Heller Dam, located in Amana, Iowa, is a private earth dam designed by the USDA NRCS and completed in 1977 for fire protection, stock, or small fish pond purposes along the TR-Iowa River. The dam stands at a height of 26 feet with a length of 300 feet, providing a storage capacity of 54 acre-feet and a surface area of 4.3 acres. Despite having a low hazard potential and a moderate risk assessment rating, the dam has not been rated for its condition assessment and lacks emergency action plans and inundation maps.

Managed by the Iowa Department of Natural Resources, Heller Dam is subject to state regulation, permitting, inspection, and enforcement. While the dam has not undergone recent inspections or had emergency action plans updated, it is maintained by the private owner and has no associated structures or outlet gates. With a controlled spillway type, the dam poses a low risk of failure but could benefit from updated risk management measures and compliance with guidelines for emergency preparedness.

For water resource and climate enthusiasts interested in the management and condition of Heller Dam, there is potential for increased monitoring and maintenance to ensure the safety and functionality of the structure. With its location in the Detroit District and under the jurisdiction of the Iowa DNR, the dam serves as a key element in providing water storage and protection in the region. Addressing the lack of recent assessments and emergency plans could further enhance the resilience of Heller Dam in the face of changing weather patterns and potential hazards.