Point Grenville | MARINe

Point Grenville

Click here for Long-Term trends

Click here for Biodiversity Survey findings

Point Grenville is located in the Olympic Coast Region of Washington and is accessed by permission of the Quinault Indian Nation. This gently sloping site consists of extremely uneven terrain, containing many deep cracks and folds.


Point Grenville is dominated by consolidated bedrock, and the area surrounding the site is comprised of a mixture of consolidated bedrock, boulder fields, and sandy beach. The primary coastal orientation of this site is north.

Point Grenville long-term monitoring overview

Long-Term Monitoring Surveys at Point Grenville were established in 2008, and are done by Olympic Coast National Marine Sanctuary. Long-Term monitoring surveys currently target the following species: Chthamalus/Balanus (Acorn Barnacles), Mytilus (California Mussel), Phyllospadix (Surfgrass), and Pisaster (Ochre Star). Click here to view Long-Term trends at this site.

Biodiversity Surveys were done in 2022. The Biodiversity Survey grid encompasses 1 section that is approximately 30 meters (along shore) x 50 meters (seaward).

For more information about Point Grenville, please contact Jenny Waddell (jenny.waddell@noaa.gov).