Jensen, located in Polk, Wisconsin, is a privately owned earth dam completed in 1963 by the USDA NRCS for fire protection, stock, and small fish pond purposes. This dam stands at 16 feet high with a hydraulic height of 11 feet and a length of 270 feet, providing a storage capacity of 72 acre-feet. Situated along Maple Valley Creek, Jensen serves as a crucial resource for water management and recreational activities in the area.

Despite being categorized with a low hazard potential, Jensen poses a very high risk due to its condition not being rated since its last inspection in 2010. The dam's emergency action plan status, risk assessment, and inundation maps are all currently unknown, raising concerns for the surrounding community's safety. As a state-regulated structure under the oversight of WIDNR, Jensen requires regular inspection and maintenance to ensure its structural integrity and functionality are up to standard.

With its strategic location and historical significance in water resource management, Jensen serves as a vital asset for the local ecosystem and community. To mitigate risks and enhance its resilience to climate impacts, continued monitoring, and investment in maintenance and emergency preparedness measures are essential. By upholding regulatory standards and implementing risk management strategies, Jensen can continue to fulfill its role in safeguarding water resources and supporting sustainable development in the region.