Leach Creek Detention Basin, located in Grand Junction, Colorado, is a crucial flood risk reduction structure designed by S. Bret Guillory and completed in 2015. With a dam height of 28 feet and a storage capacity of 667 acre-feet, this earth dam plays a vital role in mitigating potential flooding along Leach Creek. The basin covers a surface area of 32 acres and serves a drainage area of 7 square miles, with a maximum discharge capacity of 25,000 cubic feet per second.

Managed by the local government, Leach Creek Detention Basin is regulated by the Colorado Department of Water Resources and undergoes regular inspections to ensure its structural integrity and operational efficiency. Despite being classified with a high hazard potential, the basin is deemed to be in fair condition as of the last assessment in May 2018. It is equipped with an uncontrolled spillway with a width of 300 feet to manage excess water during flood events. Overall, this detention basin serves as a critical infrastructure in safeguarding the surrounding community from the impacts of flooding.