Grass Valley is a privately owned dam located in Central, Washington County, Utah, along the Grass Valley Creek. Built in 1917 for the primary purpose of flood risk reduction, this earth dam stands at a structural height of 75 feet with a hydraulic height of 65 feet. It has a storage capacity of 13,333 acre-feet and serves to protect the surrounding area from potential flooding events.

Managed by the Utah Division of Water Rights, Grass Valley Dam is regulated, inspected, and enforced by state agencies to ensure its safety and functionality. With a significant hazard potential, this dam plays a crucial role in mitigating flood risks in the region. While its condition assessment is currently not rated, regular inspections are conducted to monitor its performance and address any potential issues that may arise.

For water resource and climate enthusiasts, Grass Valley Dam represents a vital infrastructure that contributes to the overall water management and flood control efforts in Utah. With a rich history dating back over a century, this dam continues to serve its purpose of protecting communities and safeguarding water resources in the area.