National Oceanic & Atmospheric Administration - US Department of Commerce (collector, compiler, publiser of paper map)
United States Geologica Survey (collector, compiler, publiser of paper map)
Long Island Sound Study (compiler and publisher of original digital data)
Long Island Sound Resource Center (publisher of 2007 Edition of digital data)
19960715
Unknown
Bathymetric Contours in Meters for Long Island Sound
2007 Edition
vector digital data
Groton, Connecticut USA
Long Island Sound Resource Center
The 2007 edition represents a copy of the original data that was projected from UTM Zone 18N, NAD 27 to the Connecticut State Plane Coordinate System, NAD 83 by the Department of Environmental Protection for the Long Island Sound Resources Center. CT DEP also modified attribute names and values to make them easier to understand and use. Note, the citation name for the original data in UTM is "Bathymetric Contours from NOAA Charts as Organized for the LISSGIS Library - 1 m".
http://www.lisrc.uconn.edu/
Bathymetric data of Long Island Sound developed from 1:100,000-scale NOAA bathymetry and USGS topographic-bathymetry maps. Depth units are meters.
The Long Island Sound Study developed these digital data from 1:100,000-scale National Oceanic & Atmospheric Administration (NOAA) and United States Geological Survey (USGS) maps as a general reference to the depth of water in Long Island Sound. In 1996, these data were digitized from paper maps by the Long Island Sound Study (http://www.longislandsoundstudy.net) and incorporated into a Long Island Sound GIS database. Not intended for maps printed at map scales greater or more detailed than 1:100,000 scale (1 inch = 1,578 feet.)
1984
1986
1989
publication date
None planned
-73.949354
-71.993697
41.499945
40.768754
ISO 19115 Topic Category
elevation
environment
oceans
none
bathymetry
contour
depth
U.S. Department of Commerce, 1987, Codes for the Identification of the States, the District of Columbia and the Outlying Areas of The United States, and Associated Areas (Federal Information Processing Standard 5-2): Washington, DC, National Institute of Standards and Technology.
Connecticut
CT
New York
NY
Rhode Island
RI
none
Long Island Sound
U.S. Department of Commerce, 1995, Countries, Dependencies, Areas of Special Sovereignty, and Their Principal Administrative Divisions (Federal Information Processing Standard (FIPS) 10-4): Washington, D.C., National Institute of Standards and Technology.
United States of America
USA
None. No restrictions or legal prerequisites for accessing the data. The data is in the public domain and may be redistributed.
None. No restrictions or legal prerequisites for using the data after access is granted. The data is suitable for use at appropriate scale, and is not intended for maps printed at scales greater or more detailed than 1:100,000 scale (1 inch = 1.578 mile). Although this data set has been used by the State of Connecticut, Department of Environmental Protection, no warranty, expressed or implied, is made by the State of Connecticut, Department of Environmental Protection as to the accuracy of the data and or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the State of Connecticut, Department of Environmental Protection in the use of these data or related materials. The user assumes the entire risk related to the use of these data. Once the data is distributed to the user, modifications made to the data by the user should be noted in the metadata. When printing this data on a map or using it in a software application, analysis, or report, please acknowledge NOAA and the USGS as primary data sources.
Connecticut Department of Environmental Protection, Long Island Sound Resource Center
mailing and physical address
Connecticut Department of Environmental Protection
79 Elm Street
Hartford
Connecticut
06106-5127
USA
mailing and physical address
Long Island Sound Resource Center
University of Connecticut - Avery Point
Marine Science Building
1080 Shennecossett Road
Groton
Connecticut
06340
USA
CTDEP: (860) 424-3540
LISRC: (860) 405-9015
CTDEP: 860-424-4058
dep.lisrc@ct.gov
lisrc@uconn.edu
Monday to Friday, 08:30 to 16:30 Eastern Standard Time
http://www.cteco.uconn.edu/metadata/dep/browsegraphic/lisbathymetrylinefullview.gif
Full view of Bathymetric Contours in Meters for Long Island Sound
GIF
http://www.cteco.uconn.edu/metadata/dep/browsegraphic/lisbathymetrylinedetailview.gif
Detail view of Bathymetric Contours in Meters for Long Island Sound at 1:100,000 scale, which is the source map scale for these data.
GIF
Applied Geographics, Inc. of Boston, Massachussets was contracted by the Long Island Sound Study to automate and digitize these bathymetry data for Long Island Sound. Linda Bischoff, GIS GIS Analyst, digitized the data and created the orginal metadata.
None
None
No restrictions for handling the data.
These data are maintained by the State of Connecticut using ArcGIS software developed by Environmental Systems Research Institute (ESRI) in a Microsoft Windows operating system environment.
