Herman-Sadlier is a private Earth dam located in Uintah, Utah, along the Ashley Creek. Built in 1963 by the USDA NRCS, this dam serves the primary purpose of irrigation and is regulated by the Utah Division of Water Rights. With a hydraulic height of 25 feet and a structural height of 28 feet, Herman-Sadlier has a storage capacity of 76 acre-feet, with a normal storage of 60 acre-feet. The dam spans 780 feet in length and covers a drainage area of 1.9 square miles.

Despite its age, Herman-Sadlier has a low hazard potential and has not been rated for its condition. The dam was last inspected in July 2016 and is scheduled for inspection every five years. Emergency preparedness measures such as an Emergency Action Plan (EAP) and inundation maps are not currently in place for this structure. With its location in a critical water resource area and its importance for irrigation in the region, continued monitoring and maintenance of Herman-Sadlier are essential for the safety and sustainability of water resources in the surrounding area.

In the hands of private owners, Herman-Sadlier stands as a testament to the collaboration between federal and state agencies in managing water resources for agricultural purposes. With its historical significance and ongoing role in supporting local irrigation needs, this dam serves as a vital piece of infrastructure that requires continued attention and investment to ensure its functionality and safety for the community it serves.