Helwig is a privately owned dam located in Buffalo, Wisconsin, along the TR Buffalo River. Built in 1976 by the USDA NRCS, this earth dam stands at a height of 28 feet and stretches 400 feet in length, providing essential functions for fire protection, stock, and small fish pond purposes. The dam has a storage capacity of 20 acre-feet and a maximum discharge of 47 cubic feet per second, with a low hazard potential and a moderate risk assessment rating.

Despite being under state jurisdiction and regulation by WIDNR, Helwig has not been rated for its condition assessment and lacks an Emergency Action Plan (EAP) as of the last inspection in 2010. The dam is regularly inspected every 10 years, with a risk management plan yet to be implemented. With its uncontrolled spillway type and limited surface area, Helwig serves as a crucial water resource structure in the region, highlighting the importance of proper maintenance and risk assessment for climate enthusiasts and water resource management professionals.

As a part of the Detroit District's water infrastructure, Helwig provides vital support for local water management efforts in Wisconsin. With its primary purpose focused on safeguarding against fire hazards and supporting aquatic ecosystems, the dam plays a key role in maintaining the resilience of the surrounding environment. Continued monitoring and maintenance of Helwig are essential to ensure its long-term functionality and safety, emphasizing the need for ongoing collaboration between private owners, state agencies, and conservation organizations to protect and preserve this valuable water resource.