Hanke Dam is a privately owned earth dam located in Colfax, Iowa, along the TR-Skunk River. Built in 1972 by the USDA NRCS, this dam serves multiple purposes including fire protection, stock watering, and small fish pond management. With a height of 26 feet and a length of 327 feet, Hanke Dam has a storage capacity of 36 acre-feet and covers a surface area of 3 acres.

The dam is regulated by the Iowa Department of Natural Resources and undergoes regular inspections, enforcement, and permitting processes. Classified as a low hazard potential structure, Hanke Dam has a moderate risk assessment rating of 3. While the dam's condition is currently not rated, it is important to note that emergency action plans and risk management measures are not yet in place.

Located in Jasper County, Iowa, Hanke Dam is a vital water resource structure that plays a crucial role in water management and conservation efforts in the region. Enthusiasts interested in water resources and climate will find Hanke Dam to be a fascinating example of a privately owned dam that serves both practical and environmental purposes.