Blanding City No. 4 is a crucial water resource infrastructure owned by the local government in San Juan, Utah. This dam, completed in 1965, serves the primary purpose of water supply and is regulated by the Utah Division of Water Rights. Situated on Westwater Creek, this earth-type dam stands at a structural height of 100 feet and has a hydraulic height of 96 feet, providing a storage capacity of 2,779 acre-feet with a normal storage of 2,442 acre-feet.

With a high hazard potential, Blanding City No. 4 has been assessed as satisfactory in condition, last inspected in September 2020. The dam features a spillway width of 6 feet and a length of 2,057 feet, ensuring effective water management in the region. Located in a drainage area that ultimately drains to the Cotto River, this infrastructure plays a vital role in ensuring water availability for the surrounding community, highlighting the importance of its maintenance and regulatory oversight to mitigate potential risks and ensure continued functionality.

Given its critical role in water supply, Blanding City No. 4 serves as a key component in the local water infrastructure network, contributing to the overall water resource management in the region. As climate change impacts continue to affect water availability and quality, the sustainable operation and maintenance of such infrastructure are essential to safeguarding water resources for future generations. By adhering to inspection, enforcement, and emergency preparedness protocols, this dam can continue to fulfill its primary purpose of providing a reliable water supply to the community while effectively managing potential risks and ensuring public safety.