Park Lake, located in Mahtowa, Minnesota, is a locally-owned earth dam structure built in 1963 for purposes other than flood control. The dam, with a height of 7 feet and a storage capacity of 4800 acre-feet, regulates Park Lake Creek and covers a surface area of 376 acres. Despite its low hazard potential, the dam's condition assessment in 2017 rated as poor, indicating the need for maintenance and repairs to ensure its structural integrity.

Managed by the Minnesota Department of Natural Resources, Park Lake Dam is subject to state regulations, permitting, inspections, and enforcement. The dam's primary source agency is the state of Minnesota, and it falls under the jurisdiction of Carlton County. The dam's location in S29 T048N R18W boasts scenic views and recreational opportunities, making it a popular spot for water resource and climate enthusiasts to explore and appreciate.

As an integral part of the local water infrastructure, Park Lake Dam plays a crucial role in managing water resources and protecting the surrounding environment. With its designated purpose and historical significance, this earth dam structure serves as a focal point for understanding the intersection of human activity and natural ecosystems in the context of water management and climate resilience.