East Fork Grand River Watershed Site B-31a is a flood risk reduction structure located in Ringgold County, Iowa. Managed by the local government and designed by the USDA NRCS, this earth dam was completed in 2010 and serves multiple purposes including fish and wildlife pond, grade stabilization, and recreation. With a dam height of 28 feet and a storage capacity of 46 acre-feet, this structure plays a crucial role in protecting the surrounding area from potential flooding events.

Situated on a tributary to the East Fork Grand River, this dam covers a drainage area of 0.14 square miles and has a maximum discharge capacity of 157 cubic feet per second. Despite its low hazard potential and the absence of a formal condition assessment, the East Fork Grand River Watershed Site B-31a stands as a testament to the importance of effective water resource management in mitigating the impacts of climate change and safeguarding communities against natural disasters. With its strategic location and multi-purpose design, this structure exemplifies the intersection of environmental conservation and infrastructure development in ensuring the resilience of our water resources.

As water resource and climate enthusiasts explore the intricacies of the East Fork Grand River Watershed Site B-31a, they are invited to appreciate the collaborative efforts of various agencies and stakeholders involved in its planning, construction, and ongoing maintenance. With features such as a stone core and soil foundation, this dam showcases the innovative engineering techniques employed to create a sustainable and effective flood control mechanism. Through continuous monitoring and inspection, this structure remains a vital asset in the region's water management network, highlighting the importance of proactive measures in adapting to changing environmental conditions and ensuring the long-term sustainability of our water resources.