Jason Toft: The impacts of armoring on Salish Sea shorelines

Shoreline monitoring toolbox

Shoreline Armoring Impacts and Beach Restoration Effectiveness Vary with Elevation

View the presentation here.

Results of their work, comparing shorelines.

North, Central and South Sound are consistent in term of their width and shade, but lose these characteristics with armoring.

Unarmored beaches have more organic debris, like logs. Show how well beaches are functioning.

Invertebrates: there are fewer invertebrates with armored shorelines, but there are large regional differences.

Combined data from across 130 shorelines.

In low armored shorelines, they found more sandy habitats, and in armored shorelines, more coarse and rocky shorelines.

2016 field season included recently restored sites with armored and non-armored reference beaches.

Will it work? When do you we know if we’re making a difference?


Can you look at where armoring is on the drift cell? They did not look at that. His guess is that if it was on a feeder bluff, it would have more impact than not.

Rail associated armoring, what are the possibilities of restoration? You aren’t going to move the railroad tracks,  but you can remove the riprap and regrade the beach.


Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.