Piankatank River Shoreline Situation Report - 1999

Metadata also available as

Metadata:


Identification_Information:

Citation:
Citation_Information:
Originator:
Comprehensive Coastal Inventory, Virginia Institute of Marine Science
Publication_Date: 1999
Title: Piankatank River Shoreline Situation Report - 1999
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: (example: USGS OFR 98-999)
Publication_Information:
Publication_Place: Gloucester Point, Virginia
Publisher: Virginia Institute of Marine Science

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 marks the beginning of a process which updates and expands the ealier 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; piank_lubc, piank_astru, piank_sstru. Piank_lubc (land use and bank cover for the Piankatank River) is an arc coverage containing data about the land use, bank height, erosion, marsh, and beach status along the shoreline. Piank_sstru (Piankatank shoreline structures) contains data on the linear hard structure for shoreline protection (bulkhead, riprap, groin fields). Piank_astru (Piankatank access structures) coverage is a point coverage with locations of docks, ramps, and boathouses. The attributes of these three coverages are explained in the Enity and Attribute Information section below.

Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1998
Currentness_Reference: ground condition at time of survey

Status:
Progress: Complete
Maintenance_and_Update_Frequency: Unknown

Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -78.05104456
East_Bounding_Coordinate: -75.12198116
North_Bounding_Coordinate: 39.02173844
South_Bounding_Coordinate: 36.46689335

Keywords:
Theme:
Theme_Keyword_Thesaurus: none
Theme_Keyword: Shoreline condition
Theme_Keyword: Shoreline structures
Place:
Place_Keyword_Thesaurus: none
Place_Keyword: Virginia
Place_Keyword: Chesapeake Bay
Place_Keyword: Piankatank 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.

Point_of_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: Marcia Berman
Contact_Organization: Virgina Institute of Marine Science (VIMS)
Contact_Position:
Director of Comprehensive Coastal Inventory Program (CCI)
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, Donna Bilkovic, Mike Campana, Sharon Dewing, Dan Schatt, Kevin Skunda, Harry Berquist, Carl Hershner, and Tami Rudnicky.

Native_Data_Set_Environment:
SunOS, 5.5.1, 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 shoreline adjacent to the Piankatank River and its tributaries that has a minimum depth of 2 feet at mean low water was surveyed.

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 by projecting the data onto the shoreline at a 90 degree angle. Rectified digital orthophoto quads were used in the background to aid in the data positioning. Dock and boathouse point data were aligned with the docks on the images. Land use features were placed along the shore so that changes in land use matched the changes in the imagery. Positional accuracy for data that has been corrected with imagery is +/- 2 meters. Data that is not visable on the imagery (bulkheads, riprap, etc.) has an accuracy of +/- 11 meters. Accuracy was determined by comparing digitally processed data locations with onsite GPS ground surveys collected at random to determine accuracy.

Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
Comprehensive Coastal Inventory Program, Virginia Institute of Marine Science
Publication_Date: 1991
Title: Mean High Water Shoreline Position, Virginia
Geospatial_Data_Presentation_Form: vector digital data
Source_Scale_Denominator: 24,000
Type_of_Source_Media: mylar
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 1964
Ending_Date: 1987
Source_Currentness_Reference: date of USGS map
Source_Citation_Abbreviation: shl
Source_Contribution:
Digital shoreline serves as base shoreline for shoreline conditions.

Source_Information:
Source_Citation:
Citation_Information:
Originator: USGS
Publication_Date: 1994
Title: National Aerial Photography Program (NAPP) color photography
Geospatial_Data_Presentation_Form: remote-sensing image
Publication_Information:
Publication_Place: Sioux Falls, SD
Publisher: USGS/EROS Data Center
Source_Scale_Denominator: 40,000
Type_of_Source_Media: color infra-red diapositive
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 1994
Source_Currentness_Reference: ground condition
Source_Citation_Abbreviation: NAPP
Source_Contribution:
Serves as a background coverage in the map portfolios. Used to accurately position land cover and shore structure locations.

