Arehart Dam, located in Alma, Nebraska, is a privately owned structure designed by the USDA NRCS for flood risk reduction along the TR-ELM CREEK. Completed in 1995, this earth dam stands at 28 feet high with a structural height of 33 feet and a length of 358 feet. It has a storage capacity of 150 acre-feet, with a normal storage level of 20 acre-feet, serving a drainage area of 1.6 square miles.

With a low hazard potential and fair condition assessment, Arehart Dam is regulated by the Nebraska Department of Natural Resources, which oversees its permitting, inspections, and enforcement. The dam has a maximum discharge capacity of 288 cubic feet per second, and its primary purpose is flood risk reduction. Despite its modest surface area of 7 acres, Arehart Dam plays a crucial role in protecting the surrounding community from potential flooding events, highlighting the importance of effective water resource management in the region.

As an essential infrastructure in Phelps County, Nebraska, Arehart Dam is part of the larger network of flood control measures in the area. Its strategic location, design, and operational oversight by the NE DNR ensure that it continues to serve its purpose effectively. With its modest size and capacity, Arehart Dam showcases the practicality and efficiency of earth dams in mitigating flood risks and safeguarding communities against water-related disasters in the region.