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Short Citation:
National Geodetic Survey, 2023: Shoreline Data Rescue Project of Santa Rosa Island, CA, CA34A16, https://www.fisheries.noaa.gov/inport/item/61980.

Item Identification

Title: Shoreline Data Rescue Project of Santa Rosa Island, CA, CA34A16
Status: Completed
Creation Date: 2020
Abstract:

These data were automated to provide an accurate high-resolution historical shoreline of Santa Rosa Island, CA suitable as a geographic information system (GIS) data layer. These data are derived from shoreline maps that were produced by the NOAA National Ocean Service including its predecessor agencies which were based on an office interpretation of imagery and/or field survey. The NGS attribution scheme 'Coastal Cartographic Object Attribute Source Table (C-COAST)' was developed to conform the attribution of various sources of shoreline data into one attribution catalog. C-COAST is not a recognized standard, but was influenced by the International Hydrographic Organization's S-57 Object-Attribute standard so the data would be more accurately translated into S-57. This resource is a member of https://www.fisheries.noaa.gov/inport/item/39808

Purpose:

The shoreline and associated data layers were originally intended to support NOAA Nautical Chart production. These datasets have been cleaned and reformatted to support the efforts of supplying accurate shoreline data layers for a coastal GIS database. These datasets may be beneficial for performing change analysis for erosion and accretion studies, land use planning, determination of boundary extent, and other types of decision making.

Supplemental Information:

These shoreline data represent a vector conversion of a set of NOS raster shoreline manuscript identified by t-sheet or tp-sheet numbers. These vector data were created by contractors for NOS who vectorized georeferenced raster shoreline manuscripts using Environmental Systems Research Institute, Inc. (ESRI)(r), ArcInfo's(r) ArcScan(r) software to create individual ArcInfo coverages. The individual coverages were ultimately edgematched within a surveyed project area and appended together. The NOAA NESDIS Environmental Data Rescue Program (EDRP) funded this project. The NOAA National Ocean Service, Office for Coastal Management, developed the procedures used in this project and was responsible for project oversight. The project intent was to rescue valuable historical data and make it accessible and useful to the coastal mapping community. This process involved the conversion of original analog products to digital mapping products. This file is a further conversion of that product from a raster to a vector product that may be useful for Electronic Charting and Display Information Systems (ECDIS) and geographic information systems (GIS).

Information on shapefile attributes can be found at https://www.fisheries.noaa.gov/inport/item/60809

Keywords

Theme Keywords

Thesaurus Keyword
ISO 19115 Topic Category
oceans
NGDA Portfolio Themes
National Geospatial Data Asset
NGDA Portfolio Themes
NGDA
NGDA Portfolio Themes
Water Oceans and Coasts Theme
UNCONTROLLED
None Coast and Geodetic Survey
None Coastal Base Map
None coastal maps
None coastal survey
None Coastal Zone Map
None NOAA Shoreline
None T-sheet
None Tp-sheet

Spatial Keywords

Thesaurus Keyword
Global Change Master Directory (GCMD) Location Keywords
CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > CALIFORNIA
UNCONTROLLED
None Santa Rosa Island

Physical Location

Organization: National Geodetic Survey
City: Silver Spring
State/Province: MD

Data Set Information

Data Set Scope Code: Data Set
Data Set Type: GIS Files
Maintenance Frequency: None Planned
Data Presentation Form: Vector
Distribution Liability:

These data were generated for use by NGS during the course of its development of potential final products to fulfill its statutory mission. Although NGS is making these data available to others who may find the data of value, NGS does not warrant, endorse, or recommend the use of these data for any given purpose. The user assumes the entire risk related to the use of these data. These data are not for navigational purposes. NGS is providing these data "as is," and NGS disclaims any and all warranties, whether expressed or implied, including (without limitation) any implied warranties of merchantability or fitness for a particular purpose. In no event will NGS be liable to you or to any third party for any direct, indirect, incidental, consequential, special, or exemplary damages or lost profits resulting from any use or misuse of these data.

Data Set Credit: NOAA

Support Roles

Data Steward

CC ID: 962147
Date Effective From: 2020
Date Effective To:
Contact (Organization): NGS Communications and Outreach Branch
Email Address: ngs.infocenter@noaa.gov
Phone: (301) 713-3242
Fax: (301) 713-4172

Distributor

CC ID: 962148
Date Effective From: 2020
Date Effective To:
Contact (Organization): NGS Communications and Outreach Branch
Email Address: ngs.infocenter@noaa.gov
Phone: (301) 713-3242
Fax: (301) 713-4172

Metadata Contact

CC ID: 962149
Date Effective From: 2020
Date Effective To:
Contact (Organization): NGS Communications and Outreach Branch
Email Address: ngs.infocenter@noaa.gov
Phone: (301) 713-3242
Fax: (301) 713-4172

Point of Contact

CC ID: 962150
Date Effective From: 2020
Date Effective To:
Contact (Organization): NGS Communications and Outreach Branch
Email Address: ngs.infocenter@noaa.gov
Phone: (301) 713-3242
Fax: (301) 713-4172

Extents

Extent Group 1

Extent Group 1 / Geographic Area 1

CC ID: 962153
W° Bound: -120.250649
E° Bound: -119.96574
N° Bound: 34.0396618
S° Bound: 33.8956341

Extent Group 1 / Time Frame 1

CC ID: 962152
Time Frame Type: Discrete
Start: 1872-01-01

Spatial Information

Reference Systems

Reference System 1

CC ID: 962142

Coordinate Reference System

CRS Type: Geographic 2D
EPSG Code: EPSG:4269
EPSG Name: NAD83
See Full Coordinate Reference System Information

Access Information

Security Class: Unclassified
Data Access Constraints:

None

Data Use Constraints:

Data set is not for use in litigation. While efforts have been made to ensure that these data are accurate and reliable within the state of the art, NOAA, cannot assume liability for any damages, or misrepresentations, caused by any inaccuracies in the data, or as a result of the data to be used on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty. We do request that you credit the National Oceanic and Atmospheric Administration (NOAA) when you use these data in a report, publication, or presentation.

