Connecticut Hillshade for 2000
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Connecticut Hillshade for 2000
SDE Raster Dataset - SDR - depgis.DEP.HILLSHADE_2000
FGDC, ESRI Metadata
DescriptionGraphicSpatialData StructureData QualityData SourceData DistributionMetadata
+ Resource Description
Citation
Information used to reference the data.
Title: Connecticut Hillshade for 2000
Originators: University of Connecticut, College of Agriculture and Natural Resources (compiler, editor and publisher)
State of Connecticut, Department of Environmental Protection (DEP)
State of Connecticut, Department of Public Safety (DPS)
State of Connecticut, Department of Transportation (DOT)
Publisher: University of Connecticut, College of Agriculture and Natural Resources
Publication place: Storrs, Connecticut
Publication date: Unknown
Data type: SDE raster digital data
Other citation details:
Agencies that provided the funding to capture 2004 orthophotography and 2000 LiDAR elevation data for Connecticut include the DEP, DOT, and DPS.
Description
A characterization of the data, including its intended use and limitations.
Abstract:
Connecticut Hillshade for 2000 is a hillshade dataset for Connecticut based on 10-foot spatial resolution elevation information for Connecticut. It generates the appearance of a three-dimensional representation of terrain by placing shadows cast on high ground as if sunlight is shining from the northwestern direction. As a result, the northwestern side of elevated areas is intentionally lighter in color than the southeastern side. Relatively flat areas are not shadowed and appear smooth, whereas steeper slopes appear rough with the southeastern side appearing darker in color.

This hillshade information for Connecticut was obtained from the University of Connecticut, College of Agriculture and Natural Resources, Center for Land Use Education and Research (CLEAR). It is derived from point elevation data available for Connecticut captured during the year 2000 using Light Detection And Ranging (LiDAR) technology. Note, the 2000 LiDAR data for Connecticut is not complete so this statewide hillshade information may be incorrect in some areas.  For unknown reasons, in some areas of the state there are gaps in the underlying LiDAR point data. This is a known limitation of the 2000 LiDAR data for Connecticut. In an effort to create a seamless statewide elevation dataset, the University of Connecticut, College of Agriculture and Natural Resources edited point elevation files to remove anomalous observations. Given the volume of data, there are likely errors present in the point data as well as in an interpolated surface. The elevation data are in a gridded format and are projected into the State Plane Coordinate System Zone 0600, orthometric heights (NAVD 88) in US Survey feet.
Purpose:
This information is used to represent the general shape of landforms such as hills, valleys and ridges and is useful to cartographically illustrate geomorphic patterns, hydrologic (stream) networks, drainage patterns, etc. This hillshade information is best used for regional analysis and not intended for use at detailed scales or to determine the exact elevation at a particular location.
Supplemental information:
Based on a statewide data in ArcInfo format named ct-hillshade obtained from the University of Connecticut, College of Agriculture and Natural Resources. This information is derived from point elevation data available for Connecticut that was captured in 2000 using Light Detection And Ranging (LiDAR) technology.
Dataset credit:
Aero-Metric, Inc. of Sheboygan Wisconsin was contracted by the State of Connecticut to provide the 2004 Statewide Aerial Survey of Connecticut. Contract deliverables include digital orthohotos, two sets of non-rectified prints for stereoscopic viewing, photo indexes, and LiDAR data. All 2004 Statewide Aerial Survey imagery and data products are defined under State of Connecticut contract award number RFP-990-A-14-0518-C (dated Feb 22, 2000), including contract award supplement #1 (dated Feb 28, 2002), contract award supplement #2 (dated Nov 4, 2004), contract award supplement #3 (dated Nov 26, 2004) and contract award supplement #4 (dated May 13, 2005). TerraPoint LLC of Woodlands Texas was subcontracted to create a Connecticut Statewide LIDAR dataset.
Language of dataset: en
Point Of Contact
Contact information for the individual or organization that is knowledgeable about the data.
Organization: Center for Land Use Education & Research (CLEAR)
Phone: 860-345-4511
Fax: 860-345-3357
Email: clear@uconn.edu
Address type: clear@uconn.edu
Address:
University of Connecticut
Address:
College of Agriculture and Natural Resources
Address:
1066 Saybrook Road. PO Box 70
City: Haddam
State or Province: Connecticut
Postal code: 06438-0070
Country: USA
Data Type
How the data are represented, formatted and maintained by the data producing organization.
