Beattie Dam, located in Union, Iowa, serves multiple purposes including fire protection, stock watering, and small fish pond maintenance. Constructed in 1966 by the USDA NRCS, this privately owned earth dam stands at a height of 43 feet and has a length of 395 feet. The dam has a storage capacity of 53 acre-feet, with a normal storage level of 39 acre-feet, covering a surface area of 4 acres and draining a watershed area of 0.15 square miles.

Managed by the Iowa Department of Natural Resources, Beattie Dam is regulated, permitted, inspected, and enforced for safety and compliance, ensuring its low hazard potential. Although the dam's condition assessment is not rated and the last inspection dates back to 1968, the risk assessment indicates a moderate risk level. The dam's spillway is uncontrolled, and there are no associated locks or gates. Overall, Beattie Dam plays a vital role in the local water resource management and provides essential services to the surrounding community.

For water resource and climate enthusiasts, Beattie Dam stands as a notable structure in Iowa's landscape, contributing to fire protection, agricultural activities, and ecological support. The dam's history, design, and regulatory oversight by the Iowa DNR highlight the importance of responsible dam management in safeguarding water resources and mitigating risks. As climate change continues to impact water availability and quality, understanding the role of dams like Beattie Dam in sustainable water management becomes increasingly crucial for ensuring resilience in the face of changing environmental conditions.