Mill Picayune Watershed Site P-79-2 is a low hazard potential earth dam located in Woodbine, Iowa, designed by the USDA NRCS and completed in 1986. The dam serves multiple purposes including fire protection, stock, small fish pond, and flood risk reduction. With a dam height of 50 feet and a storage capacity of 220 acre-feet, it covers a surface area of 10.7 acres and drains a 0.42 square mile watershed area.

Managed by the local government and regulated by the Iowa DNR, this dam on the TR- Picayune Creek is considered to have a moderate risk level. While its condition assessment is not rated, the dam has not been modified since its completion. With uncontrolled spillways and no outlet gates, the dam's emergency action plan status and risk management measures are currently unknown. Despite these uncertainties, the Mill Picayune Watershed Site P-79-2 stands as a vital infrastructure contributing to water resource management and climate resilience in the region.