Question 1

Can we locate lost graves from the 1800s in a cemetery with no marker or records?

Accepted Answer

Yes. Sentry Mapping's high-frequency ground penetrating radar (GPR) scans every square foot of soil, revealing the tell-tale subsurface patterns left by 1800s burials even when stones are long gone. We map each unmarked grave with sub-inch GPS accuracy and add it to a searchable digital cemetery map.

Lost 19th-century graves can be located without disturbing a single shovelful of earth. Sentry Mapping specializes in cemetery mapping, burial-plot mapping, and unmarked grave detection. Our crew grids the cemetery and runs high-frequency ground penetrating radar across each line. This ground penetrating radar cemetery survey supports precise grave locating and digital cemetery mapping. GPR detects changes in the dielectric properties of the soil — rectangular cuts, backfill contrasts, and voids left when a coffin was lowered — all of which still contrast with native soil 150+ years later. We log every radar hit with survey-grade GPS, then overlay those points on an aerial basemap inside our cemetery GIS mapping platform.

Next, our drafting team converts the data into clear burial plot maps that show both marked and newly discovered graves. You and your staff receive a printed master map plus an interactive, zoomable web map. Each grave record can be managed in our optional cemetery management software, so you can attach photos, deeds, and notes in seconds.

Because the process is non-invasive, it protects heritage and complies with preservation rules. Most small historic cemeteries can be completed in a single field visit. With professional cemetery mapping from Sentry Mapping, you can finally answer families’ questions, avoid accidental reuse of occupied plots, and honor every burial dating back to the 1800s.

Question 2

How can I convert my cemetery’s paper records into searchable digital records?

Accepted Answer

Sentry Mapping turns paper ledgers into a living, searchable database. We scan and key your records, confirm every burial with ground-penetrating radar, map each plot by GPS, then load everything into an online Geographic Information System (GIS) and cemetery-management software. Staff and visitors can now search names or lot numbers in seconds.

Converting box-loads of yellowing documents into a modern cemetery GIS is easier than you think. First, our team collects copies of your plot cards, ledgers, and old hand-drawn maps and scans them into high-resolution images. We transcribe key fields, such as name, dates, lot number, and owner, so nothing is lost.

Next, certified technicians walk every row with high-frequency ground-penetrating radar to detect marked and unmarked graves, while GPS and drone imagery fix each burial plot to sub-inch accuracy. These layers feed into a digital cemetery mapping database.

After quality checks, you receive: 1) a printed master map for the office, 2) a password-protected web map the public can search by name, and 3) two free years of Chronicle cemetery management software. Chronicle lets you update burials, attach deeds or photos, and print lot certificates without extra subscriptions. Because the system is cloud-based, your records are safe from fire, water, and employee turnover. The result is accurate burial plot mapping, easy grave locating, and peace of mind that you will never resell an occupied space.

Ask Sentry Mapping for a free estimate tailored to your grounds.

Question 3

What are the best practices for protecting fragile monuments, flat markers, and landscaping while crews grid and scan each section for mapping?

Accepted Answer

For fragile monuments and flat markers, protect the grounds by using Sentry Mapping's non-invasive ground penetrating radar cemetery scanning. Our crews push a radar cart across turf like a stroller, with no digging and no contact with stones.

Best practices for protecting fragile monuments, flat markers, and landscaping during cemetery mapping start with a pre-walk and clear boundaries. Sentry Mapping’s Cemetery Mapping with GPR is non-invasive: a radar cart is pushed across the turf like a stroller and sends low-energy, non-ionizing radio pulses (like Wi-Fi), so nothing touches headstones and no digging is required.

Note any unstable stones, sunken ground, sprinkler heads, and new sod. Set simple no-go zones and safe travel lanes for our team.

After fieldwork, your Burial Plot Mapping and Cemetery Survey & Drafting outputs can be published as web maps for cemeteries and managed in our optional cemetery management software program, reducing repeat foot traffic and future wear.

Question 4

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.

Question 5

Who retains legal ownership of the digital map data and raw GIS files once a municipal cemetery mapping project is complete?

Accepted Answer

In a municipal cemetery mapping project with Sentry Mapping, the municipality keeps legal ownership of the cemetery's digital map data and raw GIS files. Sentry delivers the maps and may host a web map, but the data remains yours.

With Sentry Mapping cemetery mapping for a municipal cemetery, you retain legal ownership of the digital cemetery mapping dataset and the raw GIS files that describe your plots and burials. The project deliverables from burial plot mapping and grave locating become part of your records and your GIS.

At final delivery, you should receive the completed cemetery GIS mapping layers (grave points, plot polygons, sections, roads, and searchable fields) plus a printed master map and a web map link your staff and the public can use. Your records and map layers stay under your exclusive ownership even while they are hosted online. This makes it easier to integrate the data into your city GIS and avoid vendor lock-in.

Sentry Mapping retains only its proprietary equipment and workflows used to collect and process ground penetrating radar cemetery scans and GPS observations.

Web Maps for Cemeteries

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Cemetery Mapping Process

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