Skip to main content
U.S. flag

An official website of the United States government

Core Science Systems Mission Area

USGS CSS serves as the primary national civilian mapping agency, including topographic and geologic mapping for Federal and State requirements, national geospatial coordination, satellite operations and remote sensing. Our products and data are necessary to understand, monitor, and detect changes that affect the Nation’s natural and agricultural resources, the economy, public safety, and security.

News

Landsat at Work: USGS Informing Domestic Lithium Development

Landsat at Work: USGS Informing Domestic Lithium Development

Landsat at Work: Helping Farmers Keep Soil Healthy

Landsat at Work: Helping Farmers Keep Soil Healthy

Latest in Landsat September 2025 - Vol. 4 | Issue 8

Latest in Landsat September 2025 - Vol. 4 | Issue 8

Publications

GIScience in the era of Artificial Intelligence: A research agenda towards Autonomous GIS GIScience in the era of Artificial Intelligence: A research agenda towards Autonomous GIS

The advent of generative AI exemplified by large language models (LLMs) opens new ways to represent and compute geographic information and transcends the process of geographic knowledge production, driving geographic information systems (GIS) towards autonomous GIS. Leveraging LLMs as the decision core, autonomous GIS can independently generate and execute geoprocessing workflows to...
Authors
Zhenlong Li, Huan Ning, Song Gao, Krzysztof Janowicz, Wenwen Li, Samantha Arundel, Chaowei Yang, Budhendra Bhaduri, Shaoweng Wang, A-Xing Zhu, Mark Gahegan, Shashi Shekhar, Xinyue Ye, Grant McKenzie, Guido Cervone, Michael Hodgson

Grammar to graph—An approach for semantic transformation of annotations to triples Grammar to graph—An approach for semantic transformation of annotations to triples

Data annotation is the process of labeling data to show the outcome that a related data model should predict. In this study, annotation data were transformed into semantic graph triples, mainly for use with the Resource Description Framework (RDF), a type of entity-relationship-attribute data model for graph databases. The transformation of annotation data to semantic graph triples...
Authors
Dalia Varanka, Emily Abbott

Validation of the geometric accuracy of airborne light detection and ranging data for eastern Iowa, 2019 Validation of the geometric accuracy of airborne light detection and ranging data for eastern Iowa, 2019

A geometric accuracy assessment of lidar data collected in eastern Iowa in 2019 as part of the 3D Elevation Program (3DEP) was conducted. The assessment involved evaluating interswath accuracy, same surface precision, point density, absolute accuracy, and consistency with adjacent 3DEP datasets. The results demonstrate that the data meet or exceed the quality level 2 specifications...
Authors
Aparajithan Sampath, Jeffrey Irwin, Travis Kropuenske

Science

2025 CEGIS Annual Research Meeting

The Center of Excellence for Geospatial Information Science (CEGIS) was proud to host the 2025 CEGIS Annual Research Meeting July 22-24, 2025. 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 featured a broad range of presentations from our researchers and their...
2025 CEGIS Annual Research Meeting

2025 CEGIS Annual Research Meeting

The Center of Excellence for Geospatial Information Science (CEGIS) was proud to host the 2025 CEGIS Annual Research Meeting July 22-24, 2025. 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 featured a broad range of presentations from our researchers and their...
Learn More

Eyes on Earth Episode 136 – The EROS Test Site

The same as the Landsat satellite, only smaller—that’s a fair description of the field spectrometer used at the EROS test site for validating Landsat’s accuracy.
Eyes on Earth Episode 136 – The EROS Test Site

Eyes on Earth Episode 136 – The EROS Test Site

The same as the Landsat satellite, only smaller—that’s a fair description of the field spectrometer used at the EROS test site for validating Landsat’s accuracy.
Learn More
Eyes on Earth Episode 135 – Exotic Annual Grasses and Sheep Grazing

Eyes on Earth Episode 135 – Exotic Annual Grasses and Sheep Grazing

Invasive grasses are degrading sagebrush in western states. Can sheep help us restore these ecosystems?
Learn More
Was this page helpful?