Cheryl Hapke
David Reid
2006
SOCAL1920_1934 - Vectorized Shoreline of Southern California Derived from 1920-1934 Source Data
1.0
vector digital data
Open-File Report
2006-1251
Pacific Science Center, Santa Cruz, CA
U.S. Geological Survey, Coastal and Marine Geology Program
Cheryl Hapke
David Reid
2006
National Assessment of Shoreline Change: A GIS Compilation of Vector Shorelines and Associated Shoreline Change Data for the Sandy Shorelines of the California Coast
1.0
Open-File Report
2006-1251
Pacific Science Center, Santa Cruz, CA
U.S. Geological Survey, Coastal and Marine Geology Program
http://pubs.usgs.gov/of/2006/1251/
SoCal1920_1934
http://pubs.usgs.gov/of/2006/1251/SCal.zip
There are critical needs for a nationwide compilation of reliable shoreline data. To meet these needs, the U.S. Geological Survey (USGS) has produced a comprehensive database of digital vector shorelines by compiling shoreline positions from pre-existing historical shoreline databases and by generating historical and modern shoreline data. Shorelines are compiled by state and generally correspond to one of four time periods: 1800s, 1920s-1930s, 1970s, and 1998-2002. Each shoreline may represent a compilation of data from one or more sources for one or more dates provided by one or more agencies. Details regarding source are provided in the 'Data Quality Information' section of this metadata report. Shoreline vectors derived from historic sources (first three time periods) represent the high water line at the time of the survey, whereas modern shorelines (final time period) represent the mean high water line.
Historical shoreline change is considered to be a crucial element in studying the vulnerability of the national shoreline. These data are used in a shoreline change analysis for the U.S. Geological Survey (USGS) National Assessment Project.
en
1920
1934
ground condition
None planned
-120.001275
-117.123657
34.458336
32.533341
-120.001275
-117.123657
34.458336
32.533341
General
Shoreline
Historic Shoreline
Shoreline Change Rate
Linear Regression Rate
Endpoint Rate
Baseline
Beach Erosion
Beach Nourishment
LIDAR
T-sheet
Tp-sheet
Coastal Survey Map
U.S. Geological Survey
USGS
Coastal and Marine Geology Program
CMGP
ESRI polyline shapefile
ISO 19115 Topic Category
oceans
oceans and estuaries
oceans and coastal
elevation
General
California
United States
None
This data set is not to be used for navigational purposes.
Public domain data from the U.S. government are freely redistributable with proper metadata and source attribution. Please recognize the U.S. Geological Survey (USGS) as the source of this information.
Bruce Richmond
U.S. Geological Survey, Pacific Science Center
mailing and physical address
400 Natural Bridges Drive
Santa Cruz
Ca
95060
USA
(831) 427-4450
(831) 427-4748
Monday through Friday, 8 a.m. to 5 p.m., Eastern Standard Time
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.780
Cheryl J. Hapke
David Reid
Bruce M. Richmond
Peter Ruggiero
Jeff List
2006
National Assessment of Shoreline Change Part 3: Historical Shoreline Change and Associated Coastal Land Loss Along Sandy Shorelines of the California Coast
1.0
Open-File Report
2006-1219
Pacific Science Center, Santa Cruz, CA
U.S. Geological Survey, Coastal and Marine Geology Program
http://pubs.usgs.gov/of/2006/1219/
Shapefile
There is significant agreement of linework between adjacent shorelines. Shorelines were checked for accuracy, but no edgematching attempts were made between adjacent shorelines even if slight offsets existed.
This shoreline data adequately represented the shoreline at the time of the survey. Remaining gaps in this data, if applicable, are a consequence of non-existing data or existing data that did not meet quality assurance standards.
The maximum estimated positional error for this shoreline is 13.9 meters. Please visit our full report on shoreline change in the Coastline of California (http://pubs.usgs.gov/of/2006/1219/), under the heading 'Uncertainties and Errors', for a complete explanation of the measurement error.
