What is a USGS quadrangle map?
What is a USGS quadrangle map? A "quadrangle" is a topographic map produced by the United States Geological Survey (USGS) covering the United States. The maps are usually named after local physiographic features. A 7.5 minute quadrangle map covers an area of 49 to 70 square miles (130 to 180 km2). How do I download maps from USGS? First, you'll have to create an account with USGS. In the top-right corner, click the Register button....In order to download data from USGS Earth Explorer, here are the four steps you'll need to follow:Set your search criteria.Select your data to download.Filter out...