Richmond County Shoreline Situation Report - 2003

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, Virginia Institute of Marine Science

Publication_Date: 2004

Title: Richmond County Shoreline Situation Report - 2003

Geospatial_Data_Presentation_Form: vector digital data

Series_Information:

Series_Name:

Special Report in Applied Marine Science and Ocean Engineering No. ? of the Virginia Institute of Marine Science

Issue_Identification: SRAMSOE No. ?

Publication_Information:

Publication_Place: Gloucester Point, Virginia

Publisher: Virginia Institute of Marine Science

Online_Linkage: <URL:<http://www.vims.edu/ccrm/gis/gisdata.html>

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 three coverages that are included in this metadata file; rich_lubc, rich_astru, rich_sstru. Rich_lubc (land use and bank cover for Richmond County) is an arc coverage containing data about the land use, bank height, bank cover, erosion, marsh, and beach status along the shoreline. Rich_sstru (Richmond County shoreline structures) is an arc coverage delineating hard structures in place for shoreline protection (bulkhead, riprap, groin fields). Rich_astru (Richmond County access structures) coverage is a point coverage with locations of docks, ramps, and boathouses. The attributes of these three coverages are explained in the Entity and Attribute Information section below.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20010430

Ending_Date: 20010516

Currentness_Reference: ground condition at time of survey.

Status:

Progress: Complete

Maintenance_and_Update_Frequency: None Planned

Spatial_Domain:

Bounding_Coordinates:

West_Bounding_Coordinate: -76.95738437

East_Bounding_Coordinate: -76.57822406

North_Bounding_Coordinate: 38.09401628

South_Bounding_Coordinate: 37.79143145

Keywords:

Theme:

Theme_Keyword_Thesaurus: none

Theme_Keyword: Shoreline condition

Theme_Keyword: Shoreline structures

Place:

Place_Keyword_Thesaurus: none

Place_Keyword: Virginia

Place_Keyword: Richmond County

Place_Keyword: Rappahannock River

Place_Keyword: Totuskey Creek

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.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Marcia Berman

Contact_Organization: Virginia Institute of Marine Science (VIMS)

Contact_Position: Director Comprehensive Coastal Inventory Program

Contact_Address:

Address_Type: mailing address

Address: P.O. Box 1346

City: Gloucester Point

State_or_Province: Virginia

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:

Collection of the data would not have been possible without the cooperation of VIMS Vessel Center. The following CCI staff participated in the data collection: Marcia Berman, Harry Berquist, Julie Herman, Sharon Killeen, Tami Rudnicky, Dan Schatt, Becky Thomas, and Helen Woods.

Native_Data_Set_Environment:

SunOS, 5.7, sun4u UNIX ARC/INFO version 7.2.1

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report:

The attributes were compared to original GPS data logs for accuracy. Errors were corrected where noted.

Logical_Consistency_Report:

Chain-node topology present. Linear coverages were built for line and point coverages were built for points.

Completeness_Report:

All Richmond County shoreline that has a minimum depth of 2 feet at mean low water was surveyed. Areas inaccessible by boat have been remote surveyed (land use, marsh, beach, and structures coded by looking at the digital orthophoto quarter quads).

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Shoreline structures were recorded with a GPS unit as the boat moved along the shoreline. Data was transferred from the GPS boat track to an existing digital shoreline coverage by projecting data to the shoreline at a 90 degree angle from the boat track. Rectified digital orthophoto quads were used as a background coverage to aid in data positioning. Dock and boathouse point data were aligned with docks on the images. Land use features were placed along the shore so changes in land use were coincident with changes illustrated in the imagery. Positional accuracy for data that has been corrected with imagery is +/- 2 meters (equivalent to image resolution). Data not visable on the imagery (bulkheads, riprap, etc.) has a positional accuracy of +/- 11 meters. Accuracy was determined by comparing digitally processed data locations to onsite GPS ground surveys collected at random.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: U.S. Geological Survey

Publication_Date: 1994

Title: Digital Orthophoto Quadrangles

Geospatial_Data_Presentation_Form: remote-sensing image

Publication_Information:

Publication_Place: Reston, VA

Publisher: U.S. Geological Survey

Type_of_Source_Media: color infra-red digital imagery

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 19940312

Ending_Date: 19940402

Source_Currentness_Reference: ground condition

Source_Citation_Abbreviation: DOQQ

Source_Contribution:

Serves as a background coverage in the map portfolios. Used to accurately position land use and cover data. Used to create a new digital shoreline coverage that serves as the base shoreline for shoreline conditions.

