The Larry Holmolka Dam in Swanton, Nebraska, is a privately owned earth dam designed by USDA NRCS and completed in 2001. It serves the primary purpose of flood risk reduction along the Walnut Grove Creek, with a height of 19 feet and a length of 676 feet. The dam has a storage capacity of 224 acre-feet and a drainage area of 0.9 square miles, with a maximum discharge of 120 cubic feet per second.

Located in Saline County, the dam is regulated by the Nebraska Department of Natural Resources and undergoes regular inspections to ensure its structural integrity. Despite being classified as having a low hazard potential, the Larry Holmolka Dam is in satisfactory condition as of the last assessment in May 2017. With its effective flood risk reduction measures and adherence to state regulations, the dam plays a crucial role in protecting the surrounding area from potential inundation events.

Managed by the Natural Resources Conservation Service, the Larry Holmolka Dam has not undergone any significant modifications since its completion. With its satisfactory condition and low hazard potential, the dam provides peace of mind to residents in the region while serving as a vital infrastructure for water resource management in the area.