Gs Dd No E-33 is a local government-owned Earth dam located in Perry, Kansas, along the Rock Creek Delaware River. Built in 1985 by designer firm Speaker & King, this dam serves the primary purpose of flood risk reduction with a height of 24 feet and a length of 485 feet. With a storage capacity of 120.1 acre-feet, the dam covers a surface area of 4.78 acres and has a drainage area of 0.3 square miles.

Despite being classified as having a low hazard potential, the dam is considered to have a moderate risk level, rated at 3 out of 5. Although it is not currently regulated or inspected by the state, Gs Dd No E-33 is in operation and has not undergone any recent modifications. With a maximum discharge capacity of 1418 cubic feet per second, the dam's spillway type is uncontrolled with a width of 83 feet. The condition assessment remains unrated, and an emergency action plan has not been prepared as of the latest data update in July 2018.

Overall, Gs Dd No E-33 stands as a vital infrastructure for flood risk reduction in Jefferson County, Kansas. As water resource and climate enthusiasts, understanding the design and function of such dams is crucial in managing and mitigating potential risks associated with extreme weather events and ensuring the safety and resilience of communities along waterways like the Rock Creek Delaware River.