Located in Monona, Iowa, the Croy Subwatershed Site M-7500 is a local government-owned earth dam completed in 1952 by the USDA NRCS. With a primary purpose of fire protection, stock, or small fish pond, this dam also serves for flood risk reduction. The dam stands at a height of 34 feet, with a storage capacity of 104 acre-feet and a surface area of 3 acres. Despite being classified as low hazard potential, the site is regulated by the Iowa DNR and undergoes regular state inspections and enforcement to ensure public safety and environmental protection.

Situated on the TR- Maple River, the Croy Subwatershed Site M-7500 plays a vital role in managing water resources in the region. With a drainage area of 0.81 square miles, this earth dam helps control water flow and minimize flood risks for the surrounding area. The dam's moderate risk assessment underscores the importance of ongoing monitoring and maintenance to uphold its structural integrity and ensure effective flood control measures are in place.

As a key component of the local water infrastructure, the Croy Subwatershed Site M-7500 serves as a critical asset for the community of Little Sioux. With its multifaceted purposes and regulated design, this dam exemplifies the intersection of water resource management and climate resilience. Ongoing efforts to maintain and enhance the site will be essential in safeguarding the region's water supply and protecting against potential flood hazards in the future.