Landslides Risk in Maryland — Level 1 of 5

Q: Is landslide damage covered by flood insurance?

Flood insurance typically covers mudflow, which is defined as a river of liquid mud, but it does not cover landslides where ground movement is the primary cause. For true landslide coverage, you may need a separate policy or endorsement. Check with your insurer to understand the exact terms.

Maryland has a relatively low overall risk of landslides, rated 1 out of 5, but localized hazards exist in western mountain areas and along eroding shorelines. Most landslides in the state are small and triggered by heavy rain, storms, or human activity. Homeowners can reduce their vulnerability through drainage improvements and slope awareness.

Landslide Characteristics in Maryland

Maryland is rated level 1 of 5 for landslide risk by FEMA's National Risk Index, meaning the overall hazard is low compared with other states. However, that does not mean landslides never happen. The state's geology and terrain create localized conditions where landslides can occur, especially in western Maryland and along certain coastal areas.

Western Maryland, including the Appalachian Mountains in Allegany and Garrett counties, has steep slopes and layers of shale, sandstone, and limestone. These materials can become unstable when saturated by heavy rainfall or during rapid snowmelt. Small slides, rockfalls, and soil creep are more common here than in the flatter central and eastern parts of the state. The Maryland Department of Emergency Management (MDEM) regularly coordinates with county agencies to monitor weather events that could trigger slope failures.

Another at-risk area is the Chesapeake Bay shoreline and the Atlantic coast, where eroding bluffs and cliffs can slump or collapse. These landslides are often gradual but can be accelerated by wave action, storms, or improper drainage. Coastal homeowners may notice cracks in the ground or leaning trees as early signs of movement. Unlike western Maryland's sudden rockfalls, coastal failures tend to be slower but can still damage structures over time.

Seasonally, the highest landslide risk comes with late winter and spring, when rain is frequent and the ground is already wet. Tropical storms and nor'easters can also trigger landslides in the late summer and fall. Because Maryland's overall risk is low, many residents may not consider landslides, but being aware of your local terrain and soil conditions is important, especially if you live near a slope.

How It Affects Homes

Even in a low-risk state, landslides can cause significant damage to homes. The most common impacts include:

Structural damage: Moving soil can crack foundations, shift walls, and compromise support beams.
Blocked access: Mud or debris can cover driveways and roads, isolating your home.
Utility disruption: Landslides can break gas lines, water pipes, and electrical cables.
Property devaluation: A home with visible slope instability can lose market value.

Insurance is a critical concern. Standard homeowners insurance policies in Maryland typically do not cover landslide damage. Flood insurance, which is separate, may cover some mudflow damage, but it does not cover ground movement like a landslide. In some cases, you may need a specialized endorsement or a separate earth movement policy, but these are often expensive and may not be available in all areas. If you live on a slope or near a bluff, talk to your insurance agent about your specific coverage and whether an add-on makes sense.

Even though Maryland's risk is low, the financial impact of a landslide can be severe. A single event could cost tens of thousands of dollars in repairs. Mitigation is often more cost-effective than recovery, so taking proactive steps to stabilize your property is wise.

How to Prepare Your Home

To reduce your home's vulnerability to landslides, especially if you live in a hilly or coastal area, consider these measures:

Maintain good drainage: Direct rainwater away from slopes using gutters, downspouts, and French drains. Avoid letting water pool near foundations.
Plant deep-rooted vegetation: Trees and shrubs with strong root systems help anchor soil on slopes. Avoid overwatering them, which can saturate the ground.
Inspect for cracks: Regularly check your foundation, driveway, and retaining walls for new cracks or bulges. These can be early warning signs of slope movement.
Build or repair retaining walls: If you have a steep slope on your property, a properly engineered retaining wall can hold back soil. Consult a geotechnical engineer for major projects.
Limit excavation and grading: Avoid cutting into slopes without professional guidance. Improper grading can weaken the slope's stability.
Create an emergency plan: Know evacuation routes if you live in a landslide-prone area. Have a family communication plan and a disaster supply kit.
Watch for warning signs: Be alert for tilted trees, fence posts, or utility poles, as well as windows or doors that stick. These may indicate slow ground movement.

For more detailed guidance, Ready.gov recommends monitoring local weather and watching for sudden increases or decreases in water flow in streams—because a landslide in progress can alter flow.

Frequently Asked Questions

Can landslides happen in any part of Maryland?

Landslides can technically occur in any county, but the risk is highest in western Maryland's mountainous regions and along the Chesapeake Bay and Atlantic coast where slopes and erodible soil exist. The rest of the state, especially the coastal plain and Piedmont, has very low landslide potential.

Does FEMA consider Maryland at high risk for landslides?

No. FEMA's National Risk Index rates Maryland as level 1 out of 5, which means very low risk compared with other states. However, localized conditions can still produce small landslides, so residents in elevated areas should stay informed.

Is landslide damage covered by flood insurance?

Flood insurance typically covers mudflow, which is defined as a river of liquid mud, but it does not cover landslides where ground movement is the primary cause. For true landslide coverage, you may need a separate policy or endorsement. Check with your insurer to understand the exact terms.

Official Resources

Last updated: August 11, 2026. Risk levels are state-wide estimates based on public hazard data — always verify your specific address with the official sources above.