AP land resurvey GIS

Match each new land resurvey parcel to its old cadastral survey number (FMB / village map boundaries) using a spatial join. The output table is especially helpful when preparing a correlation statement linking old survey numbers with new resurvey parcel numbers for ground validation.

100% client-side Old survey ↔ new parcel Correlation-ready CSV SHP / GeoJSON / CSV

Ready Workflow How to use Resurvey suite

1. Upload both layers 2. Set join rules 3. Run & export map

Quick workflow

Use this tool when you need to know which old survey number belongs to each new resurvey parcel — before or alongside preparing village Adangal/Pahani correlation statements.

Upload resurvey parcels — the new parcel polygons with resurvey parcel IDs or numbers (your target layer).
Upload survey-number boundaries — the old cadastral FMB / village map layer with survey numbers (your reference layer).
Adjust filters if needed — ignore tiny edge overlaps and exclude government land where applicable.
Run Boundary Checker — review the map and attribute table showing each parcel matched to its survey number(s).
Export CSV or Shapefile — use the joined table as supporting data for correlation statements and ground validation records.

Government land verification

Please ensure that no land parcel intersects the government land parcels boundary before using this tool. It is mandatory to verify and isolate government lands beforehand to prevent unlawful encroachment or mapping errors on public domains. Please ensure it before proceeding.

Upload & join settings

Step 1–2: upload new resurvey parcels and old survey-number boundaries. Step 3: run the checker.

1 New resurvey parcels (target layer)

New land resurvey parcel polygons — each feature should have a resurvey parcel ID or parcel number.

Drop resurvey parcel layer here

.zip Shapefile or GeoJSON

No file selected

2 Old cadastral survey numbers (reference layer)

FMB / village map survey-number boundaries — the old cadastral survey no. field is used for the join.

Drop survey-number layer here

.zip Shapefile or GeoJSON

No file selected

Spatial Join Filters

Fine-tune spatial parameters to filter out boundary line touches and tiny digitizing slivers.

Intersection Overlap to Ignore 1.0%

Filters out intersects where the survey overlap is less than this percentage of the parcel area.

Minimum Overlap Area 1.0 m²

Filters out intersects where the absolute physical overlap is less than this size (sq. meters).

Govt Land Filter

Advanced GIS Tuning

Schema & Export Tuning

Map custom join attributes and control export columns and projection standards.

Survey Source Field Field in reference layer representing the Survey Number (guesses if disabled).

Parcel Joined Field Name The attribute column name to write in the output files (max 10 chars).

Auxiliary Metrics to Join

Save Intersection Area (join_area) Save Intersection Pct (join_pct) Save Intersections Count (join_cnt) Copy All Reference Attributes (r_*)

Export CRS Projection Override projection of compiled Shapefiles on export.

Map & Styling Tuning

Joins each resurvey parcel to its matched old survey number. Export CSV when finished for correlation statement work.

Upload both layers, then click Run Boundary Checker to see each resurvey parcel matched to its old survey number on the map.

Showing 0 rows

Parcel Index	Area (m²)	Joined Survey No	Intersection Details
No data processed yet. Run the Boundary Checker first.

How It Works

1. Prepare two layers

Layer A — Resurvey parcels: new parcel polygons from your resurvey GIS work (each feature should carry a parcel ID or resurvey parcel number). Layer B — Survey numbers: old cadastral boundaries from FMB, village map, or RSR with the survey number in an attribute field. Upload both as Shapefile (.zip) or GeoJSON.

2. Join parcels to survey numbers

The tool finds which survey boundary each resurvey parcel falls inside (or overlaps most). Use filters to ignore sliver touches along shared edges. The result is a clear old survey number → new parcel number mapping you can verify on the map.

3. Export for correlation work

Download CSV for spreadsheet review or paste into correlation workflows, or export Shapefile / GeoJSON to keep the joined attributes on the map. Pair this output with Adangal/Pahani records when drafting survey-number-wise correlation statements.

Frequently Asked Questions

How does this help with correlation statements?

A correlation statement links old cadastral survey numbers to new resurvey parcel numbers and related land records. This tool builds that spatial link automatically from your GIS layers, so you can confirm matches before or while using the Village Adangal Correlation Generator.

Which layer is “old” and which is “new”?

Resurvey parcels = new boundaries from the current resurvey (target). Survey numbers = old cadastral reference boundaries (FMB/village map). The tool writes the matched survey number into each parcel feature.

What file formats are supported?

Zipped Shapefile (.zip with .shp, .shx, .dbf) and GeoJSON (.geojson or .json) for both layers. UTM Zone 44N is typical for Andhra Pradesh — both layers must share a compatible coordinate system.

Why verify government land first?

Parcels touching government or poramboke land should be identified before joining private survey numbers. Use the govt land filter or clean the reference layer first.

Is my data uploaded to a server?

No. Parsing, spatial analysis, map rendering, and export all run entirely in your browser.

Land Resurvey Parcel Boundary Checker