Editing

By The National Map Corps

TNMCorps volunteers research, verify, and edit the structures data that goes into The National Map, US Topo maps, and a variety of other USGS products. This section will walk you through each aspect of the editing process.

Learn about our editor roles

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There are 17 different types of structures TNMCorps volunteers collect and update as point data for use on US Topo Maps and other various USGS products. Each structure type is represented by a unique symbol, which is placed on the center of a building or cemetery site in aerial imagery.

TNMCorps volunteers are responsible for researching each feature and determining if a new point needs to be added, or if existing points need to be updated or deleted.

Carefully review each of the following sections to learn more about each aspect of the editing process:

Editing

How to Research a Structure

How to Edit an Existing Structure

How to Add a New Structure

How to Delete a Structure