Project Output Data

Data Information

The Coastal Marsh Project used two data sets to produce a model of coastal marsh vulnerability to degradation: National Wetlands Inventory GIS files and Landsat Thematic Mapper satellite images. Reference layers produced by ESRI, Inc. were also used for the final product.

Output data on this site are available, below, in ARC/INFO (Unix, rev.7.x) or ArcView (rev. 3.x) GIS formats. Secondary processed data sets (NWI and Erdas GIS files) are not available. Samples of these data files for the state of Maryland are available here.

Data Products

Please click on an individual listing to download:

STATE	Marsh Surface Condition Index ArcView Files	Marsh Health Index ARC/INFO Files	JPEG Samples
CONNECTICUT	ctmarshs.tar.gz 0.49mb	ctmarsha.tar.gz 0.89mb	sample maps
DELAWARE	demarshs.tar.gz 3.3mb	demarsha.tar.gz 6.6mb	sample maps
FLORIDA	flmarshs.tar.gz 1.1mb	flmarsha.tar.gz 1.8mb	sample maps
GEORGIA	gamarshs.tar.gz 12.1mb	gamarsha.tar.gz 19.3mb	sample maps
MARYLAND	mdmarshs.tar.gz 13.4mb	mdmarsha.tar.gz 29.2mb	sample maps
MASSACHUSETTS	mamarshs.tar.gz 0.9mb	mamarsha.tar.gz 1.8mb	sample maps
NEW JERSEY	njmarshs.tar.gz 8.4mb	njmarsha.tar.gz 17.1mb	sample maps
NEW YORK	nymarshs.tar.gz 3.3mb	nymarsha.tar.gz 7.5mb	sample maps
NORTH CAROLINA	ncmarshs.tar.gz 9.7mb	ncmarsha.tar.gz 18.8mb	sample maps
RHODE ISLAND	rimarshs.tar.gz 0.3mb	rimarsha.tar.gz 0.44mb	sample maps
SOUTH CAROLINA	scmarshs.tar.gz 18.7mb	scmarsha.tar.gz 31.6mb	sample maps
VIRGINIA	vamarshs.tar.gz 12.6mb	vamarsha.tar.gz 27mb	sample maps

GIS File Specifications

ARC/INFO Geographic Informations Systems and PCI Image Processing software packages were used to process the data through the model and output in GIS format. The final output products, containing the Marsh Surface Condition Index, are available in ARC/INFO and ArcView formats. GIS users should be aware that output data are stored in UTM coordinates, with meter map units, a NAD27 datum, and a Clarke 1866 spheroid. All data processing occurred on Unix workstations.

FTP File Specifications

All ArcView and ARC/INFO files were compressed using gzip. If the file's '.gz' extension is lost in the downloading process, the user must rename the file to include a '.gz' extension. After downloading, these files must be uncompressed using 'gunzip' (available on Unix, Windows and Macintosh platforms) as follows:

• gunzip filename.gz

All ArcView and ARC/INFO files were archived using 'tar'. After downloading, these files must be un-archived using 'tar' commands, as follows (where'xx' = state initials):

• tar xvf xxmarshs
  OR
• tar xvf xxmarsha

Each ArcView zipped file contains the following individual files
(where'xx' = state initials):

• xxmarsh.shp, xxmarsh.shx, xxmarsh.dbf = Project output polygons
• xxbndl.shp, xxbndl.shx, xxbndl.dbf = State boundary lines
• xxbndp.shp, xxbndp.shx, xxbndp.dbf = State boundary polygons
• xxrds.shp, xxrds.shx, ssrds.dbf = Major roads
• xxstudy.shp, xxstudy.shx, xxstudy.dbf = Study Area line
• xxmarsh.apr = ArcView Project file - ready to display shapefiles with legends
• marsh.avl = output layer legend
• bnd.avl = boundary layer legend
• study.avl = study area layer legend
• rds.avl = roads layer legend
• marsh_shp.met = metadata for CMP output data layer
• reference_shp.met = metadata for reference data layers
• README.shp = instructions

Each ARC/INFO zipped file contains the following individual files
(where 'xx' = state initials):

• xxmarsh.e00 = Project output polygons
• xxbndl.e00 = State Boundary lines
• xxbndp.e00 = State Boundary polygons
• xxrds.e00 = Major roads
• xxstudy.e00 = Study Area line
• xxmarsh.aml = AML file - ready to display coverages and legends
• marsh.key = output layer key file
• lines.key = reference layers keyfile
• marsh.lut.e00 = output layer LUT file
• marsh_arc.met = metadata for CMP output data layer
• reference_arc.met = metadata for reference data layers
• README.arc = instructions