Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office for Coastal Management (OCM)
201503
Seagrasses in the continental United States as of March 2015
Charleston, SC
NOAA's Ocean Service, Office for Coastal Management (OCM)
withheld
http://coast.noaa.gov/arcgis/rest/services/MarineCadastre/Seagrasses/MapServer/0
http://www.marinecadastre.gov/data/default.aspx
http://www.coast.noaa.gov/
Aquatic vascular vegetation beds dominated by submerged, rooted, vascular species or submerged or rooted floating freshwater tidal vascular vegetation.
This is NOT a complete collection of seagrasses on the seafloor, nor are the locations to be considered exact. The presence and location of the seagrasses have been derived from multiple state websites. These data are intended for coastal and ocean planning. Not for navigation.
To support coastal and ocean planning and other activities pursuant to the Energy Policy Act, Coastal Zone Management Act, Magnuson-Stevens Fishery Conservation and Management Act, National Environmental Policy Act, Rivers and Harbors Act and the Submerged Lands Act.
USERS PLEASE NOTE: For Washington state, a large percentage of the state's coastline was designated as having seagrass based on a crosswalk between survey units (polygons) and shoreline seagrass status (polylines). Where polylines that were attributed as "seagrass present", polygons that intersected these line segments were extracted. While the resulting polygons (i.e. survey units) express that seagrass is found therein, it does not represent the footprint of the seagrass extent. Conversely, in some cases seagrass footprints were provided, such as in: Willapa Bay, Padilla Bay, and areas of Snohomish County.
[Survey units originated from the Submerged Vegetation Monitoring Project (for Puget Sound and Strait of Juan de Fuca) and the Washington Marine Vegetation Atlas (for the Pacific coast). Shoreline status was provided by Washington state's ShoreZone inventory.]
201503
publication date
As needed
-124.766547
-66.976244
49.002104
24.443720
ISO 19115 Topic Category
biota
environment
oceans
None
benthic
aquatic vegetation
vascular
macroalgae
herbaceous
oyster bed
tidal
turf algal bed
freshwater
brackish
seagrass
eelgrass
surfgrass
None
National
United States
Alabama
California
Connecticut
Florida
Louisiana
Massachusetts
Maryland
Maine
Mississippi
North Carolina
New Hampshire
New Jersey
New York
Oregon
Rhode Island
Texas
Virginia
Washington
East Coast
Gulf of Mexico
Pacific
None
These data are intended for coastal and ocean use planning. Not for navigation.
http://www.marinecadastre.gov/about/disclaimer.html
NOAA Office for Coastal Management
mailing and physical
2234 South Hobson Avenue
Charleston
SC
29405-2413
843-740-1202
coastal.info@noaa.gov
The attributes in this dataset are believed to be accurate.
These data are believed to be logically consistent. Geometry is topologically clean.
Spatial and attribute properties are believed to be complete, although attribute information has been simplified. Geometric thresholds from original data are preserved. No tests have been completed for exhaustiveness.
Maximum scale of intended use is 1:80,000.
