Gs Dd No 25-21 is a local government-owned dam located in Netawaka, Kansas, along the Plum Creek-Tr river. Built in 1994, this earth dam stands at a height of 24.9 feet and has a length of 650 feet. With a primary purpose of flood risk reduction, it also serves the purposes of debris control and has a normal storage capacity of 47.1 acre-feet.

The dam has a low hazard potential and a moderate risk assessment rating of 3 out of 5. While it has not been rated for its condition, it is regularly inspected with the last inspection conducted in January 1995. The dam does not have an emergency action plan in place, but it meets regulatory guidelines and has not experienced any significant modifications since its completion.

Located in Brown County, Kansas, Gs Dd No 25-21 provides important flood protection for the surrounding area. With its controlled spillway and uncontrolled design, the dam plays a crucial role in managing water levels and reducing the risk of flooding in the region. Overall, this dam serves as a key infrastructure for water resource management in the local community.