Big Park Watershed Site F-2, located in Dow City, Iowa, is a critical resource for fire protection, livestock, and small fish pond purposes. Managed by the USDA NRCS, this earth dam stands at a height of 45 feet and stretches 646 feet in length, with a storage capacity of 184 acre-feet. With a low hazard potential and moderate risk assessment, this dam on the TR-Boyer River serves as a key component in flood risk reduction efforts in the area.

Constructed in 1970, this dam plays a vital role in safeguarding the surrounding Crawford County area from potential flooding events. With a drainage area of 0.88 square miles and a normal storage capacity of 83 acre-feet, this structure also offers recreational opportunities for the community. Despite not being rated for its condition, the dam at Big Park Watershed Site F-2 is subject to state regulation and inspection, ensuring its continued functionality and safety for the local residents and ecosystem.

As part of the Rock Island District, this site is a testament to effective water resource management and environmental stewardship in Iowa. With the support of the Iowa DNR and other state agencies, the dam at Big Park Watershed Site F-2 represents a collaborative effort to protect and preserve the region's water resources for future generations.