TNMCorps User Guide
The National Map Corps User Guide
Scroll this page to learn how to get started and contribute!
Similar to how OpenStreetMap allows anyone to collect, edit, and use geographic data through an online mapping application, the USGS has developed a web-based map editor to allow volunteers to participate in the collection and verification of structures data. After going through a tiered quality assurance process, the structures data gets incorporated into The National Map.