Mobile Bay National Estuary Program
Connecticut Department of Energy and Environmental Protection
Collier County
Florida Fish and Wildlife Research Institute
Florida Minerals Management Service
National Oceanic and Atmospheric Administration National Centers for Coastal Ocean Science
Florida Palm Beach County
Rookery Bay National Estuarine Research Reserve System
Southwest Florida Water Management District
St Johns River Water Management District
Suwanee River Water Management District
US Geological Survey National Wetlands Research Center
Massachusetts Department of Environmental Protection
Maine Department of Marine Resources
University of Southern Mississippi
North Carolina Department of Environment and Natural Resources
University of New Hampshire
Rutgers University Center for Remote Sensing and Spatial Analysis
Hudson River National Estuarine Research Reserve System
New York Department of State
Rhode Island Department of Environmental Management
Texas Parks and Wildlife Department
Virginia Institute of Marine Science
Washington Department of Natural Resources
Oregon Environmental Protection Agency
California Department of Fish and Wildlife
California National Marine Fisheries Service
NOAA Office for Coastal Management
201503
Seagrasses
http://www.mobilebaynep.com/
http://www.ct.gov/deep/site/default.asp
http://www.colliergov.net/
http://myfwc.com/research/
http://www.dep.state.fl.us/water/mines/
http://coastalscience.noaa.gov/
http://www.pbcgov.com/
http://www.dep.state.fl.us/coastal/sites/rookery/
http://www.swfwmd.state.fl.us/
http://www.sjrwmd.com/
http://www.srwmd.state.fl.us/
http://www.nwrc.usgs.gov/
http://www.mass.gov/eea/agencies/massdep/
http://www.maine.gov/dmr/index.htm
http://www.usm.edu/
http://portal.ncdenr.org/web/guest
http://www.unh.edu/
http://crssa.rutgers.edu/
http://www.hrnerr.org/
http://www.dos.ny.gov/
http://www.dem.ri.gov/
http://www.tpwd.state.tx.us/
http://www.vims.edu/
http://www.dnr.wa.gov/
http://www.epa.gov/
https://www.wildlife.ca.gov/
http://www.nmfs.noaa.gov/
http://coast.noaa.gov/
online
1986
2014
ground condition
NOAA
Source data was received directly from sources. Downloadable source data is not available.
Source data was received directly from sources. Downloadable source data is not available.
Import each shapefile into a file geodatabase, reprojecting the data into NAD83.
Since there is a lot of overlapping in the data, dissolve each state feature class based on all fields except Object ID, Acres, Shape Length, and Shape Area.
Explode all multipart features in each state feature class.
Append all state feature classes into a single feature class.
Check for overlapping features and merge into a single feature.
Rename attribute field names to those referenced in the data dictionary. Any additional fields can be dismissed.
Delete all superfluous fields.
Check geometry.
Reproject data into WGS84.
201310
Source data was received directly from sources. Downloadable source data is not available.
USERS PLEASE NOTE: For Washington state, a large percentage of the state's coastline was designated as having seagrass based on a crosswalk between survey units (polygons) and shoreline seagrass status (polylines). Where polylines that were attributed as "seagrass present", polygons that intersected these line segments were extracted. While the resulting polygons (i.e. survey units) express that seagrass is found therein, it does not represent the footprint of the seagrass extent. Conversely, in some cases seagrass footprints were provided, such as in: Willapa Bay, Padilla Bay, and areas of Snohomish County.
[Survey units originated from the Submerged Vegetation Monitoring Project (for Puget Sound and Strait of Juan de Fuca) and the Washington Marine Vegetation Atlas (for the Pacific coast). Shoreline status was provided by Washington state's ShoreZone inventory.]
1. Polygon to polyline crosswalk (noted above) performed in Washington state.
2. Shoreline data (denoting seagrass presence) from California DFW was buffered by 20 meters to create polygons (i.e. generalized footprints).
3. Projected each data set in NAD83.
4. Fields (date, provider, location) were added to each data set then populated.
5. Erased data sets that overlapped, retaining the newer data or data determined to be preferential to another.
6. All data sets merged together.
7. Removed unnecessary fields and populated others according to data dictionary.
8. Split merged data by UTM (zone 10 and 11), exploded features, and calculated area of polygons (in acres).
9. Merged data from both zones then check geometry.
10. Projected data in WGS84.
201503
Vector
Simple
FALSE
0
TRUE
FALSE
North American Datum of 1983
Geodetic Reference System 1980
6378137.000000
298.257222
Seagrasses
Aquatic vascular vegetation beds dominated by submerged, rooted, vascular species or submerged or rooted floating freshwater tidal vascular vegetation.
NOAA Office for Coastal Management
Feature Class
0
OBJECTID_1
FID
OID
4
10
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
OBJECTID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
OBJECTID
Integer
4
10
0
Shape
Feature geometry.
