Garrett Dam, located in Crawford County, Iowa, along the TR-Boyer River, was completed in 1967 by the USDA NRCS. This private dam serves multiple purposes, including fire protection, stock, and a small fish pond, with a primary height of 31 feet and a length of 343 feet. It has a storage capacity of 42 acre-feet and covers a surface area of 3 acres, with a drainage area of 0.25 square miles.

Managed by the Iowa DNR, Garrett Dam is classified as a low hazard potential structure with a moderate risk assessment. Despite not being rated for its condition, the dam is regularly inspected and maintained, meeting state regulations and permitting requirements. The spillway is uncontrolled, and the dam is constructed with earth materials on a soil foundation, making it an essential resource for water management and conservation in the region.

Water resource and climate enthusiasts can appreciate Garrett Dam for its role in providing essential services while also being a part of the environmental ecosystem. With its strategic location and design, the dam contributes to the sustainability of the local water supply, wildlife habitat, and flood control efforts. As a privately owned structure, it showcases the importance of collaboration between public and private entities in managing and protecting water resources for future generations.