Guideline 5 – Reducing Erosion & Landslides

Most shoreline and bluff landowners are keenly aware of the problems that can occur from erosion and landslides. We’ve all seen media coverage of a home teetering on the edge of a bluff, lives lost in a mudslide, and floods sweeping entire neighborhoods away. This guideline will give you a better understanding of how water moves and how erosion occurs, as well as what steps you can take to reduce risks.

Words to Know:
Bulkheads: manmade structures constructed along shorelines to control beach erosion.
Seawalls: hard engineered structure of considerable length, built parallel to the shore to prevent erosion from wave action.
Riprap: a sustaining wall of stones or chunks of concrete piled together to prevent erosion from wave action.
Littoral Drift: the process by which beach sediment is moved along the shoreline.
Forage Fish: small fish which are preyed on by larger predators for food. (surf smelt, Pacific herring, Pacific sand lance)
Soft shore protection: natural shoreline protection, including vegetation and drift logs, as an alternative to bulkheads, seawalls and riprap.
Tightline: tightline (a closed pipe) that carries water to a safe point below the slope.

In this Guideline: