Swanger Dam, located in Danbury, Iowa, was completed in 1970 with a primary purpose of fire protection, stock, or small fish pond. The dam is privately owned and regulated by the Iowa Department of Natural Resources. Spanning 580 feet in length and standing at 42 feet high, the earth dam holds a storage capacity of 115 acre-feet with a normal storage of 63 acre-feet.

Situated on TR-Morehead Creek, Swanger Dam serves as a crucial resource for water management in Woodbury County. With a low hazard potential and a moderate risk assessment rating, the dam plays a key role in flood control and water supply for the surrounding area. The dam's spillway type is uncontrolled, and it has not been rated for condition assessment.

Enthusiasts of water resource management and climate adaptation will find Swanger Dam to be a fascinating example of infrastructure designed for multiple purposes, including fire protection and ecological conservation. With its strategic location and moderate risk profile, the dam represents a balancing act between human needs and environmental stewardship in the face of changing climate conditions.