Dd No 3-34, located in Ottawa, Kansas, is a flood risk reduction dam designed by USDA NRCS in 1984. The dam is primarily owned by the local government and serves the purpose of flood risk reduction for the Sand Creek-TR river/stream. With a height of 24.9 feet and a length of 720 feet, Dd No 3-34 has a storage capacity of 193.5 acre-feet and covers a surface area of 6.5 acres, with a drainage area of 0.46 square miles.

Although classified as having a low hazard potential, the condition of Dd No 3-34 is currently not rated. The dam features an uncontrolled spillway with a width of 30 feet and does not have outlet gates. The risk assessment for this dam is moderate (3), indicating the need for ongoing monitoring and potential risk management measures. While the dam does not fall under the jurisdiction of state regulatory agencies, it is important to ensure that proper maintenance and inspections are conducted to uphold its integrity and functionality in mitigating flood risks for the surrounding area.