• 20-inch products pipeline runs parallel to a railroad track in Imperial County, California. Both the pipeline and the railroad are crossed by the 250-foot wide Mammoth Wash. Flash floods caused lateral migration and eroded 3 to 6 feet of the right-descending bank.

  • A 15-foot deep erosion rill had formed in an unnamed wash due to storm water flows, exposing one of four natural gas pipelines in the area. If left uncovered and unprotected, the pipeline risked further exposure and potential damage due to continued erosion.