Dd No 143, also known as Wet Walnut Watershed Dam No 143, is a local government-owned structure located in Ness, Kansas. Built in 1975 by the USDA NRCS, this earth-type dam serves the primary purpose of flood risk reduction along the South Fork Walnut Creek-TR. With a height of 38 feet and a hydraulic height of 29 feet, Dd No 143 has a normal storage capacity of 32.6 acre-feet and a maximum storage of 458.4 acre-feet, covering a surface area of 6.46 acres.

Managed by the Kansas Dept. of Agriculture, Dd No 143 is state-regulated and inspected for compliance. Despite being classified as having a low hazard potential, the dam is rated as not assessed for its condition. With a moderate risk level assigned, the structure does not have an Emergency Action Plan in place and the risk management measures are not specified. The dam's uncontrolled spillway, with a width of 100 feet, ensures proper water discharge during high flow events, contributing to the overall safety and functionality of the dam for the surrounding area.

Water resource and climate enthusiasts will appreciate the detailed information available for Dd No 143, providing insights into its design, construction, and regulatory oversight. As part of the flood risk reduction infrastructure in Ness, Kansas, this dam plays a crucial role in protecting the local community from potential flooding events. With its historic completion in 1975 and ongoing state-regulated inspections, Dd No 143 stands as a testament to the importance of effective water resource management in mitigating natural hazards and ensuring public safety.