Griggs Dam, located in Grace Hill, Iowa, is a privately owned earth dam constructed in 1969 by the USDA NRCS. The dam serves multiple purposes including fire protection, stock, and small fish pond. With a height of 27 feet and a length of 376 feet, it has a storage capacity of 82 acre-feet and covers a surface area of 4.5 acres.

Managed by the Iowa DNR, Griggs Dam is regulated and inspected by the state to ensure its safety and compliance with regulations. The dam poses a low hazard potential and has a moderate risk assessment rating. Despite not being rated for its condition, it meets guidelines for emergency action planning and risk management measures. The dam is situated on TR-Indian Creek in Washington County, Iowa, within the Rock Island District.

Water resource and climate enthusiasts will find Griggs Dam to be an interesting structure due to its unique design and multiple purposes. With a focus on fire protection and providing water for stock and small fish ponds, the dam plays a vital role in the local ecosystem. Its location in a regulated area and the involvement of various federal and state agencies highlight the importance of proper management and maintenance of this essential water resource infrastructure.