Blockton Watershed Site J-1 is a vital water resource located in Taylor, Iowa, near the city of Athelstan. This site is a local government-owned earth dam completed in 1966 by the USDA NRCS, with a primary purpose of providing fire protection, stock, or a small fish pond. The dam stands at a height of 28 feet and spans a length of 698 feet, creating a storage capacity of 249 acre-feet and a surface area of 16.5 acres. It is regulated by the Iowa DNR and serves to reduce flood risks in the area.

The Blockton Watershed Site J-1 is situated along the TR-Platte River and falls under the jurisdiction of the Rock Island District of the USACE. Despite its low hazard potential, the dam is considered to have a moderate risk level and is currently not rated for its condition. With a drainage area of 1.16 square miles, this site plays a crucial role in managing water resources and safeguarding against potential emergencies. For water resource and climate enthusiasts, this site presents an intriguing case study in dam infrastructure and watershed management in the heart of Iowa.

As an essential component of the local water infrastructure, Blockton Watershed Site J-1 offers a fascinating glimpse into the intersection of water resource management, environmental conservation, and climate resilience. With its connection to the Platte River and its role in flood risk reduction, this dam serves as a valuable asset for the community of Athelstan and beyond. For those passionate about water resources and climate adaptation, exploring the design, construction, and regulation of this site provides valuable insights into the challenges and opportunities in managing our natural resources effectively.