Mountain Supply #10, also known as North Poudre Reservoir #10, is a private irrigation structure located in Larimer County, Colorado. Built in 1974 by the USDA NRCS, this earth dam stands at a height of 22 feet and has a storage capacity of 656 acre-feet. Situated on the North Fork Cache la Poudre River, this reservoir serves as a vital water supply for agricultural purposes in the region.

The dam's spillway, with a width of 110 feet, is uncontrolled, and the overall hazard potential is rated as low, with a satisfactory condition assessment as of August 2019. The structure is regulated by the Colorado Division of Water Resources, with regular inspections and enforcement measures in place to ensure its safety and functionality. Despite its low hazard potential, a moderate risk assessment rating suggests that there are potential risks that need to be managed effectively.

With its strategic location and critical role in supporting irrigation activities, Mountain Supply #10 serves as a crucial water resource in the area. Its design and construction by the USDA NRCS, along with state regulatory oversight, highlight the importance of proper water infrastructure management in addressing the challenges posed by climate change and maintaining sustainable water supplies for the future.