Greene County Roadgrade Dam 28-85-32, located in Jefferson, Iowa, is a local government-owned structure designed by the Greene County Engineer. Completed in 1986, this earth dam stands at a height of 30 feet and spans a length of 620 feet. Situated on TR- Cedar Creek, it serves a primary purpose of "Other" and has a storage capacity of 140 acre-feet, with a normal storage level of 33 acre-feet.

Despite its low hazard potential, the dam is regulated by the Iowa Department of Natural Resources and undergoes state inspection, permitting, and enforcement. The risk assessment for Greene County Roadgrade Dam 28-85-32 is moderate, indicating a level 3 risk. While the condition assessment is currently not rated, the dam meets state jurisdiction and regulatory requirements, ensuring its structural integrity and safety for the surrounding area. Water resource and climate enthusiasts will appreciate this well-maintained dam's role in managing water flow and protecting downstream areas along TR- Cedar Creek in Greene County, Iowa.