Coastal Marsh Project Data Products

NASA/University of Maryland Coastal Marsh Project
Project Output Data

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, through FTP in ARC/INFO (Unix, rev. 7.x) or ArcView (rev. 3.x) GIS formats. Secondary processed data sets (NWI and Erdas GIS files) are available but are too large to locate on the Internet. The entire set of Coastal Marsh Project data and a complete Project report are available on CD-ROM. Please contact the UMCP Global Land Cover Facility for further information.

DATA PRODUCTS Please click on an individual listing to download:
1993 Marsh Health Index GIS Files, by State

STATE	Marsh Surface Condition Index ArcView Files	Marsh Health Index ARC/INFO Files	Final Output Maps
CONNECTICUT	ctmar93s.gz 0.49mb	ctmar93a.gz 0.89mb	sample maps
DELAWARE	demar93s.gz 3.3mb	demar93a.gz 6.6mb	sample maps
FLORIDA	flmar93s.gz 1.1mb	flmar93a.gz 1.8mb	sample maps
GEORGIA	gamar93s.gz 12.1mb	gamar93a.gz 19.3mb	sample maps
MARYLAND	mdmar93s.gz 13.4mb	mdmar93a.gz 29.2mb	sample maps
MASSACHUSETTS	mamar93s.gz 0.9mb	mamar93a.gz 1.8mb	sample maps
NEW JERSEY	njmar93s.gz 8.4mb	njmar93a.gz 17.1mb	sample maps
NEW YORK	nymar93s.gz 3.3mb	nymar93a.gz 7.5mb	sample maps
NORTH CAROLINA	ncmar93s.gz 9.7mb	ncmar93a.gz 18.8mb	sample maps
RHODE ISLAND	rimar93s.gz 0.3mb	rimar93a.gz 0.44mb	sample maps
SOUTH CAROLINA	scmar93s.gz 18.7mb	scmar93a.gz 31.6mb	sample maps
VIRGINIA	vamar93s.gz 12.6mb	vamar93a.gz 27mb	sample maps

1984 Marsh Health Index GIS Files for the Delaware Bay Area, by State
STATE Marsh Surface Condition Index
ArcView Files Marsh Health Index
ARC/INFO Files Final Output Maps

DELAWARE demar84s.gz 2.2mb demar84a.gz 4.4mb sample maps

NEW JERSEY (Bay Area) njmar84s.gz 4.3mb njmar84a.gz 9.2mb 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 xxmar93s
OR
tar xvf xxmar93a

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
   mar93s.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
   mar93a.met     = metadata for CMP output data layer
   reference_arc.met     = metadata for reference data layers
   README.arc     = instructions

Any materials used from this web page should receive full and appropriate citation.

These materials may not be used for commercial purposes without consent from NASA and/or the UMD Department of Geography.

Return to the main Coastal Marsh Project Web page

Last Update: September 1999