Gs Dd No 101 (P. Mcnary) is a local government-owned dam in Nemaha, Kansas, designed by USDA NRCS and regulated by the Kansas Department of Agriculture. Completed in 1980, this earth dam stands at a height of 30 feet and stretches 800 feet in length, serving primarily for flood risk reduction along the Pony Creek-TR river or stream. With a storage capacity of 126.2 acre-feet and a surface area of 4.2 acres, this structure plays a crucial role in debris control and flood risk mitigation in the region.

Despite being classified as having a low hazard potential, Gs Dd No 101 (P. Mcnary) is considered to have a moderate risk level. The dam lacks outlet gates and has an uncontrolled spillway with a width of 60 feet. While not currently rated for its condition, the dam has not undergone recent inspections, and its emergency action plan status is unknown. With a drainage area of 0.26 square miles, the dam's purpose of flood risk reduction is essential for protecting the surrounding areas from potential inundation during periods of heightened water flow.

Located in the city of Nebraska within Nemaha County, Kansas, Gs Dd No 101 (P. Mcnary) is under the jurisdiction of the Kansas Department of Agriculture and falls within the Kansas City District of the US Army Corps of Engineers. As water resource and climate enthusiasts, understanding the design, purpose, and condition of this dam is vital for evaluating its role in managing water flow and minimizing flood risks in the region.