2006
Vector Shorelines from Georeferenced Scanned Coastal Maps
vector digital data
Historic Shoreline Database
1930s Shoreline
Silver Spring, Maryland
U.S. Department of Commerce, National Oceanic and Atmospheric Administration
U.S. Department of Commerce, National Oceanic and Atmospheric Administration (NOAA), National Environmental Satellite, Data, and Information Service (NESDIS), and National Ocean Service (NOS)http://www.csc.noaa.gov/shoreline/http://mapfinder.nos.noaa.govSenior cartographer,
Address: 1315 East-West Highway
City: Silver Spring
State: Maryland
Postal_Code: 20910-3282
Country: USA
Contact_Voice_Telephone: (301) 713-3226
Contact_Facsimile_Telephone: (301) 713-4176
Contact_Electronic_Mail_Address: info_center@ngs.noaa.gov
paper
1920
1934
ground condition
NOS T-Sheets
NOAA NOS Topographic Sheets (t-sheet or tp-sheet maps)
Shorelines from one or more sources were sought in an effort to develop a single shoreline for each time period. Digital shorelines, if available from another agency, were acquired. If no digital shorelines were available or if a data set was incomplete, T-sheets were requested from NOAA and received as scanned raster images. T-sheets were geo-registered using ERDAS Imagine geographic imaging software by placing 6-10 well-spaced ground control points at gridline intersections. Some T-sheets may have required additional coordinate transformation information from NOAA to account for datum offsets between historical datums (USSD) and modern datums (NAD27 or NAD83). Datum transformations were applied to GCP coordinates prior to registration. Total RMS error for the rectification process was maintained below 1 pixel, which translates to approximately 4m at a scale of 1:20,000 and 1.5m at a scale of 1:10,000. Geo-registered T-sheets were loaded in ArcView and vector shorelines were digitized.
Quality assessments were performed and shorelines were edited to remove any overlap between adjacent shorelines. No edgematching between adjacent shorelines was attempted. Finally, shorelines from all sources were merged to produce a single shoreline for the period. The final shoreline was coded with 6 attribute fields (ID, Type, Date, Descr, Source, and Accuracy) required for the Digital Shoreline Analysis System (DSAS), which was used to calculate shoreline change rates. The attributes reflect the source of the data and the original survey year.
Unknown
Bruce Richmond
U.S. Geological Survey, Pacific Science Center
mailing and physical address
400 Natural Bridges Drive
Santa Cruz
Ca
95060
USA
(831) 427-4450
(831) 427-4748
Monday through Friday, 8 a.m. to 5 p.m., Pacific Standard Time
Data were projected from UTM zone 10 to geographic with a datum shift from NAD27 to NAD83
Tool: ArcGIS > ArcToolbox > Toolboxes > Data Management Tools > Project
Command issued:
GEOGCS['GCS_North_American_1983',DATUM['D_North_American_1983',SPHEROID['GRS_1980',6378137.0,298.257222101]],PRIMEM['Greenwich',0.0],UNIT['Degree',0.0174532925199433]] # NAD_1927_To_NAD_1983_NADCON
20070716
Emily Himmelstoss
U.S. Geological Survey
Geologist
mailing and physical address
384 Woods Hole Road
Woods Hole
MA
02543-1598
USA
508-548-8700 x2262
(508) 457-2310
ehimmelstoss@usgs.gov
ArcGIS 9.2 Toolbox
Vector
String
516
Simple
FALSE
FALSE
TRUE
Polyline
516
North American Datum of 1983
Geodetic Reference System 80
6378137.000000
298.257222
GCS_North_American_1983
Decimal degrees0.0000000.000000
SoCal1920_1934
Vector Shoreline from NOS T-Sheets
USGS
516
Feature Class
FID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
0
FID
OID
0
4
Shape
Feature geometry.
ESRI
Coordinates defining the features.
