Florence South Reservoir No. 1, also known as North Cell, is a local government-owned water supply reservoir located in Coal Creek, Colorado. Completed in 1904, this earth dam stands at a height of 30 feet and has a storage capacity of 325 acre-feet. The reservoir serves the primary purpose of water supply and is regulated by the Colorado Department of Water Resources, with state permitting, inspection, and enforcement measures in place.

With a surface area of 15 acres and a maximum discharge of 25 cubic feet per second, Florence South Reservoir No. 1 plays a crucial role in the water management of the area. Despite being classified as having a high hazard potential, the dam is assessed to be in fair condition as of the last inspection in April 2020. The Emergency Action Plan (EAP) for the reservoir meets guidelines, and risk management measures are in place to address potential risks associated with the dam.

Overall, Florence South Reservoir No. 1 is a vital water resource infrastructure in Custer County, Colorado, providing essential water supply for the region. As a significant component of the local water management system, the reservoir's condition and regulatory compliance ensure the safety and sustainability of its operations for the community it serves. Climate and water resource enthusiasts would find value in studying the management and maintenance practices of this historic dam to understand its role in addressing water supply challenges in the region.