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.
Wind
Humidity
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.
Year Completed |
1967 |
Dam Length |
317 |
Dam Height |
41 |
River Or Stream |
TR-SOUTH RIVER |
Primary Dam Type |
Earth |
Surface Area |
3.1 |
Drainage Area |
0.08 |
Nid Storage |
49 |
Hazard Potential |
Low |
Foundations |
Soil |
Nid Height |
41 |