Calhoun, located in Richland, Wisconsin, is a privately owned earth dam designed by USDA NRCS in 1972. With a height of 28 feet and a length of 275 feet, Calhoun serves a primary purpose of "Other" and has a maximum storage capacity of 18 acre-feet. The dam's hazard potential is classified as low, with a moderate risk assessment rating.

Managed and funded by the Natural Resources Conservation Service, Calhoun features an uncontrolled spillway and outlet gates. While its condition assessment is currently not available, the dam undergoes inspections every 10 years to ensure its structural integrity. Despite its low hazard potential, the risk assessment for Calhoun is moderate, indicating a need for ongoing risk management measures to be in place.

Calhoun's location within the St. Paul District and its association with the USDA NRCS highlight its importance in water resource management and climate resilience efforts. As a key piece of infrastructure in the area, Calhoun plays a crucial role in regulating water flow and storage, contributing to the overall conservation and management of water resources in Richland, Wisconsin.