Thompson Dam 3519, located in Furnas, Nebraska, is a privately owned earth dam constructed in 1960 for flood risk reduction along TR- Sappa Creek. Standing at a height of 26.8 feet and a length of 300 feet, this dam provides storage capacity of 28.4 acre-feet and serves a drainage area of 0.14 square miles. Despite its structural integrity being deemed poor as of the last inspection in March 2017, the dam's hazard potential is categorized as low.

Managed by the Nebraska Department of Natural Resources (NE DNR), Thompson Dam 3519 is subject to state regulations, with provisions for permitting, inspection, and enforcement in place. Although no associated structures or federal agency involvement have been reported, the dam remains an essential asset for flood control in the region. With a primary purpose of flood risk reduction, the dam plays a crucial role in protecting the surrounding area from potential inundation and damage during periods of heavy precipitation.

As a strategic infrastructure within Congressional District 03, Nebraska, Thompson Dam 3519 contributes to the overall environmental resilience and water resource management efforts in the state. While the dam's condition assessment indicates the need for improvement, its historical significance and functional importance underscore the ongoing need for monitoring, maintenance, and potential rehabilitation to ensure its continued effectiveness in safeguarding the local community and environment from flood hazards.