Additional information about the field activities from which this data set was derived are available online at
Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
Although this Federal Geographic Data Committee-compliant metadata file is intended to document the data set in nonproprietary form, as well as in ArcInfo format, this metadata file may include some ArcInfo-specific terminology.
Fukushima, Ted, and Wong, Florence L. , 2001, COVERAGE CACOAST - arc coverage of California Coast.
This is a Vector data set. It contains the following vector data types (SDTS terminology):
Horizontal positions are specified in geographic coordinates, that is, latitude and longitude. Latitudes are given to the nearest 0.002. Longitudes are given to the nearest 0.002. Latitude and longitude values are specified in Decimal Degrees.
The horizontal datum used is North American Datum of 1983.
The ellipsoid used is GRS1980.
The semi-major axis of the ellipsoid used is 6378206.4.
The flattening of the ellipsoid used is 1/294.98.
CACOASTGEO.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 8 18 F 5
25 CACOASTGEO# 4 5 B -
29 CACOASTGEO-ID 4 5 B -
33 LOCK__ID 4 10 B -
37 PHASE__ID 2 5 B -
39 OBJECT__ID 4 10 B -
43 DEPTH 2 2 I -
Oringinal file description
Name: California coastline
FS Name: COASTN27
DATE: 2 Aug 1994
DESCRIPTION:
Note: This coverage is a rebuild of the original digitized data
with greatly reduced tolerances (see below). The purpose of this
rebuild is to reduce the number of verticies that are dropped
out during an ARCINFO "CLEAN" process on a previous version of
this coverage. This data set closely resembles the original
data, and as such, users will probably want to generalize this
coverage to decrease unwanted verticies and arcs.
California shoreline from the Oregon border to the Mexico border
including Humboldt, Arcata, San Francisco, San Pablo, Suisun, Honker,
and San Diego Bays and includes offshore rocks.
This shoreline represents the mean high tide line along the coast and
bays as shown on the US Geological Survey 7.5' series quadrangles.
Vital STATISTICS:
Datum: NAD 27
Projection: Albers
Units: Meters
1st Std. Parallel: 34 00 00
2nd Std. Parallel: 40 30 00
Longitude of Origin: -120 00 00
Latitude of Origin: 00 00 00
False Easting (X shift): 0
False Northing (Y shift): -4,000,000
Source: US Geological Survey
(Various years)
Source Media: mylar, paper
Source Projection: Lambert
Source Units: meters, feet
Source Scale: 1:24,000
Capture Method: Manual digitization
Conversion Software: ARC/INFO rev. 5.0.1, 6.1.2
Data Structure: Vector
ARC/INFO Coverage type: line, point
ARC/INFO tolerances: Fuzzy: .001
Weed: .02 - .006
Number of features: 28786 arcs, 12150 points
Layer Size: 66.844 MB
Date updated: July 1994
DATA DICTIONARY:
There is only standard attribute information for the
PAT and AAT files.
DATA QUALITY ASSESSMENT:
The following are subjective comments regarding this data.
This coverage has been compiled from individually digitized 7.5'
USGS quadrangles controlled by NGS triangulation stations and individual
quad corners. RMS errors averaged under 5 meters per quad
Accuracy of this coverage is very good with respects to the original
source material.
The shoreline between the Mare Island and Cuttings Wharf quads did not match.
The Cuttings Warf quad was completed in 1949 and the Mare Island quad was
completed in 1959. The differences were assumed to have resulted from the
the different mapping dates. Consequently, the shoreline of the quad with the
later date, the Mare Island quad, was held and the shoreline of the Cuttings
Wharf quad was manually adjusted to fit.
Not all of the quadrangles were current, since we could not afford new mylar
sets. You will find some differences between our shoreline and the most
recent USGS quadrangles. This shoreline will be updated on an ongoing basis.
The marine terminal facility known as Pacific Wharf situated on the east side
of San Pablo Bay alongside the main channel of the bay and west of the Unocal's
Wharf at Oleum (Mare Island Quad), was positioned from registered and rectified
air photos. The method used to position the facility was as follows:
1. The scanned air photo was registered with the coastline coverage then rectified;
2. The facility was then digitized in arcedit with a mouse from the registered
and rectified scanned air photo.
DATA CONTACT:
Contact Name: Ted Fukushima
Contact Agency: State Lands Commission
Contact's Phone: 916-322-7813
--NOTICE--
This map and/or data has been prepared for reconnaissance and general
information purposes only.
The map and/or data has not been approved by the State Lands
Commission and does not constitute an official map or dataset of the
Commission, nor does it establish the boundary lines of any State
owned lands depicted on the map or described in the data. The map
and/or data is preliminary, is based upon available information, and is
subject to revision as the need arises. Any republication or other
distribution of this map and/or data, by any means whatsoever, must
include this disclaimer.
This file is a subset of the original data extracted from 1:24,000-scale maps by the California State Lands Commission.
Florence L. Wong
United States Geological Survey (USGS)
Geologist
USGS, MailStop 999, 345 Middlefield Road
Menlo Park, CA 94025-3561
USA
(650) 329-5327 (voice)
(650) 329-5190 (FAX)
fwong@usgs.gov
These data are intended for science researchers, students, policy makers, and the general public. The data can be used with geographic information systems (GIS) software to display geologic and oceanographic information.
(Description of accuracy of attribute information [example: elevation values] and methods used to measure the accuracy.)
(Description of the accuracy of the horizontal coordinates and methods used to test the accuracy. example: 95% of points plotted on mylar matched the source map within 1/50 inch.)
Arcs are 'land' include everything that is not 'sea', so lakes are not separately identified.
Chain-node topology present.
Are there legal restrictions on access or use of the data?
- Access_Constraints: None
- Use_Constraints:
- Please recognize the U.S. Geological Survey (USGS) as the source of this information.
Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data.
The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials.
This information is not intended for navigational purposes.
Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government.
United States Geological Survey (USGS)
c/o Guy R. Cochrane
Geophysicist
USGS, MailStop 999, 345 Middlefield Road
Menlo Park, CA 94025-3561
USA
(650) 329-5076 (voice)
(650) 329-5190 (FAX)
gcochrane@usgs.gov
Please recognize the U.S. Geological Survey (USGS) as the source of this information.Although these data have been used by the U.S. Geological Survey, U.S. Department of the Interior, no warranty expressed or implied is made by the U.S. Geological Survey as to the accuracy of the data.
The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the U.S. Geological Survey in the use of this data, software, or related materials.
United States Geological Survey (USGS)
c/o Guy R. Cochrane
Geophysicist
USGS, MailStop 999, 345 Middlefield Road
Menlo Park, CA 94025-3561
USA
(650) 329-5076 (voice)
(650) 329-5190 (FAX)
gcochrane@usgs.gov