Somerset County, Maryland: Access Structures 2021

Metadata also available as

Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator:
Sharon Killeen, Comprehensive Coastal Inventory, Center for Coastal Resources Management, Virginia Insitute of Marine Science (VIMS), GIS Analyst
Publication_Date: 20211027
Title: Somerset County, Maryland: Access Structures 2021
Geospatial_Data_Presentation_Form: vector digital data
Description:
Abstract:
The shoreline inventory files have been generated to support the application of the Maryland Shoreline Stabilization Model (SSM), developed by the Center for Coastal Resources Management (CCRM), Virginia Institute of Marine Science (VIMS), to enhance and streamline regulatory decision making in Maryland. This shoreline inventory includes the features needed as inputs to run the SSM. The data developed for the Shoreline Inventory is based on a three-tiered shoreline assessment approach. This assessment characterizes conditions by using observations made remotely at the desktop using high resolution imagery. Somerset County was processed in 2021 referencing the most recent available Six Inch resolution aerial imagery service for the State of Maryland. The three-tiered shoreline assessment approach divides the shorezone into three regions: 1) the immediate riparian zone, evaluated for land use; 2) the bank, evaluated for height, and natural protection (i.e., marshes and beaches); and 3) the shoreline, describing the presence of shoreline structures for shore protection and recreational purposes.
Purpose: To inventory Maryland's tidal shoreline conditions.
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -76.048293
East_Bounding_Coordinate: -75.564402
North_Bounding_Coordinate: 38.279607
South_Bounding_Coordinate: 37.929327
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword:
farming, boundaries, elevation, environment, imageryBaseMapsEarthCover, location, structure
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Categories
Theme_Keyword: farming
Theme_Keyword: boundaries
Theme_Keyword: elevation
Theme_Keyword: environment
Theme_Keyword: imageryBaseMapsEarthCover
Theme_Keyword: location
Theme_Keyword: structure
Place:
Place_Keyword_Thesaurus: None
Place_Keyword:
Pocomoke Sound, Pocomoke River, Tangier Sound, Big Annemessex River, Manokin River, Wicomico 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.The contents of this dataset do not necessarily reflect the views and policies of the Environmental Protection Agency, nor does the EPA endorse trade names or recommend the use of commercial products mentioned in this document.
Data_Set_Credit:
This project has been funded wholly or in part by the United States Environmental Protection Agency State Wetland Program Development Grant CD FAIN 963822-01-0 to the Maryland Department of the Environment.
Native_Data_Set_Environment: Version 6.2 (Build 9200) ; Esri ArcGIS 10.6.1.9270
Data_Quality_Information:
Lineage:
Process_Step:
Process_Description:
The shoreline used for this county is the NOAA Continually Updated Shoreline Product (CUSP) and if necessary modified to reflect the land-water interface (shoreline) based on the latest imagery available.
Process_Date: 20210319
Process_Step:
Process_Description:
All processing steps for the shoreline inventory were generated using ArcGIS - ArcMap v10.6.1 while viewing conditions observed on MD_SixInchImagery and Google Earth Pro (checking dates from 1994 to 2018). For the land use/bank cover shapefile, arcs were split and coded for selected land use, bank height, tree fringe, and presence or absence of spit , marsh and 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: 20210512
Process_Step:
Process_Description:
QAQC was done by a different Scientist and 11% of the of shoreline was reviewed.
Process_Date: 20210617
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: 1033
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: Somerset_astru_2021
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 and Community Dock.
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 originaly 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
Enumerated_Domain:
Enumerated_Domain_Value: Community Dock
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. Community Piers are commonly longer piers with fewer than 50 slips located in a residential development. Community piers with more than 50 slips are coded as a line feature (see Marina definition). 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
Metadata_Reference_Information:
Metadata_Date: 20230629
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: Sharon Killeen
Contact_Position: GIS Analyst
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: 804-684-7534
Contact_Electronic_Mail_Address: sharon@vims.edu
Metadata_Standard_Name: FGDC Content Standard for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Generated by mp version 2.9.12 on Thu Jun 29 12:12:41 2023