Francis is a privately owned irrigation dam located in Hill City, Idaho. Built in 1914, it serves the primary purpose of irrigation for the surrounding area, with a storage capacity of 330 acre-feet and a drainage area of 3.6 square miles. The dam stands at a height of 32.5 feet, with a hydraulic height of 27 feet, and a length of 390 feet.

The dam, constructed with earth and stone core types on rock and soil foundations, poses a significant hazard potential but has been assessed to be in fair condition as of June 2020. Its spillway type is uncontrolled with a width of 8 feet, and it has an outlet gate in the form of a slide (sluice gate). The dam has a moderate risk assessment rating of 3, indicating a need for ongoing risk management and monitoring.

Francis is regulated and inspected by the Idaho Department of Water Resources, with state permitting, inspection, and enforcement measures in place. Its location near Negro Creek and Camas Creek in Elmore County makes it a crucial part of the local water resource infrastructure. With its long history and vital role in irrigation, Francis stands as a testament to the importance of water management in the face of changing climate conditions.