File or table name: depgis.DEP.HILLSHADE_2000
Data type: SDE raster digital data
Data format: SDE Raster Dataset
Native dataset environment: 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.
Time Period of Data
Time period(s) for which the data corresponds to the currentness reference.
Date: 2000
Currentness reference:
collection date
Status
The state of and maintenance information for the data.
Data status: Complete
Update frequency: None planned
Key Words
Words or phrases that summarize certain aspects of the data.
Theme:
Keywords: elevation, environment, LiDAR, hillshade
Keyword thesaurus: ISO 19115 Topic Category
Place:
Keywords: Connecticut, CT
Keyword thesaurus: 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.
Place:
Keywords: United States of America, USA
Keyword thesaurus: 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.
Data Access Constraints
Restrictions and legal prerequisites for accessing or using the data after access is granted.
Access constraints:
None. No restrictions or legal prerequisites for accessing the data. The data is in the public domain and may be redistributed.
Use constraints:
None. No restrictions or legal prerequisites for using the data after access is granted. The data are derived through the spatial interpolation of airborne LiDAR collected in the year 2000. There is a known limitation in the LiDAR data collected for Connecticut. The LiDAR data is not complete and did not cover all of Connecticut. For unknown reasons, elevation information was not captured in some areas, resulting in data gaps in the underlying LiDAR point data. These data gaps are a know limitation in the 20-foot posting LiDAR data collected for Connecticut during the year 2000. In an effort to create a seamless statewide elevation dataset, the University of Connecticut, College of Agriculture and Natural Resources edited point elevation files to remove anomalous observations. Given the volume of data, there are likely errors present in the point data as well as in an interpolated surface.

This information may be incorrect in some areas due to gaps in the underlying point elevation LiDAR data used to generate the hillshade effect. When displayed at a detailed map scale, the hillshade will appear discontinuous in areas where information is incorrect, and linear breaks in the hillshade become apparent in areas where there are errors in the underlying elevation data. Due to these anomalies and inconsistencies, use caution when viewing and analyzing this informaiton.
Data Security Information
Handling restrictions imposed on the data because of national security, privacy or other concerns.
Security classifiction system: None
Security classification: None
Security handling: No restrictions for handling the data
+ Graphic Example
Browse Graphic
Graphic illustration of the data.
Browse graphic 1
Open - Full view of Connecticut Hillshade for 2000
Graphic Image

Browse graphic 2
Open - Detail view of Connecticut Hillshade for 2000
Graphic Image
+ Spatial Reference Information
Horizontal Coordinate System
Reference system from which linear or angular quantities are measured and assigned to the position that a point occupies.
Projected coordinate system:
Name: NAD 1983 Lambert Conformal Conic
Map units: survey feet
Geographic coordinate system:
Name: GCS North American 1983
Coordinate System Details
Map projection
Map projection name: Lambert Conformal Conic
Standard parallel: 41.200000
Standard parallel: 41.866667
Longitude of central meridian: -72.750000
Latitude of projection origin: 40.833333
False easting: 999999.999996
False northing: 499999.999998
Planar Coordinate Information
Planar coordinate encoding method: row and column
Coordinate representation:
Abscissa resolution: 10.000000
Ordinate resolution: 10.000000
Planar distance units: survey feet
Geodetic model
Horizontal datum name: North American Datum of 1983
Ellipsoid name: Geodetic Reference System 80
Semi-major axis: 6378137.000000
Denominator of flattening ratio: 298.257222
Spatial Domain
The geographic areal domain of the data that describes the western, eastern, northern, and southern geographic limits of data coverage.
Bounding Coordinates
In Projected or local coordinates
NAD 1983 Lambert Conformal Conic
BoundaryCoordinate
Left730310.000000 (survey feet)
Right1263290.000000 (survey feet)
Top944480.000000 (survey feet)
Bottom552240.000000 (survey feet)
In Unprojected coordinates (geographic)
GCS North American 1983
BoundaryCoordinate
West-73.742925 (longitude)
East-71.780636 (longitude)
North42.053163 (latitude)
South40.972526 (latitude)
+ Data Structure and Attribute Information
Overview
Summary of the information content of the data, including other references to complete descriptions of entity types, attributes, and attribute values for the data.
