Cow Creek 3 is a private dam located in Brewster, Cherry County, Nebraska, designed by USDA NRCS and completed in 1998 for flood risk reduction. It stands at a height of 20 feet with a dam length of 1075 feet, providing a storage capacity of 75 acre-feet. The dam, primarily made of earth and stone materials, has a low hazard potential and is in satisfactory condition as of the last inspection in July 2020.

Managed by the Nebraska Department of Natural Resources, Cow Creek 3 is regulated, permitted, inspected, and enforced by state agencies to ensure its safety and compliance with regulations. Situated on the Cow Creek stream, the dam serves multiple purposes including flood risk reduction, contributing to a drainage area of 13.2 square miles. The structure's location in a rural area with a normal storage capacity of 23 acre-feet highlights its importance in managing water resources and mitigating potential risks in the region.

With a focus on maintaining public safety and managing water resources effectively, Cow Creek 3 plays a crucial role in the local ecosystem and community resilience. Its design, construction, and regulatory oversight reflect a commitment to sustainable water management practices, making it a significant asset in the region's efforts to adapt to changing climate conditions and ensure the safety of residents and infrastructure along the Cow Creek watershed.