Marywood Farms Dam, located in Red Rock Reservoir in Warren County, Iowa, was completed in 1966 and serves multiple purposes including fire protection, stock watering, and small fish pond management. The dam, with a height of 35 feet and a length of 655 feet, has a normal storage capacity of 156 acre-feet and a maximum storage capacity of 208 acre-feet. It is primarily owned and regulated by a private entity, with oversight from the Iowa Department of Natural Resources.

The dam, designed by the USDA NRCS, is classified as an earth dam with a soil foundation. Despite being rated as having a low hazard potential and not yet assessed for condition, the risk assessment for Marywood Farms Dam is moderate. The dam has an uncontrolled spillway and has not been inspected since October 1967. The surrounding area has a surface area of 12.3 acres and a drainage area of 0.4 square miles, with the South River flowing nearby.

Although the dam has not been updated in recent years and lacks an Emergency Action Plan, its moderate risk assessment highlights the importance of continued monitoring and maintenance to prevent potential hazards. Water resource and climate enthusiasts interested in sustainable dam management and conservation efforts may find Marywood Farms Dam a compelling case study for the intersection of private ownership, state regulation, and environmental stewardship in maintaining critical water infrastructure.