Georgia - National Wetlands Inventory - Version 2 - Surface Waters and Wetlands Inventory
Dataset Identification:
Resource Abstract:
This data set represents the extent, approximate location and type of wetlands and deepwater habitats in Georgia. These data
delineate the areal extent of wetlands and surface waters as defined by Cowardin et al. (1979). The National Wetlands Inventory
- Version 2, Surface Waters and Wetlands Inventory was derived by retaining the wetland and deepwater polygons that compose
the NWI digital wetlands spatial data layer and reintroducing any linear wetland or surface water features that were orphaned
from the original NWI hard copy maps by converting them to narrow polygonal features. Additionally, the data are supplemented
with hydrography data, buffered to become polygonal features, as a secondary source for any single-line stream features not
mapped by the NWI and to complete segmented connections. Wetland mapping conducted in WA, OR, CA, NV and ID after 2012 and
most other projects mapped after 2015 were mapped to include all surface water features and are not derived data. The linear
hydrography dataset used to derive Version 2 was the U.S. Geological Survey's National Hydrography Dataset (NHD). Specific
information on the NHD version used to derive Version 2 and where Version 2 was mapped can be found in the 'comments' field
of the Wetlands_Project_Metadata feature class. Certain wetland habitats are excluded from the National mapping program because
of the limitations of aerial imagery as the primary data source used to detect wetlands. These habitats include seagrasses
or submerged aquatic vegetation that are found in the intertidal and subtidal zones of estuaries and near shore coastal waters.
Some deepwater reef communities (coral or tuberficid worm reefs) have also been excluded from the inventory. These habitats,
because of their depth, go undetected by aerial imagery. By policy, the Service also excludes certain types of "farmed wetlands"
as may be defined by the Food Security Act or that do not coincide with the Cowardin et al. definition. Contact the Service's
Regional Wetland Coordinator for additional information on what types of farmed wetlands are included on wetland maps. This
dataset should be used in conjunction with the Wetlands_Project_Metadata layer, which contains project specific wetlands mapping
procedures and information on dates, scales and emulsion of imagery used to map the wetlands within specific project boundaries.
Citation
Title Georgia - National Wetlands Inventory - Version 2 - Surface Waters and Wetlands Inventory
other Citation Details
Cinergi keyword enhanced.File generated at Thu Jun 28 23:43:09 UTC 2018
purpose:
The present goal of the Service is to provide the citizens of the United States and its Trust Territories with current geospatially
referenced information on the status, extent, characteristics and functions of wetlands, riparian, deepwater and related aquatic
habitats in priority areas to promote the understanding and conservation of these resources.
The use of trade, product, industry or firm names or products is for informative purposes only and does not constitute an
endorsement by the U.S. Government or the Fish and Wildlife Service. Links to non-Service Web sites do not imply any official
U.S. Fish and Wildlife Service endorsement of the opinions or ideas expressed therein or guarantee the validity of the information
provided. Base cartographic information used as part of the Wetlands Mapper has been provided through a license agreement
with ESRI and the Department of the Interior.