Alden Milldam, located in Alden, Iowa, is a gravity-type dam constructed in 1932 on the Iowa River for recreational purposes. The dam stands at 11 feet tall and spans 375 feet in length, with a storage capacity of 762 acre-feet. Although the primary purpose of the dam is for recreation, it also serves as a state-regulated structure under the jurisdiction of the Iowa Department of Natural Resources.

The dam has a low hazard potential and is currently rated as "Not Rated" in terms of its condition assessment. The last inspection was conducted in 1989, with no updated assessment available. Despite its moderate risk level, the dam has not been assigned a Dam Safety Action Classification (DSAC) date, and no specific risk management measures have been identified. It is important for water resource and climate enthusiasts to monitor the maintenance and safety of Alden Milldam to ensure its continued functionality and public safety in the face of potential climate challenges.