Johnson Dam, located in Davis County, Iowa, is a private earth dam designed by the USDA NRCS and completed in 1996. With a height of 26 feet and a length of 260 feet, the dam serves multiple purposes including fire protection, stock watering, and small fish pond creation. Its primary source agency is Iowa, and it is situated on TR- North Chequest Creek.

The dam has a low hazard potential and is currently rated as "Not Rated" in terms of condition assessment. It has a normal storage capacity of 17 acre-feet and a maximum storage of 30 acre-feet. The dam's risk assessment is moderate (3), indicating a need for ongoing monitoring and management measures to ensure its safety and functionality in the face of potential hazards.

Despite not being regulated or inspected by the state, Johnson Dam plays a crucial role in water resource management in the area. Its presence on the North Chequest Creek provides valuable water storage and supply for fire protection and livestock needs. Enthusiasts interested in water resource management and climate resilience will find Johnson Dam to be an intriguing case study of a privately owned structure contributing to local water security and environmental sustainability.