Located in Crawford, Iowa, Hamaker Dam is a privately owned earth dam constructed in 1961 by the USDA NRCS. With a height of 30 feet and a length of 410 feet, the dam serves multiple purposes including fire protection and creating a small fish pond. Situated on the TR-Boyer River, the dam has a storage capacity of 77 acre-feet and covers a surface area of 4 acres, providing essential water resources for the local community.

Managed by the Iowa Department of Natural Resources, Hamaker Dam is regulated, permitted, inspected, and enforced to ensure its structural integrity and safety. Despite being classified as having a low hazard potential, the dam is rated as not assessed for its condition. With a moderate risk assessment score of 3, the dam is closely monitored for any potential risks or vulnerabilities, although specific risk management measures have not been outlined.

Water resource and climate enthusiasts can appreciate the significance of Hamaker Dam in providing essential water storage for fire protection and recreational activities in the area. As a key structure in the region, the dam stands as a testament to effective water management practices and serves as a vital resource for both the community and the environment.