Greenwood Dam, located in Missouri Valley, Iowa, was completed in 1996 by the USDA NRCS and serves multiple purposes including fire protection, stock, and small fish pond. The dam is classified as an earth dam with a height of 34 feet and a length of 217 feet, providing a storage capacity of 28 acre-feet. Situated on TR- Harris Grove Creek, the dam is regulated and inspected by the Iowa DNR, ensuring its safety and compliance with state regulations.

Despite being rated as low hazard potential and in moderate condition, Greenwood Dam has not been formally assessed for its current condition. With a controlled spillway and no outlet gates, the dam poses minimal risk to the surrounding area. The dam is privately owned and falls under the jurisdiction of the state of Iowa, with no federal agency involvement in its funding, design, construction, or operation. Overall, Greenwood Dam serves as a vital resource for water management in Harrison County, Iowa, demonstrating effective water storage and management practices.