Tennessee County Sinkhole Maps

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Tennessee Sinkhole Maps By County

Use These Maps to Avoid Buying a Sinkhole House in TN

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Tennessee FAQs

Sinkholes form when underground water dissolves soluble rocks such as limestone, gypsum, or salt. Tennessee’s geology makes it vulnerable to sinkhole activity, with certain areas such as Middle Tennessee and the Cumberland Plateau being more prone to sinkholes due to the presence of limestone formations.

Preventative measures include regular inspection and maintenance of your property, as well as proper grading and drainage to direct water away from the foundation. If you suspect a sinkhole is forming, it is important to contact a licensed geologist or engineer to assess the situation and recommend appropriate action.

Sinkhole coverage is typically not included in Tennessee homeowner’s insurance policies, but it can be purchased as an additional endorsement. Coverage amounts and specific terms can vary, so it is important to review your policy and speak with your insurance provider to ensure you have adequate coverage.

  • Tennessee Sinkholes: Geology, Risk, History, and Protection

    Tennessee is known for its music and beautiful mountains, but it’s also famous for sinkholes. With over 54,000 known sinkholes, it’s important for everyone to understand Tennessee’s geology. Whether you own a home, are buying one, or just live nearby, knowing about sinkholes is key. This guide will help you understand the science, where sinkholes happen, and how to protect your property.

    Why Are There So Many Sinkholes in Tennessee?

    Tennessee has a lot of karst limestone and gypsum under its surface. Rainwater can dissolve these rocks, creating underground voids. When the ground above weakens, it can collapse, making a sinkhole. This is why some areas have a lot of sinkholes.

    For example, some counties have up to 8.5 sinkholes per square mile (TN Landforms). The state has more than 54,000 visible sinkholes, making it one of the highest in the nation (Inspectapedia).

    Where Do Sinkholes Happen Most in Tennessee?

    Sinkholes are common in Middle Tennessee and the Cumberland Plateau. Places like Montgomery, White, and Jefferson have thousands of sinkholes. The connection between caves and sinkholes is clear, with Jefferson County having 2,364 sinkholes and over 100 caves.

    For more information, check out the Tennessee Landforms Project.

    Trends, Mapping & Recent Sinkhole News (2023-2024)

    Over 85 of 95 Tennessee counties have mapped sinkholes, with new ones often found. In 2023, lawmakers pushed for bills to require sellers to disclose sinkholes when selling homes. They wanted to make sure buyers knew about these dangers.

    The Sinkhole Mapping Act of 2023 aims to help by making risk zone maps. Cities like Nashville are using GIS to map sinkholes for safety plans (USGS, 2024).

    Jefferson, Montgomery, White, and Robertson counties have the most sinkholes. Many sinkholes are not mapped, making disclosure and mapping more important. For up-to-date data, check TN Landforms.

    Protecting Your Home: Risk, Warning Signs, and Insurance

    If you live in or are buying in Tennessee, knowing the risks is key:

    • Use interactive county maps and check with the local government or TN Landforms for risk areas.
    • Watch for signs like sudden depressions, new cracks in foundations, or soil shifts after rain.
    • Get a geologist or engineer if you see ground movement or are buying in a high-risk area.
    • Keep your lot well-drained and avoid water near your foundation. Good drainage is essential.
    • Check your homeowners’ insurance policy. Tennessee law requires insurers to offer sinkhole coverage. Make sure it’s included, or add it for extra security (TN Insurance Bulletin).

    State Resources & Reliable Data

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