Open-file Reports are available as free downloads or on CD/DVD-ROM (see below).
Most of the reports are
PDF files and require the free Adobe
Acrobat Reader software to view. These reports may also contain GIS data or other file
types, and some are collections of files that are intended to run from a CD-ROM
or local hard drive.
These reports are subject to frequent revisions and may be unavailable
when being modified. The Last Modified date listed here
reflects when a file was last saved and may not be the
date this report was last revised.