National Map of Structural Data

RESTON, VA. — The mapping crowd-sourcing program, known as The National Map Corps (TNMCorps), encourages citizens to collect structures data by adding new features and/or correcting existing data within The National Map database. Structures being mapped in the project include schools, hospitals, post offices, police stations and other important public buildings.

The 16 recently added states needing help with structures are: Alabama, Arizona, California, Connecticut, Florida, Illinois, Louisiana, Massachusetts, Mississippi, Nebraska, Nevada, New Hampshire, Rhode Island, South Dakota, Vermont, and Wyoming, bringing the total number of states available for updating to 35. The final release of states by the end of the year will open up the entire country for volunteer structures enhancement.

Preliminary results of the effort have been very promising. As part of the project pilot, The National Map Corps had 143 volunteers who improved data for more than 6,400 structures in Colorado. The quality of the volunteer data collected met the USGS standards for position, attribution, and completeness.

The release of 19 states last April resulted in an increase of 154 new citizen geographers who have contributed their skills and local knowledge to The National Map.

“We are excited to open the next series states of our volunteer data project” said Elizabeth McCartney, the Volunteer Geographic Information Project Leader. “The response from the original set of states has been encouraging and we hope to have volunteer participation across the entire nation by the end of the year.”

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