Process_Step:
Process_Description:
The NAPP color diapositives were scanned to create digital images. This process was performed by Image Scans Inc. Wheat Ridge, CO.
Source_Used_Citation_Abbreviation: NAPP
Process_Date: 1996

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, and navigating along the shoreline. A data dictionary designed for the inventory was installed on each GPS Unit. One data collector recorded natural features including land use, bank height, presence of marsh or beach, and shoreline stability. A second person collected 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: 1998

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 was converted into ArcInfo coverages and transfered to a UNIX workstation for further processing.
Process_Date: 1998

Process_Step:
Process_Description:
In the UNIX ArcInfo environment, boat-track points and arcs were manually shifted to the base shoreline (SHL). 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: shl
Process_Date: 1998

Process_Step:
Process_Description:
Land use, dock, and boathouse locations were digitally checked and repositioned if necessary with digital NAPP photography displayed in the background. This was done using ArcInfo's ArcEdit capabilities.
Source_Used_Citation_Abbreviation: NAPP
Process_Date: 1999

Process_Step:
Process_Description:
A portfolio containing twelve 1:12000 scale plates was created for the Piankatank River. Each plate shows three maps; riparian land use, bank and buffer conditions, and shoreline features. NAPP photography is displayed as a background image on each map.
Process_Date: 1999


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: 1598
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: Point
Point_and_Vector_Object_Count: 1648
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 511
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: String
Point_and_Vector_Object_Count: 1349


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: 0.9996
Longitude_of_Central_Meridian: -75 W
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: 2.950747489929
Ordinate_Resolution: 2.950747489929
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, _astru, and _sstru). The first seven items found in the .aat files and the first four items in the .pat file are ArcInfo generated. The item UPLAND with the value of 1 defines the land/water boundary. FIPS contains the county codes as defined by the Federal government. FEATURE is land use and contains the following values: 1 = forested, 2 = scrub-shrub, 3 = grass, 4 = residential, 5 = commercial, 6 = bare. HEIGHT is the bank height with 1 = 0 - 5 feet, 2 = 5 - 10 feet, and 3 = greater than 10 feet. EROS is the bank erosion condition where 1 is low erosion and 2 is high erosion. MARSH defines 1 = marsh eroding, 2 = marsh not eroding, and 3 = no marsh. BEACH defines 1 = beach eroding, 2 = beach not eroding, and 3 = no beach. An item with a value of zero means either the structure is not present (as found in the structure coverage), or that the shoreline in question was not surveyed (as found in the land use/bank cover coverage). BTHS, DOCK, and RAMP are present if the value is 1. PTINT contains points of interest which have been incorporated into the _sstru coverage. BLKHD (bulkhead), RPRP (riprap), MRNA (marina), GROIN, BREAKWATER, and JETTY are present with a value of 1.

PIANK_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  PIANK_LUBC#            4     5     B      -
   25  PIANK_LUBC-ID          4     5     B      -
   29  UPLAND                 1     1     I      -
   30  FIPS                   4     4     I      -
   34  FEATURE                1     1     I      -
   35  HEIGHT                 1     1     I      -
   36  EROS                   1     1     I      -
   37  MARSH                  1     1     I      -
   38  BEACH                  1     1     I      -



PIANK_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  PIANK_ASTRU#           4     5     B      -
   13  PIANK_ASTRU-ID         4     5     B      -
   17  BTHS                   2     2     I      -
   19  DOCK                   2     2     I      -
   21  RAMP                   2     2     I      -
   23  PTINT                 30    30     C      -


PIANK_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  PIANK_SSTRU#           4     5     B      -
   25  PIANK_SSTRU-ID         4     5     B      -
   29  UPLAND                 1     1     I      -
   30  FIPS                   4     4     I      -
   34  BLKHD                  4     4     I      -
   38  RPRP                   4     4     I      -
   42  MRNA                   4     4     I      -
   46  GROIN                  4     5     B      -
   50  BREAKWATER             4     5     B      -
   54  JETTY                  4     5     B      -

Entity_and_Attribute_Detail_Citation: none


Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Virgina Institute of Marine Science (VIMS)
Contact_Position: Director of 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 generated by other agencies. 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: 19991005
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Virginia Institute of Marine Science (VIMS)
Contact_Person: Tamia Rudnicky
Contact_Position: GIS Programmer
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

Generated by mp version 2.5.4 on Thu Aug 17 09:42:42 2006