Moulton Watershed Site B-2 is a key water resource located in Appanoose County, Iowa, specifically in the city of Coal City. Managed by the local government and designed by USDA NRCS, this site serves multiple purposes including fire protection, stock, small fish pond, and flood risk reduction. Built in 1962, the primary dam type is earth and it stands at a height of 30 feet with a length of 409 feet, providing a storage capacity of 106 acre-feet.

With a low hazard potential and a moderate risk assessment rating, Moulton Watershed Site B-2 is regulated by the Iowa DNR and undergoes state permitting, inspection, and enforcement. The dam's condition is currently not rated, but it has not shown any significant modifications since its last inspection in 1960. Despite its small drainage area of 0.3 square miles, this site plays a crucial role in water management and protection along the TR-Chariton River.

Water resource and climate enthusiasts will appreciate the significance of Moulton Watershed Site B-2 as a vital infrastructure for controlling floods, providing water for livestock, and enhancing biodiversity in the region. Its location within the Rock Island District underlines its importance in maintaining the ecological balance of the surrounding area. As efforts continue to monitor and assess the condition of this dam, it remains a valuable asset for water conservation and sustainable development in Iowa.