Greubel Dam in Iowa, managed by a private entity, was completed in 1962 for fire protection, stock, and small fish pond purposes. The dam is of earth type with a height of 26 feet and a length of 504 feet, providing a storage capacity of 49 acre-feet. Located in Warren County near Red Rock Reservoir, the dam regulates the flow of TR-Flank Creek and covers a surface area of 3.7 acres with a drainage area of 0.16 square miles.

Despite being classified as having a low hazard potential, Greubel Dam's condition is currently unrated, with its last inspection conducted in 1967. The dam is under state jurisdiction and regulated by the Iowa Department of Natural Resources, with permitting, inspection, and enforcement protocols in place. While the risk assessment for the dam is moderate, with a rating of 3, further details on risk management measures and emergency preparedness are not provided in the available data. Overall, Greubel Dam stands as a vital infrastructure contributing to water resource management in the region.