the Lewis dam is an earth-fill structure with a stone core and soil foundation. Its spillway type is uncontrolled, with a width of 22 feet. The dam has no associated locks but features uncontrolled outlet gates. The last inspection in October 2019 deemed the dam to be in fair condition, with a moderate risk assessment rating. Emergency action plans and inundation maps have not been prepared for the dam, highlighting potential areas for improvement in risk management and emergency response protocols.

With its strategic location and critical role in irrigation, the Lewis dam serves as a vital water resource in Grand County, Colorado. As climate change continues to impact water availability and management, ensuring the safety and resilience of structures like the Lewis dam is crucial for sustainable water use and environmental protection in the region.