Hannah, a privately-owned irrigation dam located in Campbell, Wyoming, serves multiple purposes including fire protection, stock, small fish ponds, and irrigation. Built in 2007, this earth dam stands at a height of 30 feet with a hydraulic height of 25 feet and a structural height of 40 feet. With a storage capacity of 142 acre-feet and a surface area of 9.25 acres, Hannah plays a crucial role in water resource management in the region.

Situated on Burnt Station Draw, Hannah has a low hazard potential and is deemed to be in fair condition as of the last assessment in September 2018. The dam features an uncontrolled spillway with a width of 30 feet and an outlet gate consisting of a single valve. Although the risk assessment indicates a moderate level of risk, the dam has not yet had an Emergency Action Plan (EAP) prepared or updated, raising concerns about emergency preparedness in the event of a breach or failure.

Managed by the private owner and designed by Hugh Lowham, Hannah undergoes inspections every 5 years to ensure its continued safety and functionality. With Liz Cheney representing the Congressional District in which it is located, this crucial water infrastructure serves as a vital component of the local water supply system, highlighting the intersection of water resources, climate, and infrastructure management in the region.