Nelson, a private water resource in Latah, Idaho, serves as a vital irrigation source with a dam height of 16.5 feet and a storage capacity of 65 acre-feet. Built in 1907 on an unnamed stream known as Big Bear Creek, Nelson's primary purpose is to support agricultural activities in the area. The dam, made of earth and stone, has a controlled spillway and a low hazard potential, with a satisfactory condition assessment as of 2008.

Located in the Seattle District of Idaho, Nelson is regulated by the Idaho Department of Water Resources, with state permitting, inspection, and enforcement measures in place. Despite its age, the dam continues to provide reliable water storage for the surrounding area, with a drainage area of 0.1 square miles and a maximum discharge of 3 cubic feet per second. While the risk assessment indicates a very high risk level, the dam's risk management measures and emergency action plan status remain undisclosed, warranting further evaluation to ensure the safety and sustainability of this essential water resource.