Dam No 3, also known as Sugar Valley Dam No 3, is a privately owned earth dam located in Linn, Kansas. This dam serves primarily for recreational purposes and stands at a height of 38 feet with a structural height of 42 feet. With a maximum storage capacity of 140 acre-feet and a normal storage of 77 acre-feet, Dam No 3 covers a surface area of 7.1 acres.

Managed by the Kansas Department of Agriculture, Dam No 3 has a spillway width of 20 feet and a maximum discharge capacity of 676 cubic feet per second. Despite its fair condition assessment, the dam is classified as having a high hazard potential due to its proximity to populated areas. While the risk assessment is moderate, routine inspections are conducted every three years to ensure the safety of the structure and its surroundings.

Water resource and climate enthusiasts will find Dam No 3 an intriguing site for its unique design, purpose, and regulatory oversight. The dam's location along Mine Creek-TR in Worland, Missouri, offers a picturesque setting for outdoor recreation and serves as a vital component of the local water management system. As efforts continue to mitigate potential risks and enhance emergency preparedness, Dam No 3 remains a focal point for sustainable water resource management in the region.