All attributes have valid values. Values are within defined domains and valid ranges. The accuracy test for the DEPTH_M and DEPRESSION attribute values was conducted by comparing the information presented in the source data with check plots or interactive displays of the data on a computer graphic system. These tests were conduced by Applied Geographics, Inc. of Boston, Massachussets, which was contracted by the Long Island Sound Study to digitize bathymetry information from 1:100,000-scale NOAA bathymetry and USGS topographic-bathymetry maps.
Line features conform to the following topological rules. In general, lines are single part, and there are no duplicate lines.
No tests of logical consistency were performed by the State of Connecticut using ESRI ArcInfo software to maintain feature topology in ArcInfo coverage format. Consequently, these data may not be topologically clean. Lines may self overlap and overlap other lines. Lines may not intersect only at nodes, which anchor the ends of all lines. Lines may overshoot or undershoot other lines they are supposed to meet and intersect.
The completeness of the data reflects the feature content of the data sources, whiich are published 1:100,000-scale NOAA bathymetry and USGS topographic-bathymetry maps. This data is not updated.
The horizontal positional accuracy of this data is unknown.
National Oceanic & Atmospheric Administration - US Department of Commerce (collector, compiler, publiser of paper map)
United States Geologica Survey (collector, compiler, publiser of paper map)
Unpublished Material
Unknown
NOAA bathymetry and USGS topographic-bathymetry maps (mylar separates)
map
Rockville, Maryland USA
National Ocean Service, NOAA/USGS
100000
Mylar
1984
1986
1989
publication date
Source 1 - Bathymetry Mylar separates
Bathymetry lines and depth values from two NOAA bathymetry and two USGS topographic-bathymetry maps. These data are based on National Ocean Service, NOAA/USGS, 1989, 1984, 1986, 1984 four adjacent sheets covering majority of Long Island Sound, but published at different times by NOS through different parent agencies.
National Oceanic & Atmospheric Administration - US Department of Commerce (collector, compiler, publiser of paper map)
United States Geologica Survey (collector, compiler, publiser of paper map)
Long Island Sound Study (compiler and publisher of original digital data)
19960715
Unknown
Bathymetric Contours from NOAA Charts as Organized for the LISSGIS Library - 1 meter
vector digital data
Stamford, Connecticut, USA
Long Island Sound Study
http://woodshole.er.usgs.gov/project-pages/longislandsound/index.htm
http://www.lisrc.uconn.edu/
100000
disc
1984
1986
1989
publication date
Source 2 - Bathymetry Features, ArcInfo Coverage
Bathymtry data from four published maps covering Long Island Sound in ESRI ArcInfo Coverage format. Coordinate System is UTM Zone 18N, NAD27, map units meters.
National Oceanic & Atmospheric Administration - US Department of Commerce (collector, compiler, publiser of paper map)
United States Geologica Survey (collector, compiler, publiser of paper map)
United States Geologica Survey (collector, compiler, publiser of paper map)
Long Island Sound Resource Center (publisher of 2007 Edition of digital data)
19960715
Unknown
Bathymetric Contours in Meters for Long Island Sound
2007 Edition
vector digital data
Groton, Connecticut USA
Long Island Sound Resource Center
The 2007 edition represents a copy of the original data that was projected from UTM Zone 18N, NAD 27 to the Connecticut State Plane Coordinate System, NAD 83 by the Department of Environmental Protection for the Long Island Sound Resources Center. CT DEP also modified attribute names and values to make them easier to understand and use. Note, the citation name for the original data in UTM is "Bathymetric Contours from NOAA Charts as Organized for the LISSGIS Library - 1 m".
http://www.lisrc.uconn.edu/
100000
disc
1984
1986
1989
Source 3 - Bathymetry Features, Geodatabase
Bathymtry data from four published maps covering Long Island Sound in ESRI Geodatabase Feature Class format. Coordinate system is Connecticut State Plane, NAD 83, map units feet.
Two bathy-topo sheets and two bathy-fishing maps automated partially through table digitizing and partially through scanning/vectorization of mylar separates. Data from these four bathy maps assembled into one ArcInfo coverage covering all of Long Island Sound.
Source 1 - Bathymetry Mylar separates
19960715
Source 2 - Bathymetry Features, ArcInfo Coverage
Applied Geographics, Inc
Linda Bischoff
mailing and physical address
24 School Street, Suite 500
Boston
MA
02108
USA
617-447-2400
The 2007 edition is a modified version of the original data, which was projected to the Connecticut State Plane Coordinate System, North American Datum by the State of Connecticut, Department of Environmental Protection. CT DEP also modified attribute names and values to make them easier to understand and use. Using ESRI ArcGIS 9.1 software, the following modifications were made to the bathymetry data.
1. Using ArcInfo Workstation software, merged ArcInfo Coverage line features touching each other at end nodes to form fewer, longer line features with the Unsplit command. The Build command was subsequently used to restablish ArcInfo Coverage line feature topology. The Clean command was not used. Reduced number of features from 23,032 to 9,839.
