Dorchester 2-A is a vital flood risk reduction structure located in Crete, Nebraska along the TR-W FK Big Blue River. Built in 1966 and designed by the USDA NRCS, this earth dam stands at a height of 31 feet and has a structural height of 36 feet. With a storage capacity of 558 acre-feet and a drainage area of 1.8 square miles, Dorchester 2-A plays a crucial role in protecting the surrounding area from potential flooding events.

Managed by the Nebraska Department of Natural Resources, Dorchester 2-A has a significant hazard potential but was assessed to be in satisfactory condition during its last inspection in April 2016. The dam has a normal storage capacity of 125 acre-feet and a maximum discharge of 706 cubic feet per second. Despite its age, Dorchester 2-A continues to serve its primary purpose of flood risk reduction effectively and is regulated, permitted, inspected, and enforced by the state to ensure its proper functioning and safety.

As a key part of the flood control infrastructure in Saline County, Nebraska, Dorchester 2-A exemplifies the importance of proactive water resource management in the face of changing climate conditions. Its role in mitigating flood risks and protecting communities downstream underscores the critical need for ongoing maintenance and monitoring to ensure the safety and effectiveness of this essential structure for years to come.