Long Dam, located in Red Rock Reservoir in Warren County, Iowa, was completed in 1967 by the USDA NRCS and serves multiple purposes including fire protection and creating a stock or small fish pond. This earth dam stands at a height of 41 feet and has a length of 317 feet, providing a normal storage capacity of 41 acre-feet with a maximum storage of 49 acre-feet. The dam's primary source agency is Iowa DNR and it is regulated and permitted by the state, with inspections and enforcement conducted regularly.

Although Long Dam has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment, it poses a moderate risk (3) based on a risk assessment. The dam's spillway is uncontrolled, with a surface area of 3.1 acres and a drainage area of 0.08 square miles. While the dam has not been modified in recent years, it has not undergone a condition assessment and lacks an emergency action plan. Despite these shortcomings, Long Dam remains a crucial structure for water resource management and climate resilience in the area, warranting continued monitoring and maintenance by the relevant authorities to ensure its safety and functionality for the future.