A 50-foot wide pipeline right-of-way has one 30-inch natural gas pipeline that crosses Las Huertas Creek, Arroyo Channel, in Sandoval County, New Mexico. The Arroyo Channel had fairly steep banks composed of clay, sand, gravel, and rock and the pipeline had limited ground cover over an 1100-foot section.
A 14-inch products pipeline runs parallel to an interstate in San Bernardino County, California. A nearby river has meandered towards the pipeline. Significant rainfall and run-off water have eroded the bank and undercut the pipeline, leaving the line exposed for 60 feet at a height of 17 feet.