Hanover County: Access Structures 2017

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator:
Kallie Brown, Comprehensive Coastal Inventory, Center for Coastal Resources Management, Virginia Insitute of Marine Science (VIMS), GIS Specialist
Publication_Date: 20170930
Title: Hanover County: Access Structures 2017
Geospatial_Data_Presentation_Form: vector digital data
Description:
Abstract:
Shoreline Situation Reports (SSR) were first generated by VIMS in the 1970s to report the condition and status of the shore lands. The SSR series were published in hardcopy on a county by county basis for each of the Tidewater Virginia localities. The reports were intended to assist planners, managers, and regulators in decisions pertaining to management of coastal areas and natural resources therein. This report continues the process which updates and expands earlier reports. Data collected describes conditions in the immediate riparian zone, the bank, and along the shore.
Purpose: To inventory Virginia's tidal shoreline conditions.
Supplemental_Information:
There are five shapefiles associated with Hanover County inventory database: Hanover_lubc_2017, Hanover_astru_2017, Hanover_sstru_2017, Hanover_tm_2017, and Hanover_beaches_2017. Hanover_lubc_2017 (land use and bank cover for Hanover County) is a linear shapefile containing data about land use, tree fringe, bank height, bank cover, and spit along the shoreline. Hanover_sstru_2017 (Hanover County shoreline structures) is a linear shapefile delineating hard structures in place at the shoreline (bulkhead, dilapidated bulkhead, riprap, wharf, unconventional, debris, marina < 50 slips, marina > 50 slips, jetty, marsh toe revetment, groinfield and breakwaters). Hanover_astru_2017 (Hanover County access structures) is a point shapefile with locations of docks, dilapidated docks, boathouses, and private and public boat ramps. Hanover_tm_2017 (Hanover County tidal marshes) shows the location, size, species and type of tidal marshes in Hanover County. Hanover_beaches_2017 is a linear shapefile showing the presence of beaches on the shoreline of Hanover County. The attributes of these five shapefiles are explained in the Entity and Attribute Information section below.
Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Ending_Date: 20170210
Currentness_Reference: ground condition at time of imagery
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -77.581428
East_Bounding_Coordinate: -77.125393
North_Bounding_Coordinate: 37.966111
South_Bounding_Coordinate: 37.617860
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword:
Land use, Land cover, Shoreline conditions, Shoreline structures, Hardened structures, Access structures, Riparian land use, Shoreline inventory
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword: farming
Theme_Keyword: boundaries
Theme_Keyword: elevation
Theme_Keyword: inlandWaters
Theme_Keyword: location
Theme_Keyword: structure
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: Pamunkey River, North Anna River
Access_Constraints: None
Use_Constraints:
These data should not be used for jurisdictional permit determinations beyond providing general shoreline condition or status information. These data have not been surveyed to property boundaries.The Comprehensive Coastal Inventory Program (CCI) at VIMS performs a service by distributing data generated by either CCI or public agencies which offer data without restriction or charge. CCI assumes no responsibility for data accuracy or precision, metadata completeness or correctness for digital information. CCI assumes no liability for misuse of any data which may arise as a result of any alteration, conversion, or combination with other data sources. As well, the timeliness and scale of these products must be considered when evaluating appropriate use.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Virginia Institute of Marine Science
Contact_Person: Marcia Berman
Contact_Position: Director, Comprehensive Coastal Inventory Program (CCI)
Contact_Address:
Address_Type: mailing and physical
Address: 1375 Greate Road, P.O. Box 1346
City: Gloucester Point
State_or_Province: Virginia
Postal_Code: 23062
Country: US
Contact_Voice_Telephone: 804-684-7188
Native_Data_Set_Environment:
Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; Esri ArcGIS 10.4.0.5524
Data_Quality_Information:
Lineage:
Process_Step:
Process_Description:
A shoreline for Hanover County was created using 2013 Virginia Base Mapping Program (VBMP) imagery at a scale of 1:1000 as a backdrop and using ArcGIS version 10.2. Using this as a baseline, the shoreline inventory was remotely generated using two sources: Google Earth 2015 imagery and 2013 high resolution imagery available through Bing Maps.
Process_Date: 20170107
Process_Step:
Process_Description:
All processing steps for the shoreline inventory were generated using ArcGIS - ArcMap v10.2 while viewing conditions observed in 2015 Bing high resolution oblique imagery and 2013 imagery from the Virginia Base Mapping Program (VBMP). Using the latest VBMP 2013 imagery as a background, conditions visible on shore were used to code a digital shoreline, created at a scale of 1:1000. Conditions were verified using Bing Birds Eye and VBMP 2009 imagery. For the land use/bank cover shapefile, arcs were split and coded for land use, bank height, bank cover, tree fringe, and presence or absence of spit. For the beaches shapefile, arcs were coded for the presence or absence of a beach. For the access structure shapefile, points were placed where structures (dock, dilapidated dock, boathouse, public ramp, and private ramp) are located on the shoreline. For the shoreline structure shapefile, arcs were coded for bulkhead, delapidated bulkhead, riprap, unconventional, debris, wharf, breakwater, groinfield, jetty, marsh toe revetment, and marina >50 slips and <50 slips.
Process_Date: 20170217
Process_Step:
Process_Description:
The first and second step in the QAQC process involves complete checks of shoreline coding by a GIS Programmer/Analyst and a Marine Scientist.
