Connecticut Eelgrass Beds 2002 Poly

Frequently-asked questions:

• What does this data set describe?
  1. How should this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• How was the data set created?
  1. Where did the data come from?
  2. What changes have been made?
• How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
  5. How consistent are the relationships among the data, including topology?
• How can someone get a copy of the data set?
  1. Are there legal restrictions on access or use of the data?
  2. Who distributes the data?
  3. What's the catalog number I need to order this data set?
  4. What legal disclaimers am I supposed to read?
  5. How can I download or order the data?
  6. Is there some other way to get the data?
  7. What hardware or software do I need in order to use the data set?
• Who wrote the metadata?

Interpretation and identification of Eelgrass beds located in the Long Island Sound Eastern Connecticut shoreline, Fishers Island NYS and the Northshore of Long Island NYS.  Generated from 1:20,000 True Color Aerial Photography, 6/18/02.

1. How should this data set be cited?
   
   
   United States Fish and Wildlife Service, National Wetlands Inventory Region 5, March 2003, Connecticut Eelgrass Beds 2002 Poly.
   
   
   Online links:

   • http://www.ct.gov/deep

   
   
2. What geographic area does the data set cover?
   
   
   Bounding coordinates:

   West: -72.476148

   East: -71.874189

   North: 41.380502

   South: 41.248532
   
   
3. What does it look like?
   
   
   http://www.cteco.uconn.edu/metadata/dep/browsegraphic/eelgrassbed2002fullview.gif (GIF)

   Full view of 2002 eelgrass beds.
   
   
   http://www.cteco.uconn.edu/metadata/dep/browsegraphic/eelgrassbed2002detailview.gif (gif)

   Detail view of 2002 eelgrass beds.
   
   
4. Does the data set describe conditions during a particular time period?
   
   
   Calendar date: 6/18/02
   Currentness reference:

   ground condition

   
   
5. What is the general form of this data set?
   
   
   Geospatial data presentation form: vector digital data
   
   
6. How does the data set represent geographic features?
   
   
   1. How are geographic features stored in the data set?
      
      
      This is a Vector data set. It contains the following vector data types (SDTS terminology):

      • G-polygon (161)
      
      
   2. What coordinate system is used to represent geographic features?
      
      
      The map projection used is Lambert Conformal Conic.

      
      

      Projection parameters:

      Lambert Conformal Conic

      Standard parallel: 41.200000

      Standard parallel: 41.866667

      Longitude of central meridian: -72.750000

      Latitude of projection origin: 40.833333

      False easting: 999999.999996

      False northing: 499999.999998

      
      

      Planar coordinates are encoded using coordinate pair.

      Abscissae (x-coordinates) are specified to the nearest 0.000250.

      Ordinates (y-coordinates) are specified to the nearest 0.000250.

      Planar coordinates are specified in survey feet.

      
      

      The horizontal datum used is North American Datum of 1983.

      The ellipsoid used is Geodetic Reference System 80.

      The semi-major axis of the ellipsoid used is 6378137.000000.

      The flattening of the ellipsoid used is 1/298.257222.

      
      Vertical coordinate system definition:

      Altitude system definition:

      Altitude resolution: 1.000000

      Altitude encoding method: Explicit elevation coordinate included with horizontal coordinates

      
      
7. How does the data set describe geographic features?
   
   
   Connecticut Eelgrass Beds 2002 Poly

   OBJECTID

   Internal feature number. (Source: ESRI)
                     

   
   

   Sequential unique whole numbers that are automatically generated.

   
   

   Shape

   Feature geometry. (Source: ESRI)
                     

   
   

   Coordinates defining the features.

   
   

   ACRES

   Area of polygon in arces

   
   

   FIELD_CHECKED

   Polygon field checked -  Y = yes, N = no

   
   

   SITE_NO

   Site number of polygon

   
   

   DENSITY

   Estimated density of eelgrass - H = high, M = medium, L = low

   
   

   SIGNATURE

   Interpretation signature of True Color 1:20,000 photo

   
   

   EELGRASS

   Eelgrass present - Y= yes, N = No

   
   

   WATERSHED

   Assigned sub-watershed number

   
   

   HECTARES

   Area in Hectares (Source: ESRI)
                     

   
   

   Coordinates defining the features.

   
   

   SHAPE

   Feature geometry. (Source: ESRI)
                     

   
   

   Coordinates defining the features.

   
   

   LOCATION

   Sub-watershed in proximity to polygon

   
   

   SHAPE.area

   SHAPE.len

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   
   
   • United States Fish and Wildlife Service, National Wetlands Inventory Region 5
   
   
2. Who also contributed to the data set?
   
   
3. To whom should users address questions about the data?
   
   
   Ralph Tiner

   USFWS

   NWI Regional Coordinator

   413-253-8620 (voice)

Delineate eelgrass located in the Eastern Long Island Sound and tributaries.

1. Where did the data come from?
   
   
   Type of source media: Digital imagery and hard copy transparency

   Source scale denominator: DOQQ 1:12,000 & 1:20,000True Color aerial transparency

   
   
2. What changes have been made?
   
   

   Use of Digital Transfer Scope to create data layer from aerial photo.  Geo-reference based on State of CT DOQQ's.

   
   

   Metadata imported.

   
   

   Data sources used in this process:

   • c:\temp\xml1E.tmp

   
   

   Dataset copied.

   
   

   Data sources used in this process:

   • K:\d_ct\ct_eel_12

   
   

   Dataset copied.

   
   

   Data sources used in this process:

   • D:\gis_projects\eelgrass\2002\ct_eelgrass

   
   

   Dataset copied.

   
   

   Data sources used in this process:

   • D:\gis_projects\CoastalResourcesGISData\ct_eelgrass

   
   

1. How well have the observations been checked?
   
   

   Based on field work and photo interpretation of 1:20,000 true color photography

   
   
2. How accurate are the geographic locations?
   
   

   Based on 1:12,000 Connecticut DOQQ's and the positioning of 1:20,000 true color aerial photography using the Digital Transfer Scope (DTS)

   
   
3. How accurate are the heights or depths?
   
   

   NA

   
   
4. Where are the gaps in the data? What is missing?
   
   

   Complete, based on field work and interpretation

   
   
5. How consistent are the relationships among the observations, including topology?
   
   

   Based on 1:20,000 aerial photography

   
   

none

Who distributes the data set?


What's the catalog number I need to order this data set?


Connecticut Eelgrass Beds 2002 Poly


What legal disclaimers am I supposed to read?


How can I download or order the data?


• Availability in digital form:




Data format:	in format Shapefile, Feature Class (version ArcGIS) Size: 0.079
Network links:	http://www.ct.gov/deep



Is there some other way to get the data?


What hardware or software do I need in order to use the data set?

300 Westgate Center Drive