Arnold Lake Dam, located in Ames, Iowa, was completed in 1964 and serves multiple purposes including fire protection, stock, and small fish pond management. The dam, designed by USDA NRCS, is a private-owned earth dam standing at 36 feet high and stretching 330 feet in length. It has a storage capacity of 49 acre-feet and covers a surface area of 3.5 acres, with a drainage area of 0.15 square miles.

Managed by the Iowa Department of Natural Resources, Arnold Lake Dam is regulated, inspected, and enforced by the state. The dam poses a low hazard potential and is currently rated as 'Not Rated' in terms of its condition assessment. While the dam's spillway type is uncontrolled, it has a moderate risk classification, indicating a need for ongoing risk management measures to ensure its safety and longevity.

Situated along the TR-Skunk River, Arnold Lake Dam not only plays a crucial role in water resource management but also provides recreational opportunities for the local community. As an enthusiast in water resources and climate, exploring the design, construction, and maintenance of Arnold Lake Dam can offer valuable insights into the intersection of infrastructure, environmental protection, and public safety in the face of changing climate dynamics.