Tamarac Lake Outlet is a gravity dam located in Polk, Minnesota, designed by the county and completed in 1930. The dam stands at 10 feet high, with a structural height of 7 feet and a length of 20 feet. It serves as a crucial structure for regulating water flow from Badger Creek, with a drainage area of 14.3 square miles and a maximum discharge capacity of 100 cubic feet per second.

The dam has a low hazard potential and is in satisfactory condition as of the last assessment in May 2009. It has a normal storage capacity of 2314 acre-feet and a maximum storage capacity of 3026 acre-feet, covering a surface area of 356 acres. The outlet is state-regulated and subject to inspection, permitting, and enforcement by the Minnesota Department of Natural Resources, ensuring its safe operation and compliance with regulations.

Despite its moderate risk assessment rating, Tamarac Lake Outlet plays a vital role in water resource management in the region. With its controlled spillway and uncontrolled spillway type, the dam provides essential flood control and water storage capabilities. Its location in Erskine, Minnesota, underlines its importance in maintaining the ecological balance of the area and highlights the collaborative efforts between local government and state agencies in ensuring the sustainability of water resources and climate resilience.