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Five Free Map Tools Every Rural Tennessee Land Buyer Should Know

Writer: Jonathan G. Browning
Jonathan G. Browning
Oct 7
4 min read

Many people start looking at land the same way: a listing, a few photos, maybe a drive-by. Long before that drive, a lot can be learned from free public maps.

Each of these tools answers one question. The real value comes from putting them together. That is what we mean by Layers: one place, several kinds of information, lined up so they explain each other.


1. Tennessee Property Assessment Data: the parcel

Start with the parcel itself. The Tennessee Comptroller's Tennessee Property Assessment Data site lets you find property data from county assessors of property in 86 of Tennessee's 95 counties, with the remaining counties linked to external sites. The site notes that the information is used in assessing the value of real estate for property tax purposes.

Macon, Clay, and Overton counties are all searchable there. Look up the parcel to see its assessed information and to confirm you are looking at the right piece of ground. Remember that assessment data is built for taxes, not for surveying. A parcel outline on a tax map is not a boundary survey.


2. Web Soil Survey: what is under it

Soil decides a lot: where a house can go, whether a septic system will work, how hay or crops will do, and where water will sit. The USDA Natural Resources Conservation Service's Web Soil Survey provides soil data and information produced by the National Cooperative Soil Survey. NRCS says it gives users access to soil information needed to make land-use and management decisions, plus the ability to download spatial, tabular, and thematic data for use in GIS.

Draw an area of interest around the property and look at the soil map units. Pay attention to drainage class and slope.


3. TopoView: how it has changed

The USGS TopoView collection shows the many topographic maps produced for an area over time. USGS notes that in 1879 it began to map the nation's topography, and produced new map versions of each area as the years passed. It also points out that the collection is useful for historical purposes, such as finding the names of natural and cultural features that have changed over time.

For rural land, old topo maps can show former roads, homesites, ponds, cemeteries, and mills that are no longer obvious on the ground. Compare two or three editions to see what changed.


Aerial view of a patchwork of green agricultural fields with small farm buildings

4. The National Map: today's base layers

The USGS National Map is described as a suite of products, services, and applications that provide access to base geospatial information representing the topography, natural landscape, and built environment of the United States. It supports topographic maps, data download, web map services, and online viewing.

Use the National Map viewer to look at current elevation, hydrography, and imagery for the area. Streams, contours, and elevation help you understand how water moves across the property.


5. FEMA Flood Map Service Center: the flood question

Finally, check flooding. FEMA's Flood Map Service Center lets you search FEMA flood maps by address. Look up the property and see what is mapped. If any part of the property is near a creek or river, this step is not optional.


Putting the layers together

Each tool is useful alone. Together, they tell a story. A simple process:

  1. Confirm the parcel in the assessment data.

  2. Pull the soil map and note drainage and slope.

  3. Check current topography and streams in the National Map viewer.

  4. Look at one or two historical topo maps for old features.

  5. Check the flood map.

  6. Then walk the land, or look at current aerial imagery, with all of that in mind.

You will notice things you would have missed. A wet spot that lines up with a poorly drained soil. An old road that shows up on a 1950s map. A building site that sits outside the mapped flood area by a small margin.


Know the limits

Public map data is a starting point. Parcel lines are approximate. Soil maps are generalized. Historical maps show what was mapped, not necessarily everything that was there. None of these replace a survey, a soil test, an inspection, or professional advice on flood risk.


Practical takeaways

  1. Start with the parcel in the Tennessee Property Assessment Data site.

  2. Use Web Soil Survey for drainage, slope, and suitability.

  3. Use TopoView to see how the land has changed.

  4. Use The National Map for current terrain and streams.

  5. Check FEMA flood maps early, and treat all public data as a starting point.

If you are evaluating land and want these layers pulled together with current aerial imagery, contact 48 Pegasus, serving properties within 75 miles of Macon County, Tennessee, across Middle Tennessee and South Central Kentucky.


Sources

Photos: cover by Etienne Girardet / Unsplash; inline by Kevin Charit / Unsplash. Free to use under the Unsplash License.

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