Lazy K Dam, located in Defiance, Iowa, was completed in 1972 and serves multiple purposes including fire protection and as a small fish pond. The earth dam stands at a height of 30 feet and spans 736 feet, with a storage capacity of 200 acre-feet. Situated on the TR-West Fork West Nishnabotna River, the dam is regulated by the Iowa Department of Natural Resources and is designed by the USDA NRCS.

With a low hazard potential and a moderate risk assessment rating, Lazy K Dam is a crucial infrastructure for water resource management in Crawford County, Iowa. The dam is state-jurisdiction regulated, with inspections and enforcement conducted by the Iowa DNR. Despite not having a current condition assessment, the dam continues to provide essential water storage and flood control benefits to the surrounding area.

Water resource and climate enthusiasts interested in the Lazy K Dam can appreciate its role in supporting local fire protection efforts and providing a habitat for small fish. With its earth construction and uncontrolled spillway, the dam represents a blend of functional design and natural resource conservation. As a privately owned structure, Lazy K Dam showcases the importance of collaboration between private owners and state regulatory agencies in managing water resources effectively.