Dd No 81, located in Pottawatomie County, Kansas, is a local government-owned earth dam constructed in 1980 by the USDA NRCS for the primary purpose of flood risk reduction along Pleasant Run Creek. With a height of 35 feet and a length of 800 feet, this dam has a storage capacity of 251 acre-feet and covers a surface area of 7.4 acres. Despite being uncontrolled, the dam has a spillway width of 50 feet to manage a maximum discharge of 1790 cfs.

Managed by the Kansas Dept. of Agriculture, Dd No 81 is subject to state regulations, permitting, inspection, and enforcement. While the dam is classified as having a low hazard potential, it is rated as being in moderate risk (3) due to its condition assessment being unrated. The dam has not been evaluated for emergency action planning, but its risk management measures are currently unspecified. Given its importance in flood risk reduction, water resource and climate enthusiasts may find Dd No 81's design and operation by the Natural Resources Conservation Service to be of interest.