Linn Dam, located in Adair, Iowa, is a privately-owned structure designed by USDA NRCS for fire protection, stock, or small fish pond purposes. Completed in 1974, this earth dam stands at a height of 27 feet with a length of 505 feet, providing a storage capacity of 115 acre-feet. The dam is regulated by the Iowa DNR and is subject to state inspection, permitting, and enforcement.

Situated on TR-North Turkey Creek, Linn Dam serves as a vital resource for water management in the region, with a surface area of 10.5 acres and a drainage area of 0.21 square miles. Despite its low hazard potential, the dam has a moderate risk assessment of 3, prompting the need for risk management measures to ensure its continued safety and functionality. The dam's uncontrolled spillway type and soil foundation contribute to its overall structural integrity.

With its strategic location and purpose, Linn Dam plays a crucial role in water resource management and climate resilience efforts in the area. As a key component of the local ecosystem, it underscores the importance of sustainable water management practices and ongoing monitoring to safeguard against potential risks and ensure long-term water security for the community and surrounding environment.