Riemer Dam, located in Marion County, Iowa, was completed in 1965 and serves multiple purposes including fire protection, stock watering, and small fish pond management. Designed by the USDA NRCS, this private dam is regulated by the Iowa DNR and meets state permitting, inspection, and enforcement requirements. With a height of 25 feet and a length of 340 feet, Riemer Dam has a storage capacity of 23 acre-feet and covers a surface area of 3 acres, drawing water from TR- Butcher Creek.

Despite being categorized as low hazard potential with a moderate risk assessment, the condition of Riemer Dam is currently not rated. It features an uncontrolled spillway and a soil foundation, with a primary purpose of providing essential water resources for local fire protection and agricultural needs. The dam, situated in a scenic location in Knoxville, Iowa, is owned by a private entity and is not associated with any federal agencies for funding or operations. While the dam has not undergone recent inspections, it remains a significant feature in the local landscape for water resource and climate enthusiasts.