Koeller and Klein is a privately-owned dam located in Grant, Wisconsin, along the TR Boice Creek. Built in 1963 by the USDA NRCS, this earth dam stands at a height of 27 feet and serves primarily for fire protection, stock, and small fish pond purposes. With a storage capacity of 18 acre-feet and a surface area of 1 acre, the dam plays a crucial role in managing water resources in the area.

Despite its low hazard potential and fair condition assessment, Koeller and Klein poses a very high risk due to its location and potential impact in the event of a failure. The dam has been inspected periodically, with the last assessment conducted in May 2020. While it meets regulatory requirements and is under the jurisdiction of the Wisconsin Department of Natural Resources, there are no emergency action plans in place, highlighting the need for risk management measures to be implemented to ensure the safety and integrity of the structure.

With its controlled spillway and historic significance as a water resource management feature, Koeller and Klein represents a valuable asset in the region. As water resource and climate enthusiasts, understanding the risk profile and condition of dams like this is essential for promoting sustainable water management practices and enhancing community resilience in the face of changing climate conditions.