Gs Dd No C-42 (Elk 23) is a local government-owned earth dam located in Jackson, Kansas, designed by the Soil Conservation Service of USDA NRCS. This dam, with a height of 34.3 feet and a length of 850 feet, serves the primary purpose of debris control on Elk Creek. It has a normal storage capacity of 68 acre-feet and a maximum discharge rate of 1522 cubic feet per second, making it a crucial structure for managing water resources in the area.

Although categorized as having a low hazard potential and a moderate risk assessment, Gs Dd No C-42 (Elk 23) is not currently rated for its condition. The dam does not have outlet gates and features an uncontrolled spillway with a width of 40 feet. While it has not been inspected recently and lacks an Emergency Action Plan (EAP), the dam remains under state regulation and jurisdiction, with permitting, inspection, and enforcement processes in place. Overall, this dam plays a vital role in debris control and water management in the region, highlighting the importance of monitoring and maintaining such critical infrastructure for climate and water resource enthusiasts.