Process_Step:

Process_Description:

Data was collected by a three-person field crew (two data collectors and one boat operator) using two hand-held Trimble GeoExplorers GPS Units, while navigating along the shoreline. A data dictionary designed for the inventory was installed on each GPS Unit. One data collector records natural features including land use, bank height, bank cover, presence of marsh or beach, and shoreline stability. A second person collects data on the hardened structures: riprap, bulkheads, docks, boatramps, etc. Point features (docks, boathouses, ramps) were surveyed with a ten second observation recorded at 1 reading/second. Linear features were surveyed kinematically at a rate of one observation every 3 seconds.

Process_Date: 2001

Process_Step:

Process_Description:

Data from the GPS units were postprocessed on a PC with Trimble Pathfinder Office software. Postprocessing included differential correction using base station data collected at the VIMS laboratory. Corrected data is converted into ArcInfo coverages and transfered to a UNIX workstation for further processing.

Process_Date: 2001

Process_Step:

Process_Description:

Using ArcInfo and ERADAS Imagine in the UNIX environment, a new base shoreline was created by digitizing the land-water interface illustrated on the DOQQs. Richmond County boundary (determined from the USGS DLG digital dataset (1990)) set the limits for Richmond shoreline.

Source_Used_Citation_Abbreviation: DOQQ

Process_Date: 2002

Process_Step:

Process_Description:

In the UNIX ArcInfo environment, boat-track points and arcs were manually shifted to the base shoreline. Arcs were split and points were moved to locations on the shoreline that were perpendicular to the original locations on the boat-track. Shoreline arcs segments and points were coded, and the coverages were visually checked for attribute accuracy between coded shoreline and boat-track data.

Source_Used_Citation_Abbreviation: DOQQ

Process_Date: 2002

Process_Step:

Process_Description:

Land use, dock, and boathouse locations were digitally checked and repositioned if necessary with DOQQ imagery displayed as a background coverage. This was done using ArcInfo's ArcEdit capabilities.

Source_Used_Citation_Abbreviation: DOQQ

Process_Date: 2002

Process_Step:

Process_Description: Data received a final check in hard copy format.

Process_Date: 2003

Process_Step:

Process_Description:

A portfolio containing twentytwo 1:12,000 scale plates was created for Richmond County. Each plate shows three maps: riparian land use, bank and buffer conditions, and shoreline features. DOQQ imagery is displayed in the background to provide users with additional information.

Process_Date: 2003

Spatial_Data_Organization_Information:

Direct_Spatial_Reference_Method: Vector

Point_and_Vector_Object_Information:

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: String

Point_and_Vector_Object_Count: 1614

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: String

Point_and_Vector_Object_Count: 650

SDTS_Terms_Description:

SDTS_Point_and_Vector_Object_Type: Point

Point_and_Vector_Object_Count: 431

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: .9996

Longitude_of_Central_Meridian: -75W

Latitude_of_Projection_Origin: 0.0

False_Easting: 500000

False_Northing: 0.0

Planar_Coordinate_Information:

Planar_Coordinate_Encoding_Method: coordinate pair

Coordinate_Representation:

Abscissa_Resolution: 3.296775

Ordinate_Resolution: 3.296775

Planar_Distance_Units: meters

Geodetic_Model:

Horizontal_Datum_Name: North American Datum of 1983

Ellipsoid_Name: GRS1980

Semi-major_Axis: 6378206.4

Denominator_of_Flattening_Ratio: 294.98

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview:

