Located in Logan County, Colorado, the Jumbo dam, also known as Little Jumbo, serves as a vital fish and wildlife pond. Completed in 1977, this earth dam stands at a structural height of 38 feet with a hydraulic height of 21 feet. With a storage capacity of 1450 acre-feet, the dam covers a surface area of 100 acres and has a maximum discharge rate of 350 cubic feet per second. The dam's spillway type is uncontrolled, with a spillway width of 15 feet, ensuring the safety and maintenance of the structure.

Managed by the State regulatory agency, the Department of Water Resources (DWR), Jumbo is inspected regularly, with a hazard potential rated as low and a fair condition assessment as of October 2020. The dam poses a moderate risk (3) and has an inspection frequency of 6 times a year. With its location along the South Platte River, Jumbo is a vital resource for the surrounding ecosystem and plays a crucial role in water resource management in the region. For water resource and climate enthusiasts, the Jumbo dam stands as a testament to sustainable infrastructure and environmental stewardship in Colorado.