USGS Frequently Asked Questions

FAQ's about Geospatial Data

Do you have map data in digital form?

How can I find digital map data?

Where can I find bathymetric data?

How can I determine the UTM zone of my digital orthophoto quadrangle (DOQ)?

What are digital elevation models (DEMs)?

What is a digital orthophoto quadrangle (DOQ)?

How can I convert USGS Digital Elevation Models (DEMs) to XYZ triples?

How can I view a USGS digital orthophoto quadrangle (DOQ)?

How can I get Digital Elevation Model (DEM) data into AutoCAD and (or) Microstation?

How can I get DLG data into AutoCAD?

What is the difference between a Band and a Channel?

What is digital line graph (DLG) data?

How does USGS produce a digital orthophoto quadrangle (DOQ)?

How do I get files off the county digital orthophoto quadrangle (DOQ) CD-ROM?

What is the resolution of a digital orthophoto quadrangle (DOQ)?

I downloaded 1:100,000-scale Digital Line Graph (DLG) files from the USGS web site and can't read them into Arc.

What are the formats of digital orthophoto quadrangles (DOQs)?

How can I view a USGS Digital Line Graph (DLG)?

When I try to import a USGS Digital Elevation Model (DEM) into ARC/INFO, I get a premature EOF@ error message.

When I import SDTS Digital Line Graphs (DLGs) into ARC/INFO, they are thousands of feet apart. Why?

Get the next 20 FAQ's

Change the number of FAQ's shown to: 1 5 10 20 50 100