A Homeowner's Guide to Landslides http://file.dnr.wa.gov/publications/ger_homeowners_guide_landslides.pdf

Washington Department of Natural Resources http://www.dnr.wa.gov/geologyportal

Washington Department of Ecology http://www.ecy.wa.gov/index.html

Fema - Elevation Certificates, Flood Insurance information  www.fema.gov\national-flood-insurance-program