Lost Creek State Park is a Utah state park in northeastern Morgan County centered on Lost Creek Reservoir, northeast of Henefer and Croydon. Created by legislation in March 2021 alongside Utahraptor State Park, it had appeared on maps much earlier, suggesting either an earlier designation or long-standing plans for development. By September 2021, the area remained extremely primitive and was still taking shape as a formal recreation site. Facilities were limited to basic amenities such as vault toilets and a concrete boat ramp, while planned additions included campgrounds, restrooms, an entrance, and trailheads. Its significance lies in this transition toward more structured public use.