A portion of the Santa Clara Heights near Truman Drive has grappled with the danger of sliding land for over 30 years and despite numerous efforts by the City of Santa Clara to stop it, there is still no solution in sight.
Geologic history and cause
The Santa Clara Heights is built upon the Santa Clara Bench, a natural plateau bordered by the Santa Clara River Valley to the southwest and a small tributary stream to the northeast. Like most of Southern Utah, the soil of the Santa Clara Bench is mainly composed of petrified forest member, commonly called “blue clay,” along with sediment from the Santa Clara River. Petrified forest member is a weak rock that swells quickly and moves easily when wet.