0
Shape
Geometry
0
0
ID
Feature number.
U.S. Geological Survey
1
40677
ID
Number
8
ACCURACY
Position accuracy of feature.
U.S. Geological Survey
0
0
meters
ACCURACY
String
20
TYPE
Type of feature.
U.S. Geological Survey
Shoreline
Vector shoreline.
U.S. Geological Survey
TYPE
String
10
DESCR
Detailed description of the feature.
U.S. Geological Survey
Describes additional characteristics of the feature.
DESCR
String
64
SOURCE
Agency that provided feature or data used to create feature.
U.S. Geological Survey
NOAA NOS T-Sheets
NOAA
U.S. Geological Survey
SOURCE
String
32
DATE_DATE_Number3
U.S. Geological Survey
mailing and physical address
Pacific Science Center
Santa Cruz
Ca
95060
USA
400 Natural Bridges Drive
(831) 427-4450
(831) 427-4748
Monday through Friday, 8 a.m. to 5 p.m., Eastern Standard Time
Downloadable Data: USGS Open-File Report 2006-1251
Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, these data and information are provided with the understanding that they are not guaranteed to be usable, timely, accurate, or complete. Users are cautioned to consider carefully the provisional nature of these data and information before using them for decisions that concern personal or public safety or the conduct of business that involves substantial monetary or operational consequences. Conclusions drawn from, or actions undertaken on the basis of, such data and information are the sole responsibility of the user.
Neither the U.S. Government nor any agency thereof, nor any of their employees, contractors, or subcontractors, make any warranty, express or implied, nor assume any legal liability or responsibility for the accuracy, completeness, or usefulness of any data, software, information, apparatus, product, or process disclosed, nor represent that its use would not infringe on privately owned rights.
Trade, firm, or product names and other references to non-USGS products and services are provided for information only and do not constitute endorsement or warranty, express or implied, by the USGS, USDOI, or U.S. Government, as to their suitability, content, usefulness, functioning, completeness, or accuracy.
SHP
20060901
ESRI polyline shapefile
Seven files comprise the ArcView shapefile: <filename>.dbf, <filename>.shp, <filename>.shx, <filename>.prj, <filename>.avl, <filename>.sbx, <filename>.sbn
zip archive
0.348
0.348
http://pubs.usgs.gov/of/2006/1251/SCal.zip
http://pubs.usgs.gov/of/2006/1251/#gis
Data may be downloaded via the World Wide Web (WWW).
None
These data are available in Environmental Systems Research Institute (ESRI) shapefile format. The user must have ArcGIS or ArcView 3.0 or greater software to read and process the data file. In lieu of ArcView or ArcGIS, the user may utilize another GIS application package capable of importing the data. A free data viewer, ArcExplorer, capable of displaying the data is available from ESRI at www.esri.com.
20070716
U.S. Geological Survey
mailing and physical address
Pacific Science Center
400 Natural Bridges Drive
Santa Cruz
Ca
95060
USA
(831) 427-4450
(831) 427-4748
Monday through Friday, 8 a.m. to 5 p.m., Eastern Standard Time
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time
en
NoneNonehttp://www.esri.com/metadata/esriprof80.htmlESRI Metadata Profile20070301
Microsoft Windows XP Version 5.1 (Build 2600) Service Pack 2; ESRI ArcCatalog 9.1.0.780
-120.001275
34.458336
32.533341
-117.123657
1
SoCal1920_1934
-120.001275
34.458336
32.533341
-117.123657
1
002
Local Area Network
file://\\gisdata\data01\regional\westcoast\shoreline_change\ca_coast\geo\socal\SoCal1920_1934.shp
0.348
Shapefile
20060729
20070716
13562200
FALSE
20070301
FALSE
19223900
17261400
{A953BBAE-1E13-4D2C-8504-90A2AD155767}
20070716
dataset
ISO 19115 Geographic Information - Metadata
DIS_ESRI1.0
GCS_North_American_1983
516