TNMCorps volunteers collect and update structures data for The National  Map using our online mapping application. Structures include schools,  hospitals, post offices, police stations, cemeteries, and other  important public buildings. TNMCorps volunteers primarily engage in  internet research and data entry. They check the location of existing  structure points against aerial imagery to verify that they are in the  correct location and confirm that the name and address information are  correct using authoritative sources. Volunteers also add missing  structure points to the map and remove points for structures that no  longer exist.

By updating and verifying structures data across all 50 states, Puerto  Rico, the US Virgin Islands, and now Guam, American Samoa, and the  Northern Mariana Islands, volunteers are making significant  contributions to USGS National Structures Database, The National Map,  and ultimately U.S. Topo Maps! TNMCorps volunteers earn virtual badges  for participating and are recognized for their contributions (with their  permission) via USGS and The National Map social media.

If you have access to the internet and are willing to dedicate some time  editing map data, we hope you will consider participating! Since this  is a remote computer-based opportunity, you can participate from  anywhere you have reliable internet access. This is an ongoing virtual  opportunity, and we do not have any hours or length of service  requirements. TNMCorps volunteers are welcome to spend as much or as  little time editing data as suits their schedules for as long as they  feel like participating. If you need information on tracking volunteer  hours for community service or a school project, please reach out to us  at nationalmapcorps@usgs.gov. This project is suitable for ages 16 and  over.

After your application is accepted, we will be reaching out to you via  nationalmapcorps@usgs.gov with instructions on how to get started, so we  recommend adding that address to your contacts list to ensure our  messages get through. If you don't hear from us within a day after we've  accepted your application, be sure to check your spam or trash folders  for any messages from nationalmapcorps@usgs.gov.