Located in Eldon, Iowa, the Leffler Dam is a private earth dam with a primary purpose of flood risk reduction on Little Soap Creek. Constructed in 2017 by USDA NRCS, this dam stands at a height of 29 feet and has a length of 400 feet, providing a maximum storage capacity of 102 acre-feet. The dam's low hazard potential and not rated condition assessment make it a reliable structure for mitigating flood risks in the area.

Managed by the Iowa Department of Natural Resources, the Leffler Dam is state-regulated and subject to regular inspections and enforcement to ensure its functionality and safety. With a spillway width of 12 feet and a maximum discharge of 63 cubic feet per second, the dam is equipped to handle excess water flow during heavy rainfall events. Its strategic location and design contribute to the overall flood risk reduction efforts in Wapello County, Iowa.

For water resource and climate enthusiasts, the Leffler Dam serves as a vital infrastructure for protecting the surrounding community from potential flooding. As part of the flood risk reduction efforts in the region, this earth dam plays a crucial role in managing water flow and safeguarding properties along Little Soap Creek. Its construction and operation demonstrate a proactive approach to water management and environmental resilience in the face of changing climate patterns.