Distribution Information

Distribution 1

CC ID: 962154
Start Date: 2020
End Date: Present
Download URL: https://www.ngs.noaa.gov/NSDE/
Distributor: NGS Communications and Outreach Branch (2020 - Present)
Description:

Viewer to download shoreline vector files

File Type (Deprecated): Zip
Compression: Zip

URLs

URL 1

CC ID: 962144
URL: https://shoreline.noaa.gov/
Name: NOAA Shoreline Website
URL Type:
Online Resource
File Resource Format: HTML
Description:

Web page that provides information about and access to shoreline.

URL 2

CC ID: 962145
URL: https://www.ngs.noaa.gov/
Name: National Geodetic Survey
URL Type:
Online Resource
File Resource Format: HTML
Description:

Web page for NOAA's National Geodetic Survey

URL 3

CC ID: 962146
URL: https://www.ngs.noaa.gov/INFO/remote-sensing.shtml
Name: National Geodetic Survey Remote Sensing Division
URL Type:
Online Resource
File Resource Format: HTML
Description:

Web page for NOAA's National Geodetic Survey remote sensing data and imagery.

Data Quality

Horizontal Positional Accuracy:

Vector data was derived from

rectified raster images of NOS coastal survey maps using ArcInfo

processing software. These vector shoreline data are referenced to

the North American Datum of 1983. Vector shoreline extracted from

map images adequately represents the shoreline shown on original NOS

source surveys. The absolute value of the overall predicted horizontal

accuracy has not been determined. However, the

reports associated

with the project maps describe the process of producing the map source

and includes the horizontal control layout and if aerotriangulated,

the fit to control statistics. One may refer to the 6 March 1991

edition of 'Journal of Coastal Research' entitled 'Historical

Shoreline Change: Error Analysis and Mapping Accuracy' for an

independent accuracy assessment of vectorized NOS digital shoreline

conducted by the Federal Emergency Management Agency and the University

of Maryland.

Completeness Measure:

All data are clipped to the neatline representing a surveyed project boundary. Line segments which did not close were snapped by the nodes to create consistently tied strings without node dangles.

Completeness Report:

The shoreline and associated data are a representation based on a planetable survey 1872-01-01. To maintain shoreline continuity, a line with 'Shoreline/Alongshore Feature Boundary' attribution was added to the 'Shoreline' class. This feature is an artificial line that separates double-lined alongshore features from the shoreline. The 'Shoreline/Alongshore Feature Boundary' indicates to the user that a man-made alongshore feature is coincident to the shoreline in the data file. The rectangular geographic boundary limits is for data management purposes and does not infer complete surveyed coverage.

Conceptual Consistency:

The shoreline and associated data are a representation based on an office interpretation of imagery and/or fieldwork at the time of survey. The attribute accuracy was tested by creating checkplots of the coded linework. The codes depict shoreline and several alongshore features. A light table review of the checkplots revealed any inaccurate coding. Mistakes were identified and corrected. These attributes were translated into NGS's Coastal Cartographic Object Attribute Source Table (C-COAST) for data consistency. The C-COAST attributes were given symbology and visually inspected to verify attribute accuracy.

Lineage

Sources

Shoreline Delineation

CC ID: 962139
Contact Role Type: Originator
Contact Type: Organization
Contact Name: National Geodetic Survey

Process Steps

Process Step 1

CC ID: 962140
Description:

During the vectorization process, all adjoining shoreline maps in the project are displayed on a computer screen and the shoreline is traced and coded appropriately. Maps within a project generally adjoin and, therefore, there is significant agreement of linework across the borders of the shoreline maps. This results in fewer errors related to the edge-matching process. Polygon labels and attributes are assigned to features containing area so that users may shade the data to determine land, water, or man-made features. All lines were attributed with feature code values which were translated to conform with NGS's Coastal Cartographic Object Attribute Source Table attribution scheme.

Process Date/Time: 2004-07-27 00:00:00
Process Contact: National Geodetic Survey (NGS)

Catalog Details

Catalog Item ID: 61980
GUID: gov.noaa.nmfs.inport:61980
Metadata Record Created By: Maryellen Sault
Metadata Record Created: 2020-07-30 09:32+0000
Metadata Record Last Modified By: SysAdmin InPortAdmin
Metadata Record Last Modified: 2023-08-15 17:09+0000
Metadata Record Published: 2021-01-25
Owner Org: NGS
Metadata Publication Status: Published Externally
Do Not Publish?: N
Metadata Last Review Date: 2021-01-25
Metadata Review Frequency: 1 Year
Metadata Next Review Date: 2022-01-25