Gsd No B-11 (Gc 3) is a flood risk reduction dam located in Muscotah, Kansas along the Little Grasshopper Creek-TR. Built in 1987 by the USDA NRCS, this earth dam stands at a height of 32.5 feet and has a storage capacity of 295 acre-feet. With a primary purpose of flood risk reduction, the dam also serves for debris control in the area, providing essential protection to the community.

Managed by the Kansas Department of Agriculture, Gsd No B-11 (Gc 3) is regulated, permitted, inspected, and enforced by state agencies to ensure its safe operation and maintenance. The dam has a low hazard potential and is categorized as having a moderate risk assessment level. Although the condition assessment is currently not rated, the dam meets guidelines for emergency action plans and risk management measures are in place to mitigate potential risks.

Located in Atchison County, Kansas, Gsd No B-11 (Gc 3) plays a vital role in safeguarding the surrounding area from flooding events. With its strategic placement and effective design, the dam contributes to the resilience of the local ecosystem and community, showcasing the importance of water resource management in addressing climate challenges.