PLSS conversion without Google Earth

EarthPoint built a solid reputation as a PLSS grid overlay for Google Earth. For surveyors and landmen who needed to visualize a section boundary on satellite imagery in the early 2000s, it served a real purpose. That reputation still holds — and the tool still does what it did then.

The professionals moving on tend to have outgrown the Google Earth workflow. A landman processing 40 APD locations for a Friday deadline cannot afford to troubleshoot a desktop application. A developer building a land management platform needs an API endpoint, not a browser overlay. A field crew checking locations from a truck needs a tool that opens on a phone.

Those requirements — API access, batch input, mobile support, export formats beyond KML — are what Township America was built for. The underlying data is official BLM CadNSDI survey data, not a calculated grid estimate, which means the coordinates reflect actual surveyed parcel boundaries rather than approximations from a formula.

PLSS converters that calculate coordinates from the township-range grid formula return approximations. The math works if the survey grid is perfectly regular — but the actual PLSS was surveyed over 200 years by thousands of different surveyors. Sections near rivers, state boundaries, and correction lines are irregular. The calculated center and the actual parcel centroid can be hundreds of meters apart.

Township America is built on BLM CadNSDI — the Cadastral National Spatial Data Infrastructure. This is the digitized record of the original government surveys, maintained by BLM cadastral surveyors. Every conversion returns the centroid of the actual surveyed parcel polygon, not an estimate.

For drilling permit filings, title searches, and FSA acreage reports where the location has to be right the first time, the data source is not a minor technical detail. A coordinate that places a well site in the wrong quarter section triggers a BLM resubmission. A title error on a 40-acre tract can cloud the chain of title.