A national crowd-sourcing project from the U.S. Geological Survey that began in Colorado is offering map enthusiasts an extra incentive to contribute to the National Map during International Map Year.
Users who make 2,016 edits to the map between this year's and next year's Geographic Information Systems, or GIS, day will receive a limited edition patch.
The National Map project started in Colorado, according to Mark Newell with the USGS. He adds that means the Centennial State is one of the states with the most data.
Still, Newell says, "We're always looking for more volunteers to go to the National Map Corps page, look at the map, and see what points may be missing."
The National Map Corps project relies on volunteers to collect, edit, and verify data on manmade structures such as schools, hospitals, and cemeteries in areas they know.
November 18, 2015 is GIS-day. Next year, it's November 16.