Adelaide is a privately owned irrigation dam located in Shell, Wyoming, along the Adelaide Creek. Built in 1990 and designed by Richard L. Volpe, the Earth-type dam stands at 74 feet high with a hydraulic height of 67 feet and a length of 805 feet. With a storage capacity of 5,835 acre-feet and serving purposes such as fish and wildlife ponds, Adelaide plays a crucial role in the local water resource management.

Maintained by the Wyoming State Engineer's Office, Adelaide's spillway is uncontrolled with a width of 18 feet, and it has a high hazard potential due to its location and design. The dam's last inspection in July 2020 rated its condition as moderate, with regular inspections every 5 years to ensure its safety and functionality. Despite its associated risks, Adelaide continues to support irrigation activities and contribute to the water supply in the region.

As part of the broader water infrastructure in Big Horn County, Wyoming, Adelaide serves as a key asset for water management in the area. With its strategic location and design, the dam provides essential services for agricultural irrigation while also supporting fish and wildlife habitats. As climate change impacts water resources, the maintenance and monitoring of structures like Adelaide become increasingly important to ensure water security and resilience in the face of evolving environmental challenges.