Gathering existing
information
Collecting all information produced previously in a "hard
form" -- reports, planning documents, legal documents, maps,
satellite images, aerial photographs, and old photographs -- is
almost always the best way to start the PCRA process. Often, a great
deal of good quality information already exists, allowing the
researchers to substantially reduce the number of, or to redirect,
assessment activities. Plans for PCRA efforts in the field should
therefore be kept open until after an appraisal of existing
documented information has been completed. It is also critical to
evaluate the existing information and to use relevant and current
but not obsolete reports or data.
Types of documented information
Methodology for
collecting information