Emerald Valley, located in Jackson, Minnesota, is a privately-owned dam that plays a crucial role in regulating water flow in the Heron Lake-TR river system. The dam stands at 27 feet tall and stretches 260 feet in length, with a storage capacity of 61 acre-feet. Although it was completed in an unspecified year, the dam is regularly inspected by the Minnesota Department of Natural Resources to ensure its structural integrity and regulatory compliance.

Despite its relatively low hazard potential, Emerald Valley dam has not been rated for its condition assessment. However, it is equipped with an emergency action plan and emergency contacts for quick response in case of any unforeseen incidents. The dam's primary purpose and associated structures are not specified, but its presence serves as a vital resource for water management and conservation efforts in the region.

As a part of the Rock Island District and under the regulatory oversight of the MNDNR EWR, Emerald Valley dam stands as a testament to the importance of private ownership in maintaining essential water infrastructure. Its location in the picturesque Emerald Valley area adds to its significance, making it a valuable asset for water resource and climate enthusiasts alike.