Olson Dam, located in Decatur County, Iowa, was completed in 1964 and is primarily used for fire protection, stock watering, and as a small fish pond. Managed by a private owner, this earth dam stands at a height of 25 feet with a length of 408 feet, providing a storage capacity of 53 acre-feet. The dam is situated on TR-STEELE CREEK and is regulated by the Iowa Department of Natural Resources, ensuring its compliance with state permitting, inspection, and enforcement standards.

With a low hazard potential and a moderate risk assessment rating, Olson Dam presents a reliable water resource for the surrounding area. While it has not been assigned a condition assessment rating, the dam's structural integrity and safety measures are continuously monitored. Despite its uncontrolled spillway type and limited drainage area of 0.12 square miles, Olson Dam serves as a vital water management structure in the region, supporting agricultural activities and wildlife habitats.

Water resource and climate enthusiasts will appreciate the strategic placement and functionality of Olson Dam, contributing to the local ecosystem while providing essential services for fire protection and agricultural needs. As a part of the Rock Island District, this dam reflects the collaboration between private ownership and federal agencies such as the Natural Resources Conservation Service in ensuring the efficient operation and maintenance of water infrastructure in Iowa. The dam's historical significance and ongoing role in water management make it a noteworthy site for those interested in sustainable water resource practices and climate resilience efforts.