Located in Pearl City, Illinois, the Pearl City Lagoon Dam is a local government-owned structure that serves as a crucial water resource for the area. Completed in 1970, this earth dam stands at a height of 11 feet and has a length of 1700 feet, providing a maximum storage capacity of 16 acre-feet. The dam is regulated by the Illinois Department of Natural Resources (IDNR) and undergoes regular inspections to ensure its safety and functionality.

The primary purpose of the Pearl City Lagoon Dam is classified as "Other", with a spillway type of "Uncontrolled". The dam poses a significant hazard potential and is rated as having a moderate risk level. While the condition assessment is currently listed as "Not Available", the dam is subject to inspection every three years to monitor its structural integrity. In case of emergencies, an Emergency Action Plan (EAP) may be implemented, although details on its preparation and guidelines adherence are not provided in the data.

With its location along the Yellow Creek offstream, the Pearl City Lagoon Dam plays a crucial role in managing water resources in Stephenson County, Illinois. Climate and water resource enthusiasts can appreciate this structure as a key component of the local ecosystem, supporting water storage and management efforts in the region.