ESRI
Coordinates defining the features.
Shape
Geometry
4
0
0
state
State location of seagrass
NOAA Office for Coastal Management
Values unique per feature.
state
String
50
0
0
setting
Biotic setting where biota lives
NOAA Office for Coastal Management
Values unique per feature.
setting
String
50
0
0
class
Aquatic vegetation type
NOAA Office for Coastal Management
Values unique per feature.
class
String
50
0
0
subclass
Aquatic vegetation attachment type
NOAA Office for Coastal Management
Values unique per feature.
subclass
String
50
0
0
community
Aquatic species type
NOAA Office for Coastal Management
Values unique per feature.
community
String
50
0
0
species_1
Species included
NOAA Office for Coastal Management
Values unique per feature.
species_1
String
50
0
0
species_2
Species included
NOAA Office for Coastal Management
Values unique per feature.
species_2
String
50
0
0
species_3
Species included
NOAA Office for Coastal Management
Values unique per feature.
species_3
String
50
0
0
cooccurrin
cooccurrin
String
50
0
0
species_4
Species included
NOAA Office for Coastal Management
Values unique per feature.
species_4
String
50
0
0
species_5
Species included
NOAA Office for Coastal Management
Values unique per feature.
species_5
String
50
0
0
species_6
Species included
NOAA Office for Coastal Management
Values unique per feature.
species_6
String
50
0
0
species_7
Species included
NOAA Office for Coastal Management
Values unique per feature.
species_7
String
50
0
0
CMECS
Coastal and Marine Ecological Classification Standard
NOAA Office for Coastal Management
Values unique per feature.
CMECS
String
50
0
0
cover
Percent coverage
NOAA Office for Coastal Management
Values unique per feature.
cover
String
50
0
0
source
Origin of data
NOAA Office for Coastal Management
Values unique per feature.
source
String
100
0
0
date
Date of data
NOAA Office for Coastal Management
Values unique per feature.
date
String
50
0
0
group_
Aquatic habitat
NOAA Office for Coastal Management
Values unique per feature.
group_
String
50
0
0
stratum
Habitat stratum type
NOAA Office for Coastal Management
Values unique per feature.
stratum
String
50
0
0
tidal
Tidal environment
NOAA Office for Coastal Management
Values unique per feature.
tidal
String
50
0
0
Shape_Leng
Shape_Leng
Double
8
38
8
acres
Areal extent of seagrass (in acres)
NOAA Office for Coastal Management
Values unique per feature.
acres
Double
8
38
8
Shape.STArea()
Shape.STArea()
Double
0
0
0
Shape.STLength()
Shape.STLength()
Double
0
0
0
NOAA Office for Coastal Management
mailing and physical
2234 South Hobson Avenue
Charleston
SC
29405-2413
843-740-1202
coastal.info@noaa.gov
Downloadable Data
NOAA makes no warranties or representations whatsoever regarding the availability, quality, accuracy, content, completeness or suitability for the user's needs of such information. The services, information, and data made available on the Marine Cadastre web site are provided 'as is' without warranties of any kind. These data are intended for coastal and ocean use planning. Not for navigation.
20150410
NOAA Office for Coastal Management
mailing and physical address
2234 South Hobson Avenue
Charleston
SC
29405-2413
843-740-1202
coastal.info@noaa.gov
FGDC Content Standard for Digital Geospatial Metadata
FGDC-STD-001-1998
Version 6.2 (Build 9200) ; Esri ArcGIS 10.7.1.11595
Project_SpHabitatViewer_BIO_Seagrasses_NOAA_2015
1
-124.406490
-123.880870
45.709318
43.125925
Project_SpHabitatViewer_BIO_Seagrasses_NOAA_2015
002
-13848867.085210
-13790355.377874
5331158.583263
5733888.898483
1
5.909
Projected
GCS_WGS_1984
Linear Unit: Meter (1.000000)
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Oregon GIS Metadata
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dataset
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