Blockton Watershed Site S-8, located in Blockton, Iowa, is a local government-owned dam designed by USDA NRCS and regulated by the Iowa DNR. Completed in 1966, this earth dam serves multiple purposes including fire protection, stock and small fish pond management, and flood risk reduction. With a dam height of 18 feet and a storage capacity of 55 acre-feet, the site covers a surface area of 4.1 acres and drains a 0.24 square mile watershed area, with the TR-Platte River running nearby.

Despite being classified as having a low hazard potential, the dam at Blockton Watershed Site S-8 is not currently rated for its condition. However, it is inspected, regulated, and permitted by the state of Iowa, ensuring its structural integrity and safety. The risk assessment for this site is moderate, with measures in place for risk management. Overall, Blockton Watershed Site S-8 serves as a vital resource for flood control and water management in the Taylor County region, contributing to the sustainable use of water resources and climate resilience in the area.