Hideaway Pond Dam, also known as the Us Naval Proving Ground Dam, is a Federal-owned structure located in King George, Virginia within the Dahlgrin Naval Reservation. Completed in 1983, this earth dam stands at a height of 12 feet and has a hydraulic height of 9.8 feet, serving primarily for recreational purposes. With a storage capacity of 182 acre-feet and a surface area of 15 acres, it provides a tranquil setting for visitors to enjoy the surrounding natural environment.

The dam, constructed by the US Navy, is classified as having a low hazard potential and fair condition assessment, with the last inspection conducted in March 2017. The spillway of the dam is uncontrolled and has a width of 24 feet, while the maximum discharge rate is 89 cubic feet per second. The risk assessment for Hideaway Pond Dam is moderate, indicating a need for ongoing monitoring and management measures to ensure its continued safety and functionality for the community.

Situated on the TR-Gambo Creek, Hideaway Pond Dam is a key feature within the Norfolk District of the US Army Corps of Engineers. Despite its low hazard potential, the dam plays an important role in providing recreational opportunities and maintaining the ecological balance of the surrounding area. Climate and water resource enthusiasts can appreciate the significance of this structure in both its environmental and recreational capacities within the Dahlgrin Naval Reservation.