Miller Dam, located in Rathbun Reservoir, Iowa, is a private-owned structure designed by the USDA NRCS and regulated by the Iowa DNR. Completed in 1977, this earth dam stands at 25 feet high and spans 372 feet in length, with a storage capacity of 59 acre-feet. Its primary purpose is for fire protection, stock, or as a small fish pond, serving as a vital resource for the surrounding community.

With a low hazard potential and a moderate risk assessment rating, Miller Dam plays a crucial role in water resource management in the area. While the dam has not been rated for its condition, it is subject to state permitting, inspection, and enforcement to ensure its safety and functionality. The dam's location on TR-Sandy Brook in Appanoose County, Iowa, makes it a key component in the local watershed and contributes to the overall water infrastructure of the region.

Despite its relatively small size, Miller Dam is an essential part of the water supply and management network in the area. As a privately-owned structure with state regulation, it highlights the collaborative efforts between government agencies and private entities in ensuring the sustainability and safety of water resources. With its strategic design and purpose, Miller Dam stands as a testament to the importance of responsible water resource management in the face of climate challenges.