U.S. Vector Shoreline extracted from NOAA Nautical Chart 11369: Lakes Pontchartrain and Maurepas

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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 extracted from NOAA Nautical Chart 11369: Lakes Pontchartrain and Maurepas
Edition: First
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Issue_Identification: kapp number: 54
Publication_Information:
Publication_Place: Silver Spring, MD
Publisher: NOAA's Ocean Service, Office of Coast Survey
Online_Linkage: <http://nauticalcharts.noaa.gov>
Larger_Work_Citation:
Citation_Information:
Originator: S.J. Williams
Originator: J.M. Reid
Originator: V. Cross
Originator: C. Polloni
Publication_Date: 2003
Title:
Coastal Erosion and Wetland Change in Louisiana: Selected USGS Products
Edition: 1.0
Geospatial_Data_Presentation_Form: vector digital data
Series_Information:
Series_Name: Digital Data Series
Issue_Identification: 79
Publication_Information:
Publication_Place: Woods Hole Field Center, Woods Hole, MA
Publisher: U.S. Geological Survey, Coastal and Marine Geology Program
Online_Linkage: <https://pubs.usgs.gov/dds/dds79>
Description:
Abstract:
For the first time charted shoreline can be extracted from the nautical charts using a process and software developed by the Coast Survey Development Laboratory (CGTP). The target scale of this project, 1:20,000, will allow for a host of new uses that were not possible with the prior 1:80,000 product and serve as a compliment to that data set. The program extracts both the Mean Lower Low Water and Mean High Water Line from the nautical charts and provides them in ESRI Shape file format to the public.
Purpose:
The data is intended for use as a vector query tool that represents the charted shoreline of the area. Vector shoreline data are beneficial in many GIS applications. Coastal zone managers need shoreline data for response to natural and manmade disasters, in environmental decision making, and for boundary purposes. Internally, the National Geodetic Survey (NGS) Remote Sensing Division and the OCS Hydrographic Surveys Division use the vector data for change analysis. Since the NOS charts contain shoreline in raster format these data are needed to clip and query from in a GIS environment. To ensure a match to charted shoreline, that data set is derived from the nautical chart.
Supplemental_Information:
The data is intended for use as a tool for GIS analysis. It is in no way intended for navigational uses or to be used as the legal shoreline. The data accuracy is checked against its source nautical chart only. NOAA assumes no liability for use of this 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: -90.599947
East_Bounding_Coordinate: -89.732831
North_Bounding_Coordinate: 30.396523
South_Bounding_Coordinate: 30.004953
Keywords:
Theme:
Theme_Keyword_Thesaurus: General
Theme_Keyword: Vector Shoreline
Theme_Keyword: Geographic Information Systems
Theme_Keyword: Topography
Theme_Keyword: NOAA Nautical Chart
Theme_Keyword: NOAA Nautical Chart Number 11369
Theme_Keyword: Shape File
Theme_Keyword: Aerial Photography and Shoreline Mapping
Place:
Place_Keyword_Thesaurus: General
Place_Keyword: U.S. Exclusive Economic Zone
Place_Keyword: U.S. Territories
Place_Keyword: U.S. Waters
Place_Keyword: Coast
Place_Keyword: Lake Pontchartrain
Place_Keyword: Lake Maurepas
Place_Keyword: Louisiana
Place_Keyword: Gulf Coast
Access_Constraints: none
Use_Constraints:
The data is intended for use as a tool for GIS analysis. It is in no way intended for navigational uses or to be used as the legal shoreline. The data accuracy is checked against its source nautical chart only. NOAA assumes no liability for use of this 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: Chief, Cartographic & Geospatial Technology Program
Contact_Address:
Address_Type: mailing and physical address
Address: 1315 East-West Hwy. N/CS12
City: Silver Spring
State_or_Province: MD
Postal_Code: 20910
Country: USA
Contact_Voice_Telephone: (301) 713-2645
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: Coastal Map
Edition: First
Geospatial_Data_Presentation_Form: raster digital data
Series_Information:
Series_Name: Coastal Map Series
Issue_Identification: kapp number 54
Publication_Information:
Publication_Place: Silver Spring, MD
Publisher: NOAA's Ocean Service, Office of Coast Survey
Online_Linkage: <http://nauticalcharts.noaa.gov>
Data_Quality_Information:
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 data accuracy is checked against its source nautical chart only. It is in no way intended for navigational uses or to be used as the legal shoreline. The data accuracy is checked against its source nautical chart only. NOAA assumes no liability for use of this data.
