Gs Dd No 1-11a (Wegener) is a dam located in Brown County, Kansas, along Roy's Creek. Constructed in 1986 by the designers Speaker & King, this earth dam stands at a height of 42 feet and has a length of 540 feet. Its primary purpose is flood risk reduction, with a normal storage capacity of 32.5 acre-feet and a maximum discharge of 1436 cubic feet per second.

Managed and regulated by the Kansas Department of Agriculture, this dam is state-jurisdictioned and state-permitted, with state inspections and enforcement in place. Despite its low hazard potential, the dam has been assigned a moderate risk assessment of 3, indicating the need for ongoing risk management measures. The dam is equipped with an uncontrolled spillway and is surrounded by a surface area of 2.7 acres, serving as a vital infrastructure for flood protection in the region.

Overall, Gs Dd No 1-11a (Wegener) plays a crucial role in mitigating flood risks for the local community in Brown County, Kansas. As water resource and climate enthusiasts, understanding the design, capacity, and regulatory oversight of this dam provides valuable insight into the resilience of our water infrastructure and the measures in place to ensure public safety in the face of potential flooding events.