Below is a listing of the attributes found in the three coverages (_lubc, _sstru, and _astru). The first seven items found in the .aat files and the first four items in the .pat file are ArcInfo generated. Rich_lubc contains the following items; FEATUREC or land use, has the following values: ' ' = no data, forested, scrub-shrub, grass, residential, commercial, bare, agriculture, and paved. HEIGHTC is bank height with 0 or ' ' = no data, 0 - 5 feet, 5 - 10 feet, 10 - 30 feet, and greater than 30 feet. COVERC describes the bank cover with values of 0 or ' ' = no data, bare or less than 25% covered, partial coverage (25-75% coverage), and full coverage (greater than 75% coverage). EROSC is the bank erosion condition. Values can be 0 or ' ' for no data, low erosion, high erosion, or undercut. MARSHC provides information on the status of the marsh; 0 or ' ' = no data, marsh eroding, marsh not eroding, and no marsh. BEACHC defines 0 or ' ' = no data, beach eroding, beach not eroding, and no beach. REMOTE refers to how the data was gathered: a blank value or an "n" indicates the data was collected with the GPS unit in the field, a "y" indicates that the shoreline attributes where determined from the DOQQ imagery. However, an empty REMOTE value along with other empty values indicates no data was collected. STRUCTURE contains the types of shoreline structures found in Richmond County: bulkhead, riprap, jetty, breakwater, groinfields, miscellaneous (bricks, timbers, concrete blocks, tires, etc.), and marina. PNTSTRUC contains the types of access structures or points of interest found within the county: docks/piers, boathouses, public and private ramps, and other points of interest.

RICH_LUBC.AAT:

COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
    1  FNODE#                 4     5     B      -
    5  TNODE#                 4     5     B      -
    9  LPOLY#                 4     5     B      -
   13  RPOLY#                 4     5     B      -
   17  LENGTH                 4    12     F      3
   21  RICH_LUBC#             4     5     B      -
   25  RICH_LUBC-ID           4     5     B      -
   29  FEATUREC              25    25     C      -
   54  HEIGHTC                6     6     C      -
   60  COVERC                 8     8     C      -
   68  EROSC                 10    10     C      -
   78  MARSHC                20    20     C      -
   98  PHRAGC                 4     4     C      -
  102  BEACHC                20    20     C      -
  122  REMOTE                 2     2     C      -

RICH_SSTRU.AAT:

COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
    1  FNODE#                 4     5     B      -
    5  TNODE#                 4     5     B      -
    9  LPOLY#                 4     5     B      -
   13  RPOLY#                 4     5     B      -
   17  LENGTH                 4    12     F      3
   21  RICH_SSTRU#            4     5     B      -
   25  RICH_SSTRU-ID          4     5     B      -
   29  STRUCTURE             30    30     C      -
   59  REMOTE                 2     2     C      -


RICH_ASTRU.PAT:

COLUMN   ITEM NAME        WIDTH OUTPUT  TYPE N.DEC  ALTERNATE NAME
    1  AREA                   4    12     F      3
    5  PERIMETER              4    12     F      3
    9  RICH_ASTRU#            4     5     B      -
   13  RICH_ASTRU-ID          4     5     B      -
   17  PNTSTRUC              30    30     C      -
   47  REMOTE                 2     2     C      -

Entity_and_Attribute_Detail_Citation: none

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Virginia Institute of Marine Science (VIMS)

Contact_Position: Director Comprehensive Coastal Inventory Program

Contact_Address:

Address_Type: mailing address

Address: P.O. Box 1346

City: Gloucester Point

State_or_Province: Virginia

Postal_Code: 23062

Country: USA

Contact_Voice_Telephone: (804) 684-7188

Contact_Instructions: Contact via email

Contact_Electronic_Mail_Address: marcia@vims.edu

Distribution_Liability:

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.

Metadata_Reference_Information:

Metadata_Date: 20030402

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: Virginia Institute of Marine Science (VIMS)

Contact_Person: Tamia Rudnicky

Contact_Position: GIS Programmer/Analyst

Contact_Address:

Address_Type: mailing address

Address: P.O. Box 1346

City: Gloucester Point

State_or_Province: Virginia

Postal_Code: 23062

Country: USA

Contact_Voice_Telephone: (804) 684-7181

Contact_Facsimile_Telephone: (804) 684-7179

Contact_Electronic_Mail_Address: tamia@vims.edu

Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001-1998

Metadata_Access_Constraints: none

Metadata_Use_Constraints: none