20250828 09090300 1.0 TRUE CMECS_Substrate This layer is a polygon file containing CMECS Substrate Component classes for Oregon Estuaries. Substrate is defined in CMECS as “the non-living materials that form an aquatic bottom or seafloor, or that provide a surface (e.g., floating objects, buoys) for growth of attached biota. Substrate may be composed of any substance, natural or manmade”.There are three primary CMECS substrate types: Biogenic, Geologic, and Anthropogenic. This work was funded by NOAA via a CZMA section 309 "Project of Special Merit" grant.