Marking is a privately-owned earth dam located in Sauk, Wisconsin, along the TR-DELL CREEK river. Built in 1975 by the USDA NRCS, this dam stands at a height of 11 feet and has a length of 1150 feet, providing a storage capacity of 120 acre-feet. With a low hazard potential and fair condition assessment, Marking has a controlled spillway and a maximum discharge of 30 cubic feet per second.

Despite its relatively low hazard potential, Marking is subject to state regulation and enforcement, with inspections conducted every 10 years by the WIDNR. The risk assessment for this dam is classified as very high, indicating the importance of effective risk management measures. While the dam meets state permitting and inspection requirements, there is room for improvement in emergency action plan preparation and adherence to guidelines.

For water resource and climate enthusiasts, Marking serves as a noteworthy example of dam infrastructure in Wisconsin that plays a crucial role in water storage and flood control. With its historical significance and ongoing regulatory oversight, this structure highlights the intersection of human engineering and natural resource management in safeguarding communities and ecosystems against potential risks.