U.S. Vector Shoreline Derived from NOAA Nautical Charts

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Metadata:

Identification_Information:
Citation:
Citation_Information:
Originator:
Department of Commerce (DOC), National Oceanic and Atmospheric Administration (NOAA), Office of Coast Survey (OCS), Coast Survey Development Laboratory (CSDL)
Publication_Date: 20011001
Title: U.S. Vector Shoreline Derived from NOAA Nautical Charts
Edition: First
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Vector Shoreline Series
Issue_Identification: kapp number
Publication_Information:
Publication_Place: Silver Spring, MD
Publisher: NOAA's Ocean Service, Office of Coast Survey (OCS)
Online_Linkage: <http://nauticalcharts.noaa.gov/csdl/ctp/cm_vs.htm>
Description:
Abstract:
The vector shoreline data were originally derived from NOAA Nautical Charts using a process and software developed by the Coast Survey Development Laboratory, Cartographic & Geospatial Technology Program (CGTP). The products' target scale of 1:20,000 allows for applications at a higher spatial resolution that was not possible with the prior 1:80,000 digital shoreline. The derived vector shoreline data are provided in the shapefile format used in GIS (Geographic Information Systems) environments.
Purpose:
Digital shoreline data are beneficial for many applications. Coastal zone managers apply vector shoreline data to plan for disaster mitigation, in environmental decision making, and for urban planning. The National Geodetic Survey (NGS) Remote Sensing Division and the Office of Coast Survey (OCS) Hydrographic Surveys Division use shoreline data for change analysis. While the NOAA nautical charts contain shoreline data in raster format, the derived vector shoreline data can be used in GIS environments.

Supplemental_Information:
Vector shoreline data are intended for GIS applications. The derived Mean High Water and Mean Lower Low Water outlines may not always correspond to these well-defined shoreline datums. The vector shoreline data are not intended to be used for navigation nor to be interpreted as the legal shoreline. Data accuracy is checked against the source nautical charts. NOAA assumes no liability for use of these data.

Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 200110
Ending_Date: 200310
Currentness_Reference: publication date
Status:
Progress: In work
Maintenance_and_Update_Frequency: As needed.
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: 141
East_Bounding_Coordinate: -61.1
North_Bounding_Coordinate: 74.8
South_Bounding_Coordinate: -14.6
Keywords:
Theme:
Theme_Keyword_Thesaurus: None
Theme_Keyword: Vector Shoreline
Theme_Keyword: Geographic Information Systems
Theme_Keyword: Topography
Theme_Keyword: Shape File
Theme_Keyword: NOAA Nautical Chart
Theme_Keyword: Aerial Photography and Shoreline Mapping
Theme_Keyword: Oceans
Place:
Place_Keyword_Thesaurus: None
Place_Keyword: U.S. Exclusive Economic Zone
Place_Keyword: U.S. Territories
Place_Keyword: U.S. Waters
Place_Keyword: Coast
Access_Constraints: none
Use_Constraints:
Vector shoreline data are intended for GIS applications. The derived Mean High Water and Mean Lower Low Water outlines may not always correspond to these well-defined shoreline datums. The derived vector data are not intended to be used for navigation nor to be interpreted as the legal shoreline. Data accuracy is checked against the source nautical charts. NOAA assumes no liability for use of these data.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office of Coast Survey (OCS), Coast Survey Development Laboratory (CSDL)
Contact_Position: Cartographic & Geospatial Technology Programs
Contact_Address:
Address_Type: mailing and physical address
Address: 1315 East West Highway, N/CS12
City: Silver Spring
State_or_Province: MD
Postal_Code: 20910
Country: U.S.A
Contact_Voice_Telephone: (301) 713-2645 x143
Contact_Electronic_Mail_Address: Matthew.Austin@noaa.gov
Native_Data_Set_Environment:
Windows NT 4.0 Operating System, Intergraph's CIT Format Binary Raster, MicroStation/IRASB/GEOVEC, FME SR2000, ArcView 8, Coast Survey Development Laboratory developed programs
Cross_Reference:
Citation_Information:
Originator:
National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office of Coast Survey (OCS), Coast Survey Development Laboratory (CSDL), Cartographic & Geospatial Technology Program (CGTP)
Publication_Date: 200110 - 200310
Title: Vector Shoreline
Edition: First
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Vector Shoreline Series
Issue_Identification: kapp number
Publication_Information:
Publication_Place: Silver Spring, MD
Publisher: NOAA's Ocean Service, Office of Coast Survey (OCS)
Online_Linkage: <http://nauticalcharts.noaa.gov>
Data_Quality_Information:
Attribute_Accuracy:
Attribute_Accuracy_Report:
Data accuracy is checked against the source nautical charts. Prior to 1995, the paper charts were composed manually. In 1995, the paper charts were scanned to create the raster charts. Both the paper and raster charts are composed from the same digital files. The derived vector data contain all the errors and cartographic interpretations as in the original raster nautical charts.
Logical_Consistency_Report:
The projection of the source data set has been altered to non-projected geographic positions. The data set contains topology but has not been corrected for spatial relationships between charts. While the topology is good, lines may not always intersect where intended. Polygons intersected by the neatline close along that border.
Completeness_Report:
A complete list of selection criteria, generalization, and definitions used to determine what is included in the data set are completely outlined in the NOAA Nautical Chart Manual Seventh (1992) Edition. On a 1:40,000 scale chart, a feature could have a potential error of 40 to 80 meters (about 130-160 feet) due to scale alone. This is often the cause of the "ship on the pier" situation, where the vessel tied up at the pier appears on the navigation system to be on the pier rather than alongside. Another source of this type of discrepancy is that symbols on a chart of a given scale may be a representation for multiple real features that are too close together to be shown at chart scale. Similarly, symbols may be displaced from their original location for legibility and presentation. The NOAA Nautical Chart Manual has an extensive description of the horizontal datum.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report:
Nautical charts are updated as part of an ongoing process to create a cartographic representation of the best available data collected through the years employing a variety of data collection technology and techniques and provided to the Office of Coast Survey using numerous different scales, datums, and projections. As technology has allowed for a drastic increase in positional accuracy historical data has not been superseded for many areas. The availability of digital chart products and Differential Global Positioning System (DGPS) has drastically changed navigation. Navigation systems using DGPS for locating a vessel's position on the earth have put mariners in a unique predicament due to a false perception of greater positional accuracy of features portrayed on the charts. In many cases, the DGPS is more accurate than the surveying technology that was used to put the soundings and features on the nautical chart, paper or raster. The derived Mean High Water and Mean Lower Low Water vector data may not always correspond to these well-defined shoreline datums. The vector shoreline data are not intended to be used for navigation nor to be interpreted as the legal shoreline. Data accuracy is checked against the source nautical charts. NOAA assumes no liability for use of these data.

Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
Depths are biased for shoals. Charts use multiple vertical datums (Mean Higher High Water [MHHW]; Mean High Water [MHW]; Mean Sea Level [MSL]; Mean Low Water [MLW]; Low Water Datum [LWD]; Mean Lower Low Water [MLLW]; Gulf Coast Low Water Datum [GCLWD].) The NOAA Nautical chart manual has an extensive description of the vertical datum used. Sounding datums used in coastal areas for nautical charting are determined by local observations, ideally over a period of 19 years. The official time period over which tide observations are taken to obtain mean values for tidal datums has been standardized by NOS. The present National Tidal Datum Epoch is from 1960 through 1978. There have been two epochs used previously this century; 1924 through 1942, and 1941 through 1959. The individual chart title block documents the datum used for that chart. Nautical charts are updated as part of an ongoing process to create a cartographic representation of the best available data collected through the years employing a variety of data collection technology and techniques. As technology has allowed for a drastic increase in survey accuracy historical data has not been superseded for many areas. Therefore, soundings found on a single chart may contain multiple collection dates and be only accurate as the technology used to collect them allowed. The derived Mean High Water and Mean Lower Low Water outlines may not always correspond to these well-defined shoreline datums. The derived vector data are not intended to be used for navigation nor to be interpreted as the legal shoreline. Data accuracy is checked against the source nautical charts. NOAA assumes no liability for use of these data.

Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator:
National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office of Coast Survey (OCS), Coast Survey Development Laboratory (CSDL), Marine Charting Division
Publication_Date: 19950101
Title: Nautical Chart
Geospatial_Data_Presentation_Form: map
Series_Information:
Series_Name: Nautical Charts
Issue_Identification: kapp number
Publication_Information:
Publication_Place: Silver Spring, MD
Publisher: NOAA's Ocean Service, Office of Coast Survey (OCS)
Source_Scale_Denominator: 10,000 to 80,000
Type_of_Source_Media: raster digital data
Source_Time_Period_of_Content:
Time_Period_Information:
Range_of_Dates/Times:
Beginning_Date: 19950101
Ending_Date: Present
Source_Currentness_Reference: publication date
Source_Citation_Abbreviation: Source Nautical Chart
Source_Contribution: Vector shoreline data were derived from source nautical chart.
Process_Step:
Process_Description:
Vector shoreline data were originally derived from NOAA nautical charts using a process and software developed by CGTP. The derived Mean High Water and Mean Lower Low Water outlines were originally processed from the 762 dpi binary raster files that are used to produce nautical charts. The derived shoreline data were converted from paper-charted units to geographic coordinates, then imported to ESRI shapefile (vector) format.
Source_Used_Citation_Abbreviation: Source Nautical Chart
Process_Date: 20010801
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office of Coast Survey (OCS), Coast Survey Development Laboratory (CSDL)
Contact_Position: Cartographic & Geospatial Technology Programs
Contact_Address:
Address_Type: mailing and physical address
Address: 1315 East West Highway, N/CS12
City: Silver Spring
State_or_Province: MD
Postal_Code: 20910
Country: U.S.A
Contact_Voice_Telephone: (301) 713-2645 x143
Contact_Electronic_Mail_Address: Matthew.Austin@noaa.gov
Spatial_Data_Organization_Information:
Indirect_Spatial_Reference: The Coastal United States
Direct_Spatial_Reference_Method: Vector
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Geographic:
Latitude_Resolution: 0.01
Longitude_Resolution: 0.01
Geographic_Coordinate_Units: decimal seconds
Geodetic_Model:
Horizontal_Datum_Name: NAD 83
Ellipsoid_Name: Geodetic Reference System 80
Semi-major_Axis: 6,378,137.0
Denominator_of_Flattening_Ratio: 298.257222101
Vertical_Coordinate_System_Definition:
Depth_System_Definition:
Depth_Datum_Name:
Mean Higher High Water, Mean High Water, Mean Sea Level, Mean Low Water, Low Water Datum, Mean Lower Low Water, Gulf Coast Low Water Datum
Depth_Resolution: 1
Depth_Distance_Units: feet, meters, fathoms
Depth_Encoding_Method: Explicit depth coordinate included with horizontal coordinates
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Shoreline
Entity_Type_Definition:
The line of contact between land and a body of water. On National Ocean Service nautical charts, the shoreline approximates the Mean High Water line.
Entity_Type_Definition_Source: NOAA Nautical Chart Manual Seventh (1992)
Attribute:
Attribute_Label: charted shoreline
Attribute_Definition:
These data are derived from the charted Mean High Water and Mean Lower Low Water lines, though the derived outlines may not always correspond to these well-defined shoreline datums.
Attribute_Definition_Source: NOAA Nautical Chart Manual Seventh (1992)
Attribute_Domain_Values:
Enumerated_Domain:
Enumerated_Domain_Value: Mean High Water Line (MHWL)
Enumerated_Domain_Value_Definition:
The line on a chart which represents the intersection of land with the water surface at the elevation of mean high water.
Enumerated_Domain_Value_Definition_Source: NOAA Nautical Chart Manual Seventh (1992)
Enumerated_Domain:
Enumerated_Domain_Value: Mean Lower Low Water (MLLW)
Enumerated_Domain_Value_Definition:
The line on a chart which represents the intersection of land with the water surface at the elevation of mean lower low water.
Enumerated_Domain_Value_Definition_Source: NOAA Nautical Chart Manual Seventh (1992)
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office of Coast Survey (OCS), Coast Survey Development Laboratory (CSDL)
Contact_Position: Cartographic & Geospatial Technology Programs
Contact_Address:
Address_Type: mailing and physical address
Address: 1315 East West Highway, N/CS12
City: Silver Spring
State_or_Province: MD
Postal_Code: 20910
Country: U.S.A.
Contact_Voice_Telephone: (301) 713-2645 x143
Contact_Electronic_Mail_Address: Matthew.Austin@noaa.gov
Resource_Description: Downloadable Data
Distribution_Liability:
The vector shoreline data are intended for GIS applications. The derived Mean High Water and Mean Lower Low Water outlines may not always correspond to these well-defined shoreline datums. The derived vector data are not intended to be used for navigation nor to be interpreted as the legal shoreline. Data accuracy is checked against the source nautical charts. NOAA assumes no liability for use of these data.

Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: ESRI shapefile
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://historicals.ncd.noaa.gov/cm_vs_query.asp>
Fees: None
Metadata_Reference_Information:
Metadata_Date: 20050301
Metadata_Review_Date: 20050430
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization:
National Oceanic and Atmospheric Administration (NOAA), National Ocean Service (NOS), Office of Coast Survey (OCS), Coast Survey Development Laboratory (CSDL)
Contact_Position: Cartographic & Geospatial Technology Programs
Contact_Address:
Address_Type: mailing and physical address
Address: 1315 East West Highway, N/CS12
City: Silver Spring,
State_or_Province: MD
Postal_Code: 20910
Country: U.S.A.
Contact_Voice_Telephone: (301) 713-2645 x143
Contact_Electronic_Mail_Address: Matthew.Austin@noaa.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Generated by mp version 2.8.16 on Sun May 08 05:54:21 2005