Lake Kathryn South Dam, located in Sussex, New Jersey, is a private earth dam primarily used for recreation purposes. With a height of 10 feet and a length of 200 feet, the dam holds a normal storage capacity of 84 acre-feet and covers a surface area of 12 acres. The dam is regulated by the New Jersey Department of Environmental Protection and undergoes regular inspections to ensure its safety and compliance with state regulations.

Despite being classified as low hazard potential, the condition of Lake Kathryn South Dam is currently not rated. The last inspection date was recorded in January 2000, with a scheduled inspection frequency of 4 years. While emergency action plans and risk assessments are not specified in the data, the dam's location in Stillwater Township and its association with a small branch river make it an important water resource for the surrounding area. Additionally, the dam falls under the jurisdiction of Congressional District 05 in New Jersey, represented by Josh S. Gottheimer.

Overall, Lake Kathryn South Dam serves as a vital recreational resource in Sussex County, offering water-based activities and scenic views for visitors and residents alike. As a privately owned structure, the dam plays a crucial role in water management and conservation efforts in the region. With its regulated status and regular inspections, Lake Kathryn South Dam continues to provide a safe and enjoyable environment for water enthusiasts and climate advocates to appreciate and protect.