A U.S. Geological Survey map published in 1972 explicitly details expansive soil conditions in Rapid City. The soil conditions are part of a shale formation that in South Dakota continues east ...

One homeowner, 64-year-old Joe Engelhardt, said he was told his $265,000 home had an estimated $100,000 in damage caused by expansive soils, just three years after it was finished.

RAPID CITY, S.D. (AP) - Contractors building homes in Rapid City could soon be required to test soil conditions at building sites after homeowners complained of severe damage caused by expansive ...

The South Dakota Soil Health Coalition will hold its annual Soil Health Conference Jan. 23 to 24 in Rapid City. HPJ Live Event; ... Jan. 23 to 24 at the Best Western Ramkota Hotel in Rapid City.

The Rapid City Journal reports the revisions in that city became effective in March. A FEMA official estimates the changes will save residents about $20,000 annually in flood insurance premiums.