Located in Danbury, Iowa, Lingren Dam #3 is a privately owned earth dam completed in 2002 with a primary purpose of fire protection, stock, or small fish pond. Measuring 32 feet in height and 528 feet in length, the dam sits on the TR-Maple River and has a storage capacity of 122 acre-feet. With a surface area of 7.7 acres and a drainage area of 0.69 square miles, the dam is regulated by the Iowa Department of Natural Resources and undergoes regular inspections and enforcement to ensure its safety and compliance.

Despite its low hazard potential and moderate risk assessment, Lingren Dam #3 has not been given a formal condition rating. The dam features an uncontrolled spillway with a width of 2 feet and has not been modified since its construction. While emergency action plans and inundation maps have not been prepared for the dam, its risk management measures are not specified. With its location in a rural area and minimal associated structures, Lingren Dam #3 serves as a vital resource for the local community, providing essential water storage and protection for surrounding properties.