Process_Date: 20170610
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Vector
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Entity point
Point_and_Vector_Object_Count: 25
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: NAD 1983 UTM Zone 18N
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.9996
Longitude_of_Central_Meridian: -75.0
Latitude_of_Projection_Origin: 0.0
False_Easting: 500000.0
False_Northing: 0.0
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: coordinate pair
Coordinate_Representation:
Abscissa_Resolution: 0.000000002220024164500956
Ordinate_Resolution: 0.000000002220024164500956
Planar_Distance_Units: meter
Geodetic_Model:
Horizontal_Datum_Name: D North American 1983
Ellipsoid_Name: GRS 1980
Semi-major_Axis: 6378137.0
Denominator_of_Flattening_Ratio: 298.257222101
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Hanover_astru_2017
Attribute:
Attribute_Label: FID
Attribute_Definition: Internal feature number.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: Esri
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: Id
Attribute:
Attribute_Label: PNTSTRUC
Attribute_Definition:
Structures that allow access to the water. Access structure types: Dock, Dilapidated Dock, Boathouse, Private Ramp and Public Ramp.
Attribute_Definition_Source:
VIMS Shoreline & Tidal Marsh Inventory Glossary, Center for Coastal Resources Management
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Dock / Pier
Enumerated_Domain_Value_Definition:
In this survey, a dock or pier is a structure, generally constructed of wood, which is built perpendicular or parallel to the shore. These are typical on private property, particularly residential areas. However, there are exceptions where they are used in working waterfront communities, and may be disconnected from the shore. In general docks provide access to the water, a mooring for vessels, and a venue for recreational activities. They are mapped as point features. Pier length is not surveyed.
Enumerated_Domain_Value_Definition_Source:
VIMS Shoreline & Tidal Marsh Inventory Glossary, Center for Coastal Resources Management
Enumerated_Domain:
Enumerated_Domain_Value: Dilapidated Dock
Enumerated_Domain_Value_Definition:
A pier which has failed due to deterioration from age or storm damage is classified as a dilapidated pier. The remnants of this structure may be original pilings only.
Enumerated_Domain_Value_Definition_Source:
VIMS Shoreline & Tidal Marsh Inventory Glossary, Center for Coastal Resources Management
Enumerated_Domain:
Enumerated_Domain_Value: Private Ramp
Enumerated_Domain_Value_Definition:
Boat ramps are used to launch vessels of all types. They are usually constructed of concrete, but wood and gravel ramps are also found. Point identification of boat ramps does not discriminate based on type, size, material, or quality of the launch. This inventory attempts to distinguish, when possible, private versus public ramps. Ramps located in privately owned, commercial marinas and residential communities are classified as private.
Enumerated_Domain_Value_Definition_Source:
VIMS Shoreline & Tidal Marsh Inventory Glossary, Center for Coastal Resources Management
Enumerated_Domain:
Enumerated_Domain_Value: Public Ramp
Enumerated_Domain_Value_Definition:
Boat ramps are used to launch vessels of all types. They are usually constructed of concrete, but wood and gravel ramps are also found. Point identification of boat ramps does not discriminate based on type, size, material, or quality of the launch. This inventory attempts to distinguish, when possible, private versus public ramps. Ramps located in privately owned, commercial marinas and residential communities are classified as private.
Enumerated_Domain_Value_Definition_Source:
VIMS Shoreline & Tidal Marsh Inventory Glossary, Center for Coastal Resources Management
Enumerated_Domain:
Enumerated_Domain_Value: Boathouse
Enumerated_Domain_Value_Definition:
A boathouse is considered any covered structure alongside a dock or pier built to cover a boat. They include true “houses” for boats with roof and siding, as well as awnings that offer only overhead protection. Since nearly all boathouses have adjoining piers, piers are not surveyed separately, but are assumed. Boathouses may be difficult to see in aerial photography.
Enumerated_Domain_Value_Definition_Source:
VIMS Shoreline & Tidal Marsh Inventory Glossary, Center for Coastal Resources Management
Attribute:
Attribute_Label: Inv_Update
Attribute_Definition: Inventory update information
Attribute_Definition_Source: processor
Attribute_Domain_Values:
Unrepresentable_Domain:
Text describing the imagery used to update the shoreline inventory.
Metadata_Reference_Information:
Metadata_Date: 20170523
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
Comprehensive Coastal Inventory, Center for Coastal Resources Management, Virginia Insitute of Marine Science (VIMS)
Contact_Person: Kallie Brown
Contact_Position: GIS Specialist
Contact_Address:
Address_Type: mailing and physical
Address: 1375 Greate Road, P.O. Box 1346
City: Gloucester Point
State_or_Province: Virginia
Postal_Code: 23062
Country: US
Contact_Voice_Telephone: 804-684-7140
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Use_Constraints:
These data should not be used for jurisdictional permit determinations beyond providing general shoreline condition or status information. These data have not been surveyed to property boundaries.The Comprehensive Coastal Inventory Program (CCI) at VIMS performs a service by distributing data generated by either CCI or public agencies which offer data without restriction or charge. CCI assumes no responsibility for data accuracy or precision, metadata completeness or correctness for digital information. CCI assumes no liability for misuse of any data which may arise as a result of any alteration, conversion, or combination with other data sources. As well, the timeliness and scale of these products must be considered when evaluating appropriate use.
Generated by mp version 2.9.12 on Tue May 23 14:09:10 2017