Mantua is a local government-owned structure in Box Elder, Utah, with a primary purpose of irrigation. Completed in 1961, this earth dam on Big Creek has a hydraulic height of 24 feet and a structural height of 29 feet. The reservoir has a storage capacity of 10,450 acre-feet, with a normal storage level of 7,560 acre-feet and a drainage area of 9 square miles.

Managed by the Utah Division of Water Rights, Mantua is regulated, permitted, inspected, and enforced by the state. The dam has a high hazard potential but is currently in satisfactory condition, according to the last inspection in May 2020. Although there are no associated structures or federal agency involvement, Mantua plays a crucial role in providing water for irrigation purposes in the region.

Located in the city of Mantua, this dam is situated in a picturesque setting, surrounded by natural beauty. With its important role in water resource management and climate resilience, Mantua serves as a vital infrastructure for supporting agricultural activities in the area. Enthusiasts interested in water resources and climate change will find Mantua to be an intriguing case study of dam infrastructure in the state of Utah.