Northampton County Tidal Marshes (nh_marshes)

Metadata:

Identification_Information
Data_Quality_Information
Spatial_Data_Organization_Information
Spatial_Reference_Information
Entity_and_Attribute_Information
Distribution_Information
Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Comprehensive coastal Inventory Program
Publication_Date: 2011
Title:: Northampton County Tidal Marshes (nh_marshes)
Geospatial_Data_Presentation_Form: vector digital data
Online_Linkage: http://ccrm.vims.edu/gis_data_maps/shoreline_inventories/index.html

Description:

Abstract:: The Virignia Institute of Marine Science published the first Tidal marsh Inventories for Northampton County in 1977. Using high resolution color infra-red imagery from 2009 a new Tidal Marsh Inventory has been developed. 2011. Marsh boundaries were generated using heads-up digitizing techniques at a scale of 1:1,000. Each marsh polygon was classified by morphologic type: fringe, extensive, embayed, or marsh island. Marshes were ground-truthed in the field where a community type index was assigned to each marsh based on plant community make-up. Each marsh was also coded with a marsh number which corresponds to the original 1977 delineation. This will provide an opportunity to review changes that have occurred in the marshes over time.
Purpose:: To maintain and update an inventory of the distribution of tidal marshes for the Commonwealth f Virginia.
Supplemental_Information:: Imagery used to generate the tidal marsh boundaries is a product of the Virginia Base Mapping Program of the Virginia Information Technology Agency.

Time_Period_of_Content:

Time_Period_Information:

Multiple_Dates/Times:

Single_Date/Time:

Calendar_Date: 5-31-11

Single_Date/Time:

Calendar_Date: 6-1-11

Single_Date/Time:

Calendar_Date: 6-2-11

Single_Date/Time:

Calendar_Date: 6-3-11

Single_Date/Time:

Calendar_Date: 6-13-11

Single_Date/Time:

Calendar_Date: 6-14-11

Single_Date/Time:

Calendar_Date: 6-15-11

Single_Date/Time:

Calendar_Date: 7-6-11

Single_Date/Time:

Calendar_Date: 7-15-11

Single_Date/Time:

Calendar_Date: 7-18-11

Single_Date/Time:

Calendar_Date: 7-19-11

Single_Date/Time:

Calendar_Date: 7-20-11

Single_Date/Time:

Calendar_Date: 7-28-11

Single_Date/Time:

Calendar_Date: 8-15-11

Currentness_Reference:

ground condition

ground condition

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -76.029906
East_Bounding_Coordinate: -75.655541
North_Bounding_Coordinate: 37.556543
South_Bounding_Coordinate: 37.082687

Access_Constraints: None

Use_Constraints:

The boundaries should not be used for jurisdictional determineations

The boundaries should not be used for jurisdictional determineations

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Marcia Berman
Contact_Organization: Virginia Institute of Marine Science

Contact_Position: Director of Comprehensive Coastal Inventory Program

Contact_Address:

Address_Type: mailing and physical address
Address:: P.O.Box 1346 Greate Road
City: Gloucester Point
State_or_Province: VA
Postal_Code: 23062
Country: USA

Contact_Voice_Telephone: 804-684-7188

Contact_Facsimile_Telephone: 804-684-7179

Contact_Electronic_Mail_Address: marcia@vims.edu

Data_Set_Credit:

Center for Coastal Resources Management, Virginia Institute of Marine Science, College of William and Mary

Center for Coastal Resources Management, Virginia Institute of Marine Science, College of William and Mary

Native_Data_Set_Environment:

Microsoft Windows Vista Version 6.1 (Build 7601) Service Pack 1; ESRI ArcCatalog 9.3.1.3000

Data_Quality_Information:

Lineage:

Process_Step:

Process_Description:: The 2011 TMI (Tidal Marsh Inventory) shapefile was created by visual photo interpretation and heads up digitizing of recent (2009) high resolution (6") infrared aerial photography at a scale of 1:1000. This scale was picked as a compromise between taking full advantage of the resolution and time constraints. Marsh information from previous shoreline surveys was used, particularly in identifying narrow fringe marshes. The latest NWI was also used. This delineation was completed prior to the fieldwork and then corrected as noted in the field.

Process_Step:

Process_Description:: Dataset copied.
Source_Used_Citation_Abbreviation:: N:\cci\portfolios\northampton_portfolio\final_shapefiles\NH_marshes
Process_Date: 20111201
Process_Time: 13484400

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 3550

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Planar:

Grid_Coordinate_System:

Grid_Coordinate_System_Name: Universal Transverse Mercator

Universal_Transverse_Mercator:

UTM_Zone_Number: 18

Transverse_Mercator:

Scale_Factor_at_Central_Meridian: 0.999600
Longitude_of_Central_Meridian: -75.000000
Latitude_of_Projection_Origin: 0.000000
False_Easting: 500000.000000
False_Northing: 0.000000

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 0.000000
Ordinate_Resolution: 0.000000

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222

Entity_and_Attribute_Information:

Detailed_Description:

Entity_Type:

Entity_Type_Label: NH_marshes

Attribute:

Attribute_Label: FID

Attribute_Definition:

Internal feature number.

Internal feature number.

Attribute_Definition_Source:

ESRI

ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:: Sequential unique whole numbers that are automatically generated.

Attribute:

Attribute_Label: Shape

Attribute_Definition:

Feature geometry.

Feature geometry.

Attribute_Definition_Source:

ESRI

ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:: Coordinates defining the features.

Attribute:

Attribute_Label: Id

Attribute:

Attribute_Label: Shape_Area

Attribute_Definition:

Area of feature in internal units squared.

Area of feature in internal units squared.

Attribute_Definition_Source:

ESRI

ESRI

Attribute_Domain_Values:

Unrepresentable_Domain:: Positive real numbers that are automatically generated.

Attribute:

Attribute_Label: Tmi_no

Attribute:

Attribute_Label: MFIPS

Attribute:

Attribute_Label: Tmi_Type
Attribute_Definition:: marsh type

Attribute:

Attribute_Label: Comments

Attribute:

Attribute_Label: Field
Attribute_Definition:: field checked

Attribute:

Attribute_Label: marshclass
Attribute_Definition:: marsh type

Attribute:

Attribute_Label: acres

Distribution_Information:

Resource_Description: Downloadable Data

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Transfer_Size: 62.819

Metadata_Reference_Information:

Metadata_Date: 20111201

Metadata_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Sharon Killeen
Contact_Organization: Comprehensive Coastal Inventory

Contact_Position: GIS Programmer/Analyst

Contact_Address:

Address_Type: mailing and physical address
Address:: P.O.Box 1346 Greate Road
City: Gloucester Point
State_or_Province: VA
Postal_Code: 23062
Country: USA

Contact_Voice_Telephone: 804-684-7534

Contact_Facsimile_Telephone: 804-684-7179

Contact_Electronic_Mail_Address: sharon@vims.edu

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Time_Convention: local time

Metadata_Extensions:

Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Profile_Name: ESRI Metadata Profile