Garst Dam, located in Guthrie County, Iowa, is a privately-owned earth dam completed in 1977 by the USDA NRCS. The dam serves multiple purposes, including fire protection and creating a small fish pond, with a storage capacity of 78 acre-feet and a normal storage level of 53 acre-feet. Situated in the scenic surroundings of Spring Brook State Park on the TR-Middle Raccoon River, the dam spans 435 feet in length and stands at a height of 25 feet, with a low hazard potential.

Managed by the Iowa Department of Natural Resources, Garst Dam is subject to state regulation, permitting, inspection, and enforcement. Although the dam has not been rated for its condition, it is considered to have a moderate risk level. With its uncontrolled spillway and soil foundation, the dam poses no immediate threat, and its risk management measures are currently unspecified. Water resource and climate enthusiasts will find Garst Dam to be a fascinating example of earth dam construction, contributing to the local ecosystem and providing essential services to the community while maintaining a low hazard profile.