GIS data and web map services

GIS software is required in order to use the below data sets. Please review the metadata provided and cite the appropriate sources when using these data. Contact us with your questions or concerns, particularly when using these data in an analysis or assessment capacity.

Note: Some of the GIS files available are very large. If you experience difficulty downloading a file, please contact us so we can help you get the file you need. We have other options for getting you the file including FTP.