Vertical_Positional_Accuracy:
Vertical_Positional_Accuracy_Report:
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, shoreline extracted from a single chart may contain multiple collection dates and be only accurate as the technology used to collect it allowed. The data accuracy is checked against its source nautical chart only. It is in no way intended for navigational uses or to be used as the legal shoreline. NOAA assumes no liability for use of this 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
Series_Information:
Series_Name: Nautical Charts
Issue_Identification: kapp number 54
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: Nautical Chart 11369 for Lakes Pontchartrain and Maurepas
Source_Contribution: Vector shoreline was extracted from source nautical chart
Process_Step:
Process_Description:
Charted shoreline is extracted from the nautical charts using a process and software developed by Cartographic & Geospatial Technology Program (CGTP). The product is easy to update. Because of the automation in the shoreline extraction process, shoreline for a single chart can be created, quality controlled, and provided to users in just a few hours. Hence, it is a simple task to update the shoreline for a specific chart when a new topographic survey is applied to the next edition nautical chart. CGTP began developing and perfecting the automated system of charted shoreline extraction using MicroStation and ArcView. The program extracts both the Mean Lower Low Water and Mean High Water Line from the nautical charts. This is accomplished by using the same 762 dpi binary raster files that are used in chart production. Lines are extracted from both the marsh (low water tint) and buff (land tint) plates allowing the entire chart to be collected in a matter of minutes. Next the lines are manually inspected for quality using the raster nautical chart, and modifications are made, if necessary. Those lines are then converted from the paper-charted units to geographic positions and imported to the ArcView Shape file format. Another quality-control inspection is made on the final files using the original raster nautical chart.
Source_Used_Citation_Abbreviation: Nautical Chart 11369 for Lakes Pontchartrain and Maurepas
Process_Date: 20010801 to Present
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: Chief, Cartographic & Geospatial Technology Program
Contact_Address:
Address_Type: mailing and physical address
Address: 1315 East West Hwy. N/CS12
City: Silver Spring
State_or_Province: MD
Postal_Code: 20910
Country: USA
Contact_Voice_Telephone: (301) 713-2645
Process_Step:
Process_Description:
Dowloaded shapefiles for NOAA Nautical Chart 11369 for Lakes Pontchartrain and Maurepas, Gulf Coast Region from <http://nauticalcharts.noaa.gov> and modifed the metadata to reflect this geographic area.
Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: U.S. Geological Survey
Contact_Person: Jamey M. Reid
Contact_Position: IT Specialist (Data Management)
Contact_Address:
Address_Type: mailing and physical address
Address: Woods Hole Field Center
Address: 384 Woods Hole Road
City: Woods Hole
State_or_Province: MA
Postal_Code: 025453-1598
Country: USA
Contact_Voice_Telephone: (508) 457-2204
Contact_Facsimile_Telephone: (508) 457-2310
Contact_Electronic_Mail_Address: jreid@usgs.gov
Process_Step:
Process_Description:
Combined the information from 54gd20 and 54mar shapefiles into one coastline for Lakes Pontchartrain and Maurepas. Simplified the vector data in an attempt to reflect just the shoreline and not extraneous information.
Process_Contact:
Contact_Information:
Contact_Person_Primary:
Contact_Person: VeeAnn Cross
Contact_Organization: U.S. Geological Survey
Contact_Position: Marine Geologist
Contact_Address:
Address_Type: mailing and physical address
Address: 384 Woods Hole Rd.
City: Woods Hole
State_or_Province: MA
Postal_Code: 02543-1598
Contact_Voice_Telephone: 508-548-8700x2251
Contact_Facsimile_Telephone: 508-457-2310
Spatial_Data_Organization_Information:
Indirect_Spatial_Reference: The Coastal United States
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: 241
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: 6378137.000000
Denominator_of_Flattening_Ratio: 298.257222
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: shoreline point of reference
Attribute_Definition:
These data depict shoreline as referenced to two datums: Mean High Water Line, and Mean Lower Low Water.
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 Line (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)
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: CHART
Attribute:
Attribute_Label: LONGITUDE
Attribute:
Attribute_Label: LATITUDE
Attribute:
Attribute_Label: POLYGON
Attribute:
Attribute_Label: KAPP
Distribution_Information:
Distributor:
Contact_Information:
Contact_Person_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: Chief, Cartography & Geospatial Technology Program
Contact_Address:
Address_Type: mailing and physical address
Address: 1315 East West Hwy. N/CS12
City: Silver Spring
State_or_Province: MD
Postal_Code: 20910
Country: USA
Contact_Voice_Telephone: (301) 713-2645
Resource_Description: Downloadable Data
Distribution_Liability:
The data is intended for use as a tool for GIS analysis. It is in no way intended for navigational uses or to be used as the legal shoreline. The data accuracy is checked against its source nautical chart only. NOAA assumes no liability for use of this data.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 0.164
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: <http://historicals.ndc.noaa.gov/cm_vs_query.asp>
Metadata_Reference_Information:
Metadata_Date: 20011122
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: Chief, Cartography & Geosptial Technology Program
Contact_Address:
Address_Type: mailing and physical address
Address: 1315 East West Hwy. N/CS12
City: Silver Spring
State_or_Province: MD
Postal_Code: 20910
Country: USA
Contact_Voice_Telephone: (301) 713-2645
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: <http://www.esri.com/metadata/esriprof80.html>
Profile_Name: ESRI Metadata Profile
Generated by mp version 2.7.3 on Mon Jul 21 10:39:44 2003