or "data about data" describes the content, quality, condition,
and other characteristics of data. Metadata are used to organize
and maintain investments in data, to provide information to
data catalogs and clearinghouses, and to aid data transfers.
The Federal Geographic Data Committee approved the Content Standard
for Digital Geospatial Metadata on June 8, 1994. Since that
time, many organizations within and outside of the Federal Government
have adopted the FGDC metadata standard and are using automated
indexing and serving mechanisms to provide access to their holdings
through the Internet.
The National Wetlands Inventory data has a quilt work of
information about the data due to the complexity and geographic
variation of wetlands, the decades of data collection and the
size of the geographic coverage. ‘Metadata’ for the wetlands
dataset is currently captured at three levels. Those levels
are described below and the standard FGDC metadata for all layers served on the Wetlands Mapper can be
found in the list at the bottom of this page.
Federal Geographic Data Committee Metadata
U.S. Federal Geographic Data Committee (FGDC) describes
(geospatial) metadata as follows:
"A metadata record is a file of information,
usually presented as an XML document, which captures
the basic characteristics of a data or information resource.
It represents the who, what, when, where, why and how
of the resource. A geospatial metadata record
includes core library catalog elements such as Title,
Abstract, and Publication Data; geographic elements
such as Geographic Extent and Projection Information;
and database elements such as Attribute Label Definitions
and Attribute Domain Values."
Project Level Metadata
Wetland mapping is conducted in defined geographic
areas called projects. Imagery is used as the base information
to define the type and location of each wetland. The
scale, type and date of imagery used in a project is
provided in a pop-up window when a wetland polygon is
selected on the Wetlands Mapper. Investigators that
complete a wetland mapping project record information
on the source imagery, collateral data, inventory method,
data limitations, geographic features, landforms, wetland
types and other specifics in a project metadata document.
This project level metadata can be found by selecting
a wetland polygon on the Wetlands
Mapper and then clicking on the link next to ‘Project
Metadata’ in the pop-up window. Note: Not all areas
have a Project Metadata document.
Historic Wetlands Map Information Metadata
Information about the wetland types, vegetation,
regional and temporal conditions and geographic features
are captured in a historic map document. This document
is specific to a geographic area and can be accessed
by selecting a wetland polygon on the
Wetlands Mapper and then clicking
on the link next to ‘Historic Map Info’ in the pop-up
window. Note: Not all areas have a Historic Wetlands
Map Information document.
|Wetlands Project Metadata
|Wetlands Historic Map Information
|Historic Wetlands Project Metadata
|Riparian Project Metadata
|Wetland Areas of Interest
Visit the Wetlands Mapper to view
wetlands and wetland information for your area of interest.
For more information about metadata, please visit the
*XML - Extensible Markup Language