Coastal Landslide Hazards Maps
Read the map sidebar (pdf).
Read the map explanation (pdf).
Tips for reading landslide hazard maps
List of ONLINE landslide hazard maps
Digital coastal bluff hazards data
What are coastal landslide hazards?Sea level is gradually rising along the coast of Maine. This rise in the ocean allows waves to erode beaches and flats at the base of coastal bluffs. Over time, erosion removes material from the base of a coastal bluff and steepens the face of the bluff. Sediments at the base of the bluff stabilize it, and when they are removed, the bluff is no longer in equilibrium. Only the strength of the material within the bluff holds the bluff in place. Continued erosion or lubrication of the bluff materials by ground water may overcome this internal resistance, particularly in clay bluffs, and result in a landslide. The map sidebar (pdf) contains additional information describing coastal landslide hazards.
Coastal Landslide Hazards MapsCoastal Landslide Hazards Maps show locations of known landslides and areas of potential landslide hazard on bluffs along the Maine coast. The explanation describes factors influencing landslide risk. For more information, read the map explanation (pdf) or link to our tips for reading landslide hazard maps.
Uses of coastal landslide hazard informationThis map provides an introduction to understanding landslide risk and guidance on what steps to take if the risk of a landslide is a concern in a particular coastal area. Landslides can occur in high coastal bluffs composed of muddy sediment. This landslide hazards map describes the internal stability of sediment bluffs.
How to obtain or view these mapsOur publications search allows you to search for maps and publications by geographic area or subject. The subject search is linked to the Bibliography of Maine Geology. Search results are linked to online maps and data and also to an online shopping cart. Although online ordering is not available at this time, the shopping cart order may be printed out and mailed or faxed to the Maine Geological Survey.
Use our online landslide hazard map list to link directly to the quadrangle of your choice.
Last updated on January 26, 2015