Bad Axe 11, also known as Duck Egg, is a vital flood risk reduction structure located in Newton, Vernon County, Wisconsin. Constructed in 1987 by the USDA NRCS, this earth dam stands at a height of 70 feet and spans a length of 1100 feet. With a storage capacity of 4350 acre-feet and the ability to handle a maximum discharge of 14830 cubic feet per second, Bad Axe 11 plays a crucial role in managing water flow in the Springville Branch of the Bad Axe River.

Managed by the WIDNR and subject to state jurisdiction, Bad Axe 11 has been assessed to have a low hazard potential and satisfactory condition. The dam's uncontrolled spillway, with a width of 104 feet, helps regulate water levels during periods of high flow. Despite its low risk, the structure is subject to regular inspections every 10 years to ensure its continued effectiveness in flood risk reduction. With its location in a moderate risk area, Bad Axe 11 serves as a key component of the region's water resource management infrastructure.

Representing a collaboration between local government agencies and the USDA NRCS, Bad Axe 11 exemplifies the importance of strategic dam construction in protecting communities from the impacts of extreme weather events and climate change. Its presence in the St. Paul District underscores the interconnected nature of water resource management and the need for proactive measures to mitigate flood risks. For water resource and climate enthusiasts, Bad Axe 11 stands as a notable example of effective infrastructure design and management in response to evolving environmental challenges.