Big Park Watershed Site C-2 in Crawford, Iowa, is a locally owned and regulated earth dam completed in 1962 by USDA NRCS for fire protection, stock, and small fish pond purposes. Located in Dunlap along the TR-Boyer River, this dam stands at 36 feet tall and spans 300 feet in length, with a storage capacity of 53 acre-feet. With a surface area of 3 acres and a drainage area of 0.44 square miles, this dam plays a crucial role in flood risk reduction in the area.

Despite its low hazard potential and moderate risk assessment, Big Park Watershed Site C-2 has not been rated for its condition as of yet. The dam's spillway type is uncontrolled, and there are no outlet gates or associated structures. Even though the dam meets state regulatory requirements for permitting, inspection, and enforcement, there is no information available on its inspection frequency or last inspection date. Overall, this site serves as an essential water resource infrastructure for the local community, providing multiple benefits while managing flood risks in the area.