Box Elder Canyon, Canyon in Box Elder County, Utah

Box Elder Canyon cuts through the western slopes of the Wellsville Mountains in Box Elder County, Utah. U.S. Routes 89 and 91 run through it, entering the canyon 2 miles east of downtown Brigham City. Box Elder Creek also flows through the canyon, westward from Mantua Reservoir, which was created in 1961 by an earthen-fill dam at the upper mouth of the canyon near the farming community of Mantua.

The canyon served as a natural passage through the Wellsville Mountains before modern highways like US Route 89 and 91 were constructed. The valley had long been an important path for travelers and traders in the region.

Locals often call both Box Elder Canyon and neighbouring Wellsville Canyon "Sardine Canyon", though the real Sardine Canyon follows an old highway alignment on the eastern slope. The farming community of Mantua, at the upper mouth beside the reservoir, is pronounced "man-uh-way".

The area offers hiking and stream fishing year-round with trails of varying difficulty. Visitors should prepare for changing weather conditions and wear sturdy footwear.

Locals often call both Box Elder Canyon and neighbouring Wellsville Canyon "Sardine Canyon", but the real Sardine Canyon follows an old highway alignment on the eastern slope of the Wellsville Mountains. The combined US 89/US 91 route climbs from the canyon mouth to Sardine Summit at 5,981 feet (1,823 m).