Rocky Branch Creek Watershed Site A-5, located in Jefferson County, Iowa, is a dam constructed in 1960 by the USDA NRCS for fire protection, stock, and small fish pond purposes. The earth dam stands at a height of 26 feet and spans a length of 318 feet, with a storage capacity of 35 acre-feet. The watershed area for this site covers 0.17 square miles, with a surface area of 2.3 acres.

Managed by the Iowa DNR, this dam is state-regulated and inspected for safety and compliance. While the hazard potential is rated low, the risk assessment indicates a moderate level. The dam features an uncontrolled spillway and is designed to reduce flood risks in the area. Even though the last inspection was conducted in 1973, the condition assessment remains unrated, highlighting the need for continued monitoring and maintenance to ensure the structure's integrity and effectiveness in water resource management within the Rocky Branch Creek watershed.