Shore or Inland

Shore means the feature is shoreline or mean high water according to NOAA.

Inland is the case when the feature is a high mark for storm events or if the structure is the limit

Hard or Medium or Soft Texture

Is an estimate of structure resiliency to waves. It is soft if the structure moves, hard if it doesn’t and medium if it is in between.

Natural

Natural is when the structure is of natural material or origin.