Located in Crawford County, Iowa, the Big Park Watershed Site D-3 is a key water resource managed by the local government with regulatory oversight from the Iowa Department of Natural Resources. This earth dam, constructed by the USDA NRCS in 1960, serves multiple purposes including fire protection, stock watering, small fish pond, and flood risk reduction. With a height of 36 feet and a length of 454 feet, the dam has a storage capacity of 78 acre-feet and covers a surface area of 5 acres.

Despite its low hazard potential, the dam has not been rated for its condition assessment, and there is no information available on its last inspection date or maintenance schedule. The risk assessment for the site is moderate, indicating potential concerns that need to be addressed. It is crucial for water resource and climate enthusiasts to monitor the management and maintenance of Big Park Watershed Site D-3 to ensure the safety and sustainability of its operations for the surrounding community and ecosystem.