2025 CEGIS Annual Research Meeting
July 22-24, 2025, virtual event by invitation only
National Geospatial Technical Operations Center (NGTOC)
Explore Historical USGS Topographic Maps
The Historical Topographic Map Collection contains USGS topographic maps published from 1884 to 2006
National Geospatial Technical Operations Center
The U.S. Geological Survey National Geospatial Technical Operations Center (NGTOC), under the National Geospatial Directorate (NGD), provides leadership and world-class technical expertise in the acquisition and management of trusted geospatial data, services and map products for the Nation. The NGTOC supports a variety of topographic mapping products and services that constitute The National Map.
US Topo maps - powered by The National Map
Past, present, and next generation USGS topographic maps are available as a part of The National Map.
Visit Topographic Maps for more information on historical topographic maps, US Topo, and OnDemand Topos.
The National Map training
The National Geospatial Program has released a series of videos for people who are working with The National Map data and services.
These “how to” videos show how to use the services and interfaces to access data and tools.
2025 CEGIS Annual Research Meeting
The Center of Excellence for Geospatial Information Science (CEGIS) is proud to host the 2025 U.S. Geological Survey’s Center of Excellence for Geospatial Information Science (CEGIS) Annual Research Meeting July 22-24, 2025. The virtual calendar event is being hosted by the USGS Community for Data Integration (CDI) in collaboration with CEGIS and is invitation only.
The annual research meeting is a special occasion to celebrate our accomplishments, explore ongoing projects, and foster collaboration for future endeavors. This year's gathering will feature a broad range of presentations from our researchers and their collaborators as well as engaging discussions.
*The meeting agenda is a work in progress. Watch for updates.