Mc Guire Dam, located in Union, Iowa, serves multiple purposes including fire protection, stock, and small fish pond management. Built in 2003 by the NRCS, this privately owned earth dam stands at a height of 29 feet and spans 344 feet in length. With a storage capacity of 68 acre-feet and a surface area of 3.3 acres, the dam is situated on the TR- TWELVEMILE CREEK, providing essential water resources for the local community.

Despite its low hazard potential, Mc Guire Dam is still subject to regular state inspections and enforcement to ensure its structural integrity and safety. The dam's spillway type is uncontrolled, with a width of 2 feet, and its risk assessment is rated as moderate. While the dam is not currently rated for its condition, it remains a crucial asset for water management in the area.

Managed by private owners, Mc Guire Dam plays a vital role in water resource management in the region, contributing to fire protection, stock management, and small fish pond support. With its construction overseen by the NRCS and its completion in 2003, this earth dam continues to provide essential water storage and management services for the surrounding community.