Direct spatial reference method: Raster
Attributes of Connecticut Hillshade for 2000
Detailed descriptions of entity type, attributes, and attribute values for the data.
Name: depgis.DEP.SDE_VAT_67
Type of object: Table
Number of records: 255
Attributes
OBJECTID
Definition:
Internal feature number.
Alias: OBJECTID Type: OID Width: 4 Precision: 10 Scale: 0
Attribute values: Sequential unique whole numbers that are automatically generated.
Attribute definition source:
ESRI
VALUE
Alias: VALUE Type: Integer Width: 4 Precision: 10 Scale: 0
Raster Information
Type and number of raster spatial objects in the data.
Raster format: SDR
Raster object type: Pixel
Number of raster bands: 1
Raster properties
Raster origin: Upper Left
Has pyramid layers: TRUE
Has image colormap: FALSE
Compression type: JPEG2000
Raster display type: pixel codes
Cell information
Number of cells on x-axis: 53298
Number of cells on y-axis: 39224
Number of cells on z-axis: 1
Bits per cell: 8
Cell Size:
X direction: 10.000000
Y direction: 10.000000
+ Data Quality and Accuracy Information
Positional Accuracy
Accuracy of the positional aspects of the data.
Horizontal accuracy report:
The horizontal positional accuracy of this data is not known. The horizontal positional accuracy of the 20-foot posting LiDAR 2000 point data used to create this data product is approximately 3 feet on the ground.
Vertical accuracy report:
The data are derived through the spatial interpolation of airborne LiDAR collected in the year 2000. There is a known limitation in the LiDAR data collected for Connecticut. The LiDAR data is not complete and did not cover all of Connecticut. For unknown reasons, elevation information was not captured in some areas, resulting in data gaps in the underlying LiDAR point data. These data gaps are a know limitation in the 20-foot posting LiDAR data collected for Connecticut during the year 2000. In an effort to create a seamless statewide elevation dataset, the University of Connecticut, College of Agriculture and Natural Resources edited point elevation files to remove anomalous observations. Given the volume of data, there are likely errors present in the point data as well as in an interpolated surface.
+ Data Source and Process Information
Data Sources
Information about the source data used to construct or derive the data.
Data source information
CT_SHADE
Title: Connecticut Hillshade
Originators: University of Connecticut, College of Agriculture and Natural Resources (compiler, editor and publisher)
State of Connecticut, Department of Environmental Protection (DEP)
State of Connecticut, Department of Public Safety (DPS)
State of Connecticut, Department of Transportation (DOT)
Publisher: University of Connecticut, College of Agriculture and Natural Resources
Publication place: Storrs, Connecticut
Publication date: Unknown
Data type: raster digital data
Other citation details:
Agencies that provided the funding to capture 2004 orthophotography and 2000 LiDAR elevation data for Connecticut include the DEP, DOT, and DPS.
Map scale denominator: unknown
Media: disc
Source contribution:
The data source is an ArcInfo Grid named CT_SHADE, which the University of Connecticut, College of Agriculture and Natural Resources derived from the Connecticut 2000 LiDAR dataset.
Date: 2000
Currentness reference:
ground condition
ESRI geoprocessing history
Description of ESRI geoprocessing commands, settings, and tolerances applied to the data.
ESRI geoprocessing command information
1 CreateRasterDataset_2
Date: 20090318 Time: 082434
Tool location: C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\CreateRasterDataset
Command issued: CreateRasterDataset "Database Connections\10.18.8.60.depgis@dep_92dc.sde" HILLSHADE_2000 # 16_BIT_SIGNED PROJCS['NAD_1983_StatePlane_Connecticut_FIPS_0600_Feet',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]],PROJECTION['Lambert_Conformal_Conic'],PARAMETER['False_Easting',999999.999996],PARAMETER['False_Northing',499999.999998],PARAMETER['Central_Meridian',-72.75],PARAMETER['Standard_Parallel_1',41.2],PARAMETER['Standard_Parallel_2',41.86666666666667],PARAMETER['Latitude_Of_Origin',40.83333333333334],UNIT['Foot_US',0.3048006096012192]] 1 DEPRASTER "PYRAMIDS 12 CUBIC" "128 128" LZ77 "687800 1015180" "Database Connections\10.18.8.60.depgis@dep_92dc.sde\depgis.DEP.HILLSHADE_2000"
2 Mosaic_2
Date: 20090318 Time: 093720
Tool location: C:\Program Files\ArcGIS\ArcToolbox\Toolboxes\Data Management Tools.tbx\Mosaic
Command issued: Mosaic Y:\Archive\Elevation\CT_LiDAR_10_Foot_Products\ct_shade "Database Connections\10.18.8.60.depgis@dep_92dc.sde\DEPGIS.DEP.HILLSHADE_2000" LAST FIRST # 0 NONE 0 "Database Connections\10.18.8.60.depgis@dep_92dc.sde\DEPGIS.DEP.HILLSHADE_2000"
+ Data Distribution Information
General
Description of the data known by the party from whom the data may be obtained, liability of party distributing data, and technical capabilities required to use the data.
