Johnson is a private dam located in Shelby, Tennessee, along the Big Creek Drainage Canal. Built in 1950 for recreational purposes, this Earth-type dam stands at a height of 10.6 feet, with a hydraulic height of 9.2 feet. It has a storage capacity of 48 acre-feet and covers a surface area of 9.2 acres, serving as a popular spot for outdoor activities.

Despite being privately owned, Johnson has not been regulated or inspected by the state. With a significant hazard potential and a moderate risk assessment rating, this dam poses some safety concerns that need to be addressed. While it has not been condition rated, regular inspections are recommended to ensure the structural integrity of the dam and the safety of surrounding areas.

Although Johnson does not have a designated Emergency Action Plan (EAP) or updated contact information for emergencies, it remains a key recreational site in the region. As climate change continues to impact water resources, it is essential for dam owners and authorities to prioritize maintenance and safety measures to mitigate potential risks and ensure the long-term sustainability of this valuable resource.