Located in Lamoni, Iowa, the East Fork Big Cr Watershed Site E-5 is a flood risk reduction structure designed by the USDA NRCS in 1990. This earth dam stands at a height of 14 feet and spans 515 feet, with a storage capacity of 97 acre-feet. Serving multiple purposes such as fire protection, stock, or small fish pond, the primary purpose of this dam is flood risk reduction, safeguarding the surrounding area from potential inundation.

Managed by the Iowa DNR and with state jurisdiction and regulatory oversight, this dam is classified as having a low hazard potential and a moderate risk assessment. Despite not having a condition rating, the structure is regularly inspected, permitted, and enforced upon to ensure its functionality and safety. The 6.8-acre surface area and 0.29 square miles drainage area of the dam play a crucial role in water resource management and climate resilience in Decatur County, Iowa.

With a spillway type of 'Uncontrolled' and no associated locks or gates, the East Fork Big Cr Watershed Site E-5 serves as a vital infrastructure for flood control and water conservation in the region. As water resource and climate enthusiasts, understanding the design, functionality, and regulatory framework of such structures is essential in ensuring sustainable water management and environmental protection in the face of changing climate patterns.