Hand is a private dam located in Dewey, South Dakota, along the TR MOREAU river. Built in 1946, this earth dam stands at 17 feet tall and stretches 550 feet in length, with a storage capacity of 88 acre-feet. Managed by the South Dakota Department of Environment and Natural Resources (DENR), Hand is regulated, inspected, and enforced by the state to ensure its safety and compliance with regulations. Despite its low hazard potential, the dam's condition assessment is currently not rated, and it lacks an Emergency Action Plan (EAP) and other risk management measures.

Situated within the St. Paul District of the US Army Corps of Engineers, Hand poses minimal risk but remains a crucial water resource for the local area. The dam's primary purpose and associated structures are unspecified, and its last inspection date, condition assessment, and emergency preparedness status are unknown. With its location in a rural area and the absence of an inundation map or risk assessment, the importance of monitoring and maintaining Hand for water resource and climate enthusiasts cannot be understated.

As a significant feature in South Dakota's water infrastructure, Hand serves as a reminder of the importance of dam safety and regulation in mitigating risks and ensuring the sustainable management of water resources. With its historical significance dating back to the mid-20th century, ongoing monitoring and updates are essential to address any potential safety concerns and ensure the continued functionality of this earth dam. For enthusiasts interested in water resources and climate, Hand presents a case study in the intersection of infrastructure, regulation, and environmental stewardship.