Located in Decorah, Iowa, the Henningsgaard Dam is a privately owned structure that serves multiple purposes including fire protection, stock maintenance, and a small fish pond. Constructed in 2002 by the NRCS, this earth dam stands at a height of 30 feet and spans a length of 453 feet. With a storage capacity of 203 acre-feet and a normal storage level of 50 acre-feet, the dam covers a surface area of 8.8 acres and drains a 1.89 square mile watershed.

Situated along the TR- UPPER IOWA RIVER, the Henningsgaard Dam is regulated by the Iowa Department of Natural Resources and undergoes regular inspections and enforcement to ensure its safety and compliance. With a low hazard potential and a moderate risk assessment rating, the dam poses minimal risk to the surrounding area. Despite being uncontrolled, the spillway width of 3 feet helps manage water flow during peak periods. Overall, the Henningsgaard Dam stands as an essential resource for water management and conservation in Winneshiek County, Iowa.

With its strategic location and multi-purpose functionality, the Henningsgaard Dam plays a crucial role in maintaining water resources and supporting local ecosystems in the region. As a testament to effective engineering and management practices, this structure exemplifies the importance of sustainable infrastructure development in the face of changing climate patterns and increasing water demands. As water resource and climate enthusiasts continue to advocate for responsible stewardship of natural resources, the Henningsgaard Dam stands as a model for effective water management practices in the state of Iowa.