Schlies Dam, located in Mapleton, Iowa, is a private earth dam completed in 1997 by the USDA NRCS. With a height of 36 feet and a length of 539 feet, the dam serves a primary purpose of fire protection, stock, or small fish pond. It has a storage capacity of 74 acre-feet and covers a surface area of 3.1 acres, with a drainage area of 0.39 square miles.

Managed by the Iowa DNR, Schlies Dam is regulated and inspected by the state, ensuring its safety and functionality. The dam has a low hazard potential and a moderate risk assessment level, indicating a manageable level of risk. The spillway type is uncontrolled, and the dam is situated on TR-Heisler Creek in Monona County, Iowa, providing essential water resources for the surrounding area.

Enthusiasts of water resources and climate will find Schlies Dam to be an intriguing structure, contributing to fire protection and water storage in the region. With its unique design and purpose, the dam plays a vital role in maintaining water resources and supporting the ecosystem of TR-Heisler Creek. Its construction and management demonstrate a commitment to sustainable water management practices, making it a noteworthy site for those interested in environmental conservation and water infrastructure.