Green Dam, located in Medora, Iowa, is a local government-owned earth dam completed in 1972 for fire protection, stock, and small fish pond purposes. With a height of 25 feet and a length of 390 feet, Green Dam has a storage capacity of 40 acre-feet and a surface area of 4 acres, serving as a vital water resource in the region. The dam is regulated by the Iowa Department of Natural Resources and meets state permitting, inspection, and enforcement requirements.

Despite its low hazard potential and moderate risk assessment, Green Dam's condition assessment is currently not rated, highlighting the need for ongoing monitoring and maintenance to ensure its structural integrity and safety. The dam features an uncontrolled spillway and is situated on the TR-Squaw Creek, contributing to the drainage area of 0.17 square miles. With its strategic location and crucial role in water management, Green Dam serves as a key asset for flood control and water storage in Clarke County, Iowa. Climate and water resource enthusiasts can appreciate the significance of Green Dam in protecting local communities and supporting ecological sustainability.