National Geospatial Technical Operations Center

Home

The U.S. Geological Survey National Geospatial Technical Operations Center (NGTOC) provides leadership and world-class technical expertise in the acquisition and management of trusted geospatial data, services, and map products for the Nation. NGTOC supports The National Map as part of the National Geospatial Program (NGP). 

The National Map

The National Map

The National Map is a collaborative effort among the USGS and partners to improve and deliver topographic information for the Nation. The NGTOC creates, maintains and publishes the products and services of The National Map.

Products & Services

Center of Excellence for Geospatial Information Science (CEGIS)

Center of Excellence for Geospatial Information Science (CEGIS)

CEGIS is a virtual organization with Federal and academic affiliate scientists conducting research in support of The National Map and the Three-Dimensional Elevation Program (3DEP).

CEGIS Information

News

Date published: May 21, 2020

Mapping Challenge Update (05/21/2020): City / Town Halls in FL

Almost 300 points came in since we launched this challenge last week - IMPRESSIVE!

Date published: May 21, 2020

Mapping Challenge Update (05/21/2020): City / Town Halls in LA, MS, & AL

This challenge is SO CLOSE  to being finished!  Louisiana and Mississippi are looking nice, but Alabama needs some attention.  See our spatial analysis for tips. 

Date published: May 21, 2020

Mapping Challenge Update (05/21/2020): Schools in MS & AL

Calling all Peer Reviewers and Advanced Editors!  Only a small portion of schools in Mississippi and Alabama remain and we need help reviewing them!

Publications

Publication Thumbnail
Year Published: 2019

Analysis for agreement of the Northern Gulf of Mexico topobathymetric digital elevation model with 3-Dimensional Elevation Program 1/3 arc-second digital elevation models

Topographical differencing and edge-matching analyses were used to evaluate agreement of the Coastal National Elevation Database Applications Project’s Northern Gulf of Mexico topobathymetric digital elevation model (TBDEM) with The National Map 3-Dimensional Elevation Program (3DEP) 1/3 arc-second digital elevation models (DEMs). In addition to...

Miller-Corbett, Cynthia
Miller-Corbett, C., 2019, Analysis for agreement of the Northern Gulf of Mexico topobathymetric digital elevation model with 3-Dimensional Elevation Program 1/3 arc-second digital elevation models: U.S. Geological Survey Open-File Report 2019–1016, 44 p., https://doi.org/10.3133/ofr20191016.

Publication Thumbnail
Year Published: 2019

Topographic mapping evolution: From field and photogrammetric data collection to GIS production and Linked Open Data

Whither the topographic map? Topographic mapping historically has been approached as a map factory operation through the period 1879-1990. During this time, data were field and photogrammetrically collected; cartographically verified and annotated creating a compilation manuscript; further edited, generalized, symbolized, and produced as a graphic...

Usery, E. Lynn; Varanka, Dalia E.; Davis, Larry

Publication Thumbnail
Year Published: 2019

US Topo Product Standard

This document defines a U.S. Geological Survey (USGS) digital topographic map. This map product series, named “US Topo,” is modeled on the now historical USGS 7.5-minute (1:24,000 scale) topographic map series produced and printed by the USGS from 1947 to 2006. US Topo maps have the same extent, scale, and general layout as the historical...

Davis, Larry R.; Fishburn, Kristin A.; Lestinsky, Helmut; Moore, Laurence R.; Walter, Jennifer L.
Davis, L.R., Fishburn, K.A., Lestinsky, Helmut, Moore, L.R., and Walter, J.L., 2019, US Topo Product Standard (ver. 2.0, February 2019): U.S. Geological Survey Techniques and Methods book 11, chap. B2, 20 p., 3 plates, scales 1:24,000, 1:25,000, and 1:20,000, https://doi.org/10.3133/tm11b2.