These are skills you may require for successful completion of your project for this class and for any future GIS-related work. In all of the Labs to date you have been provided with geographic data. The USGS provides many data sets free over the Internet. However, you may not know where to start to find out where to locate available GIS data. One of the more important references to know about a study area is which USGS quadrangle it falls in.
Most USGS data is partitioned by quadrangles.
In addition, there are three major types of USGS quadrangles for the United States and they are all based on Map Scale. Go to the Geographic Names Information page by clicking on Geographic Names Information . Query the GNIS online databases . You are going to find the geographic location of a geographic feature. Click on the feature name .