Question 1

Can GPR Be Used to Locate Unmarked Grave Sites?

Accepted Answer

Yes. High-frequency ground penetrating radar (GPR) can pinpoint unmarked graves without digging by detecting disturbed soil, coffins, or voids below the surface. Sentry Mapping’s cemetery GPR surveys deliver precise GPS coordinates, letting you update burial plot maps and avoid accidentally disturbing unknown interments.

Ground penetrating radar cemetery surveys are today’s gold standard for unmarked grave detection. Sentry Mapping rolls a high-frequency GPR cart in a tight grid over the turf. The radar sends short radio pulses into the ground; a laptop instantly logs reflections caused by disturbed soil layers, coffins, vault lids, or air gaps. Each anomaly is tagged with centimeter-level GPS so you know the exact burial plot location.

Because GPR is totally non-invasive, your grounds remain undisturbed and respectful. In most sandy or loamy soils it can resolve grave features down to about 10 ft deep. Heavy clay or saturated ground can reduce clarity, but our specialists adjust antenna frequency and survey pattern to maximize results.

When the fieldwork is done, we merge every radar hit into our digital cemetery mapping workflow: an easy-to-read master map, an online cemetery GIS map visitors can search, and two free years of Chronicle cemetery management software. Staff can click any plot to see who is buried there—or flag an unmarked grave that needs a new record—eliminating the risk of selling an occupied lot.

Whether you manage a 100-acre municipal cemetery or a small churchyard, professional cemetery mapping with GPR protects heritage, guides maintenance crews, and gives families confidence their loved ones rest undisturbed.

Question 2

How can a churchyard with limited resources modernize its cemetery record-keeping?

Accepted Answer

Even on a tight budget, a churchyard can convert paper documents to digital records by outsourcing one turnkey survey. Sentry Mapping uses ground-penetrating radar, precision GPS and free web-map delivery to capture every marked or unmarked burial, then loads the data into Chronicle cemetery management software so volunteers can update records online.

Start with a professional cemetery mapping survey that respects tight budgets. Sentry Mapping offers a free estimate and can usually complete a small churchyard in less than a week. High-frequency ground penetrating radar cemetery equipment sweeps the entire site without digging, locating every headstone, footstone and hidden burial. Precision GPS fixes each plot, and our team reconciles old notebooks, ledgers and memory with the new data to prevent duplicate sales or accidental disturbances.

Within weeks you receive a printed master map plus an interactive cemetery GIS mapping portal that anyone can open on a phone, tablet, or computer. Volunteers simply type a name to see a grave’s exact coordinates, photos and available space nearby. Because the map lives in the cloud, the church avoids servers, licenses or IT headaches. Two complimentary years of Chronicle cemetery management software let you keep adding deeds, obituaries and maintenance notes.

The result is sustainable digitizing of cemetery records at a fraction of the cost of hiring surveyors or buying standalone cemetery mapping software. Accurate burial plot mapping today safeguards heritage, streamlines grave locating for families tomorrow and gives congregational leaders confidence that every future interment is in the right place.

Question 3

What is cemetery mapping?

Accepted Answer

Cemetery mapping is the process of creating an accurate, searchable map of every grave and plot in a cemetery, including unmarked burials. Using tools like GPS, GIS, aerial imagery, and ground penetrating radar, Sentry Mapping documents exact locations so you can protect graves, avoid double-sold plots, and guide visitors quickly.

Cemetery mapping is the process of documenting where every burial and plot sits, then turning that into a map your staff and visitors can search. Done right, it combines surface features like rows, roads, and sections with what is below ground.

Sentry Mapping provides professional cemetery mapping across the 48 contiguous United States using survey-grade GPS, cemetery GIS mapping, drone or aerial imagery, and ground penetrating radar cemetery scans for unmarked grave detection. Depending on your needs, that may include:

– Burial Plot Mapping to mark each gravesite and redraw plot lines

– Grave Locating for a specific missing or unmarked burial

– Cemetery Survey and Drafting to build an accurate as-built map even when paper records are wrong or missing

– Web Maps for Cemeteries that are clickable and searchable with no annual fee

Your deliverables typically include a printed master map plus a digital cemetery map you can open online to search names, view plot details, and see where space is sold, reserved, or available. For ongoing record work, Sentry also offers Cemetery Management Software with Chronicle, with two years of free Chronicle Viewer access when you partner, so you can keep the map and records current over time.

Question 4

What is the average cost per acre for a cemetery mapping project using ground‑penetrating radar?

Accepted Answer

Sentry Mapping provides a free, no-obligation estimate for each project. Every property is unique and the exact cost varies with soil type, terrain, tree cover, and record condition. Quotes include full GPR coverage, high-precision GPS positioning, drone imagery, and the conversion of raw scans into a color-coded digital cemetery map with printed and interactive deliverables.

On a typical project, Sentry Mapping prices cemetery mapping on a per-acre basis, adjusting the rate only when unusual features demand extra field time. Smaller, wooded, or hilly sites sit near the upper end because thick roots, uneven ground, and heavy clay slow data collection. Flat, open acreage with sandy soil processes faster and often lands closer to the lower figure. Per-acre pricing also drops when you survey several adjoining acres at once, because crew travel and equipment set-up are spread over more ground.

The quoted rate covers far more than a quick sweep. Sentry Mapping’s team grids every square foot with high-frequency GPR and sub-inch GPS to detect marked and unmarked graves. Drone imaging captures a current orthomosaic. Our GIS specialists then turn raw scans into a color-coded digital cemetery map that pinpoints each burial plot, labels ownership, and links photos or documents. You receive a printed master map, an interactive web map with no annual subscription fees, and two years of complimentary access to Chronicle cemetery-management software so staff can update records in real time.

Because every property is unique, Sentry offers a free, no-obligation estimate. Most managers find the service pays for itself by preventing lost plots, avoiding costly digging errors, and opening up sellable space revealed during the survey. Click here to contact us today to discuss your site and receive a customized quote.

Question 5

What is the difference between a “burial-plot map”, a “web-map”, and a “GIS survey”?

Accepted Answer

A burial-plot map is the precise, static master layout of every grave and available space, produced from a one-time GPR/GPS survey. A web-map is the online, clickable version of that map that staff and families can access online to search from any device. A GIS survey is the underlying field data-collection process that feeds both products.

Think of the three deliverables as steps in one streamlined cemetery-mapping workflow.

1) During the GIS survey, Sentry Mapping technicians walk every row with survey-grade GPS and ground-penetrating radar equipment. The instruments record x-y coordinates, depth readings, and attributes—marked and unmarked grave locations, utilities, pathways, trees—creating a rich spatial database. This is the foundation of professional cemetery GIS mapping and integrates seamlessly with municipal or county GIS systems.

2) We produce the burial-plot map from the GIS survey data. This is the authoritative, to-scale master plan you can print, frame, or keep on the grounds. Every lot line, section number, and interment is plotted in its exact position, so you instantly see which plots are occupied, reserved, or available for sale.

3) We then publish the same data as an interactive web-map so your staff, grounds crew, and even visitors can zoom, search a name, or tap a grave for details on a phone or tablet. The web-map lives in the cloud, receives free updates when new burials are added, and links directly to Chronicle’s cemetery management software for digital record-keeping.

Together, the GIS survey, burial-plot map, and web-map turn outdated paper charts into a living, searchable, digital cemetery mapping system that eliminates double-sold plots, speeds grave locating, and preserves your cemetery’s heritage for generations.

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