Tyer Dam, located in Woodbury County, Iowa, is a privately owned structure completed in 1997 with a primary purpose of fire protection, as well as serving as a stock or small fish pond. The dam, designed by NRCS, is an earth dam standing at 22 feet in height and stretching 856 feet in length. It has a storage capacity of 90 acre-feet, with a normal storage level of 33 acre-feet and a surface area of 6.6 acres.

Managed and regulated by the Iowa Department of Natural Resources, Tyer Dam is considered to have a low hazard potential with a moderate overall risk assessment. While the dam does not have a designated emergency action plan (EAP) in place, it meets regulatory guidelines for inspection, enforcement, and permitting. The structure is situated on TR-Deer Creek and falls under the jurisdiction of the state of Iowa for oversight and maintenance.

For water resource and climate enthusiasts, Tyer Dam offers a unique opportunity to study the impact of small-scale dams on local ecosystems and water management practices. With its low hazard potential and moderate risk assessment, the dam provides a fascinating case study for understanding the role of privately owned structures in maintaining water resources for fire protection and agricultural needs in the region.