Resource description:
Connecticut Hillshade for 2000
Distribution liability:
Although this data set  has been used by the State of Connecticut, no warranty, expressed or implied, is made by the State of Connecticut 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 in the use of these data or related materials. The user assumes the entire risk related to the use of these data.
Technical prerequisites:
Geographic information sytem (GIS), computer-aided drawing or other mapping software is necessary to display, view and access the information.
Standard Order Process
Common ways in which data may be obtained.
Digital form:
Format name: Grid, Raster
Format version number: ArcGIS
File decompression technique: Zip
Digital transfer option:
Online option:
Computer information:
Network address:
Network resource name: http://www.ct.gov/deep
+ Metadata Reference
Metadata Date
Dates associated with creating, updating and reviewing the metadata.
Last updated: 20111208
Language of metadata: en
Metadata Point of Contact
Contact information for the individual or organization responsible for the metadata information.
Organization: State of Connecticut, Department of Environmental Protection
Person: Howie Sternberg
Phone: 860-424-3540
Email: dep.gisdata@ct.gov
Address type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State or Province: Connecticut
Postal code: 06106
Country: USA
Metadata Access Constraints
Restrictions and legal prerequisites for accessing or using the data after access is granted.
Access constraints:
None. No restrictions or legal prerequisites for accessing the metadata.
Use constraints:
None. No restrictions or legal prerequisites for using the metadata after access is granted.
Metadata Security Information
Handling restrictions imposed on the metadata because of national security, privacy or other concerns.
Security classifiction system: None
Security classification: None
Security handling: No restrictions for handling the metadata
Metadata Standards
Description of the metadata standard used to document the data and reference to any additional extended profiles to the standard used by the metadata producer.
Standard name: FGDC Content Standards for Digital Geospatial Metadata
Standard version: FGDC-STD-001-1998
Time convention: local time
Metadata profiles defining additonal information:
Profile: ESRI Metadata Profile
FGDC Plus Metadata Stylesheet
Stylesheet: FGDC Plus Stylesheet
File name: FGDC Plus.xsl
Version: 2.2
Description: This metadata is displayed using the FGDC Plus Stylesheet, which is an XSL template that can be used with ArcGIS software to display metadata. It displays metadata elements defined in the Content Standard for Digital Geospatial Metadata (CSDGM) - aka FGDC Standard, the ESRI Profile of CSDGM, the Biological Data Profile of CSDGM, and the Shoreline Data Profile of CSDGM. CSDGM is the US Federal Metadata standard. The Federal Geographic Data Committee originally adopted the CSDGM in 1994 and revised it in 1998. According to Executive Order 12096 all Federal agencies are ordered to use this standard to document geospatial data created as of January, 1995. The standard is often referred to as the FGDC Metadata Standard and has been implemented beyond the federal level with State and local governments adopting the metadata standard as well. The Biological Data Profile broadens the application of the CSDGM so that it is more easily applied to biological data that are not explicitly geographic (laboratory results, field notes, specimen collections, research reports) but can be associated with a geographic location. Includes taxonomical vocabulary. The Shoreline Data Profile addresses variability in the definition and mapping of shorelines by providing a standardized set of terms and data elements required to support metadata for shoreline and coastal data sets. The FGDC Plus Stylesheet includes the Dublin Core Metadata Element Set. It supports W3C DOM compatible browsers such as IE7, IE6, Netscape 7, and Mozilla Firefox. It is in the public domain and may be freely used, modified, and redistributed. It is provided "AS-IS" without warranty or technical support.
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