Jennifer B. Bauer, L.G.

Jennifer@appalachianlandslide.com

LANDSLIDES IN WNCWHAT TO LOOK FOR AND WHEN TO CALL

Resources

Things to Look for

Landslide Information

OVERVIEW

Resources

Things to Look for

Landslide Information

OVERVIEW

NORTH CAROLINA LANDSLIDE INVENTORY

locations in ALC/NCGS database

Mapped Landslides = 3,512

Mapped Landslide Deposits = 3,311

• 48 people killed since 1916

• > 85 homes & other structures damaged or destroyed

• Millions of taxpayer and private dollars spent on repair and buyouts

WAYEHUTTA CREEK CREEK WATERSHED

PHASE I - INVENTORY

• 37 - Number of landslides • 9 Natural slopes

• 28 Modified slopes

• 3 Active landslides

• 6 High potential for future movement

WAYEHUTTA CREEK CREEK WATERSHED

PHASE I - INVENTORY

• 10 – Number of subsidence locations• 9 High potential for

future movement

WAYEHUTTA CREEK CREEK WATERSHED

PHASE I - INVENTORY

• 116 – Number of landslide deposits (660 acres)

TYPES OF LANDSLIDES IN WNC

• Debris Flows • Debris Slides• Weathered Rock Slides • Rock Slides

• Natural Slopes • Human Modified Slopes

DEBRIS FLOW – NATURAL SLOPE

Photo from NCGS

Photos from NCGS

Photo courtesy of Jackson Co. Erosion Control

DEBRIS SLIDE – MODIFIED SLOPE

DEBRIS SLIDE– MODIFIED SLOPE

Photo courtesy of Jackson Co. Erosion Control

Resources

Things to Look for

Landslide Information

OVERVIEW

EXISTINGSLOPE MOVEMENTS/SLOPE MOVEMENT DEPOSITS

Map from NCGS

Mapped Deposit

Recent slide area

Toe

active mainscarp

activeinternalscarp

inactive scarp

approximateoutline of debrisslide

Map and photos from NCGS

active scarp

Photos from NCGS

THINGS TO LOOK FOR:CRACKS IN THE GROUND

THINGS TO LOOK FOR:STRUCTURAL DAMAGE

THINGS TO LOOK FOR:ABUNDANCE OF CURVED OR LEANING TREES

Photo from NCGS

Resources

Things to Look for

Landslide Information

OVERVIEW

ONLINE RESOURCES

• Appalachian Landslide Consultants, PLLC website

• NC Geological Survey website

• National Environmental Modeling and Analysis Center (NEMAC) at UNC-Asheville,

• WNC vitality index – all mapped landslides

• OptIN Regional Planning Tool – Southwestern Commission Council of Government & Appalachian Regional Commission

APPALACHIAN LANDSLIDE CONSULTANTS

• Real Estate Property evaluations

• Buyers – looking for land or home

• Sellers – showcase safer building sites

• Owners – wanting to ensure peace of mind

• Developers – Find appropriate development areas, best use of resources on the land

• Landslide Susceptibility mapping

• Resources on ALC website, Facebook

HOW TO PROTECT YOURSELF?

• Be landslide aware

• Report area landslides

• Use the maps

• Call a professional

Jennifer B. Bauer, L.G.

Principal Geologist/Co-owner

jennifer@appalachianlandslide.com

Stephen J. Fuemmeler, L.G.

Principal Geologist/Co-owner

stephen@appalachianlandslide.com

Thank You!

RESOURCES

• Appalachian Landslide Consultants, PLLC –

• Website - www.appalachianlandslide.com,

• Facebook - https://www.facebook.com/pages/Appalachian-Landslide-Consultants-PLLC/331675916961376

• NC Geological Survey website - http://www.geology.enr.state.nc.us/Landslide_Info/Landslides_main.htm

• National Environmental Modeling and Analysis Center (NEMAC) at UNC-Asheville

• WNC vitality index – http://www.wncvitalityindex.org/gis/

• OptIN Regional Planning Tool - http://optinswnc.nemac.org/gis/

Slope MeasurementsDegrees PercentRatio

30º 1.75 H : 1 V 57%

22º 2.5 H : 1 V 40%

19º 2.9 H : 1 V 35%

39º 1.25 H : 1 V 80%

45º 1 H : 1 V 100%

34º 1.5 H : 1 V 67%

27º 2.0 H : 1 V 50%