Richardson Dam, located in Decatur County, Iowa, is a privately owned earth dam constructed in 1985 by the USDA NRCS. The dam serves multiple purposes including fire protection, stock, and acting as a small fish pond, with a storage capacity of 33 acre-feet. The dam has a low hazard potential and a moderate risk assessment rating.

Managed by the Iowa DNR, Richardson Dam is state regulated and undergoes regular inspections for maintenance and enforcement. The dam is situated on TR- STEELE CR. near LITTLE RIVER LAKE, providing essential water resource management in the region. With a surface area of 2.6 acres and a drainage area of 0.08 square miles, the dam plays a crucial role in protecting the surrounding area from potential flooding.

Overall, Richardson Dam stands as a vital infrastructure for water resource management and climate resilience in Decatur County, Iowa. With its strategic location and multi-purpose design, the dam continues to serve the community by providing essential water storage and flood protection while also supporting local fire protection and recreational activities. Its low hazard potential and moderate risk assessment underscore the importance of continued monitoring and maintenance to ensure its long-term effectiveness in safeguarding the area against potential water-related challenges.