Theresa Marsh, located in Dodge, Wisconsin, is a state-regulated dam on the East Branch of the Rock River. Completed in 1968 for recreational purposes, this earth dam stands at 10 feet high and spans 5300 feet in length. With a normal storage capacity of 2500 acre-feet and a maximum discharge of 8250 cubic feet per second, Theresa Marsh serves as a vital resource for water management and outdoor activities in the area.

Although assessed as being in fair condition during the last inspection in December 2017, Theresa Marsh has a low hazard potential and is monitored by the Wisconsin Department of Natural Resources (WIDNR). The dam undergoes inspections every 10 years to ensure its safety and functionality. Despite its low hazard potential, the risk assessment for Theresa Marsh is very high, indicating the importance of proper risk management measures to mitigate any potential issues.

Theresa Marsh's location in a high-risk area highlights the need for continued monitoring and maintenance to safeguard the surrounding communities and environment. With its significant storage capacity and recreational value, this dam plays a crucial role in water resource management and climate resilience efforts in the region.