Dd No 27-29 (Hennigan) is a local government-owned earth dam located in Muscotah, Kansas, along the Cedar Creek Delaware River. Built in 1981 by SPEAKER & KING, this dam serves the primary purpose of flood risk reduction in the area. With a height of 29 feet and a length of 650 feet, the dam has a maximum storage capacity of 109.8 acre-feet and a normal storage capacity of 27 acre-feet, covering a surface area of 4.25 acres.

Although categorized as having a low hazard potential and being in moderate risk (3), Dd No 27-29 is currently not rated for its condition assessment. The dam features an uncontrolled spillway with a width of 88 feet and does not have any outlet gates. It is important to note that there have been no recent inspections or assessments conducted on this dam, raising concerns about its current safety and functionality in managing flood risks in the region. As a key infrastructure for flood protection, regular monitoring and maintenance of Dd No 27-29 are crucial to ensure its continued effectiveness in safeguarding the community from potential water-related disasters.