Perch Lake, located in Blue Earth, Minnesota, is a state-regulated water resource with a low hazard potential and a satisfactory condition assessment. This earth dam, completed in 1973, has a height of 8 feet and a storage capacity of 2844 acre-feet, with a normal storage level of 555 acre-feet. The lake covers a surface area of 310 acres and serves as a vital water source for the surrounding area.

Managed by the Minnesota Department of Natural Resources, Perch Lake plays a crucial role in maintaining water levels and regulating the flow of the Cobb River-TR. With a maximum discharge of 25 cubic feet per second, this dam serves multiple purposes beyond flood control, making it a versatile structure that benefits both the environment and local communities. Despite being last inspected in 2018, the dam's condition remains satisfactory, ensuring its continued effectiveness in water resource management.

For water resource and climate enthusiasts, Perch Lake presents an intriguing case study in dam infrastructure and its impact on regional water systems. As a key component of Minnesota's water management strategy, this earth dam provides valuable insights into the intersection of environmental stewardship, regulatory compliance, and community resilience in the face of changing climate conditions. By understanding the history and function of Perch Lake, enthusiasts can gain a deeper appreciation for the complex dynamics at play in ensuring the sustainable use of our water resources.