2. Using ArcInfo Workstation software, projected the ArcInfo Coverage from UTM Zone 18N, NAD27 (map units meters) to the Connecticut State Plane Coordinate System, NAD83 (map units feet).
3. Using ArcGIS Desktop software, converted data format from ArcInfo Coverage to Geodatabase Feature Class. Spatial Reference Properties for new Feature Class:
Coordinate System: NAD_1983_StatePlane_Connecticut_FIPS_0600_Feet
XY Domain MinX: 100000; MaxX: 2247483.645
XY Domain MinY: 200000; MaxY: 2347483.645
Precision: 1000
4. Attribute enhancements - The following attribute names and values were modified to make them easier to understand and use. The DEPTH attribute was renamed DEPTH_M to denote the units of measure (meters). The attributed named DEP was renamed DEPRESSION. Blank values in the DEPRESSION field were filled in with values of "N" (for no) to complement the"Y" values associated with all other features.
Source 2 - Bathymetry Features, ArcInfo Coverage
20070926
Source 3 - Bathymetry Features, Geodatabase
State of Connecticut, Department of Environmental Protection
Howie Sternberg
mailing and physical address
79 Elm Street
Hartford
Connecticut
06106
USA
860-424-3540
not applicable
Vector
String
9839
Lambert Conformal ConicLambert Conformal Conic41.20000041.866667-72.75000040.833333999999.999996499999.999998
coordinate pair
0.000250
0.000250
survey feet
North American Datum of 1983
Geodetic Reference System 80
6378137.000000
298.257222
1.000000
Explicit elevation coordinate included with horizontal coordinates
Bathymetric Contours in Meters for Long Island Sound
Bathymetric contour
USGS, NOAA
OBJECTID
Internal feature number.
ESRI
Sequential unique whole numbers that are automatically generated.
DEPTH_M
Water depth in meters.
USGS, NOAA
1
110
DEPRESSION
Indicates bathymetric line is a depression.
USGS, NOAA
Y
Line is a depression. Catographically, these contours are normally symbolized with a hatch pattern.
USGS, NOAA
N
Line is regular bathmetric contour
USGS, NOAA
SHAPE
Feature geometry.
ESRI
Coordinates defining the features.
SHAPE.len
Includes depth contour features. Use the DEPTH_M attribute to label line features with depth values. Use the DEPRESSION attribute to symbolize line features by type on a map.
not applicable
State of Connecticut, Department of Enviromental Protection
mailing and physical address
79 Elm Street
Hartford
Connecticut
06106-5127
USA
860-424-3540
860-424-4058
dep.gisdata@ct.gov
Monday to Friday, 08:30 to 16:30 Eastern Standard Time
Bathymetric Contours in Meters for Long Island Sound
Although this data set has been used by the State of Connecticut, Department of Environmental Protection, no warranty, expressed or implied, is made by the State of Connecticut, Department of Environmental Protection as to the accuracy of the data and or related materials. The act of distribution shall not constitute any such warranty, and no responsibility is assumed by the State of Connecticut, Department of Environmental Protection in the use of these data or related materials. The user assumes the entire risk related to the use of these data. Once the data is distributed to the user, modifications made to the data by the user should be noted in the metadata.
Shapefile, Feature Class
ArcGIS
Zip file
http://www.ct.gov/deep
An online copy of the data may be accessed without charge.
The data distributor does not provide custom GIS analysis or mapping services. Data is available in a standard format and may be converted to other formats, projections, coordinate systems, or selected for specific geographic regions by the party receiving the data.
Geographic information sytem (GIS), computer-aided drawing or other mapping software is necessary to display, view and access the information.
Long Island Sound Resources Center
mailing and physical address
University of Connecticut - Avery Point
Marine Sciences Building
1080 Shennecossett Road
Groton
Connecticut
06340
USA
860-405-9015
dep.lisrc@po.state.ct.us
lisrc@uconn.edu
Monday to Friday, 08:30 to 16:30 Eastern Standard Time
Downloadable Data
ArcInfo Coverage
ArcInfo 7
Zip file
0.057
http://www.lisrc.uconn.edu/
An online copy of the data may be accessed without charge.
19960715
State of Connecticut, Department of Environmental Protection
Howie Sternberg (Original metadata authored by Applied Geographics and provided with the original data was modified by CT DEP to document subsequent process steps conducted by CT DEP) for the Long Island Sound Resource Center
mailing and physical address
79 Elm Street
Hartford
Connecticut
06106-5127
USA
860-424-3540
860-424-4058
dep.gisdata@ct.gov
Monday to Friday, 08:30 to 16:30 Eastern Standard Time
FGDC Content Standards for Digital Geospatial Metadata
FGDC-STD-001-1998
local time
None. No restrictions or legal prerequisites for accessing the metadata.
None. No restrictions or legal prerequisites for using the metadata after access is granted.
None
None
No restrictions for handling the metadata.
http://www.esri.com/metadata/esriprof80.html
ESRI Metadata Profile