Blue Creek Valley is an 18-mile (29 km) long valley located in northeast Box Elder County, Utah. It is endorheic with the Blue Creek Reservoir its lowpoint located south in the valley's center. The valley is nestled between three mountainous regions. The West Hills and Blue Spring Hills border it east and southeast. The south abuts the north of the Promontory Mountains, and the west is formed by a small north-south range, the North Promontory Mountains The north of the valley borders the south of Idaho's Pocatello Valley.