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Connecticut Hillshade for 2000

Metadata:


Identification_Information:
Citation:
Citation_Information:
Originator: University of Connecticut, College of Agriculture and Natural Resources (compiler, editor and publisher)
Originator: State of Connecticut, Department of Environmental Protection (DEP)
Originator: State of Connecticut, Department of Public Safety (DPS)
Originator: State of Connecticut, Department of Transportation (DOT)
Publication_Date: Unknown
Title:
Connecticut Hillshade for 2000
Geospatial_Data_Presentation_Form: SDE raster digital data
Publication_Information:
Publication_Place: Storrs, Connecticut
Publisher: University of Connecticut, College of Agriculture and Natural Resources
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.
Online_Linkage: http://www.ct.gov/deep
Online_Linkage: http://www.clear.uconn.edu
Description:
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.
Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2000
Currentness_Reference:
collection date
Status:
Progress: Complete
Maintenance_and_Update_Frequency: None planned
Spatial_Domain:
Bounding_Coordinates:
West_Bounding_Coordinate: -73.742925
East_Bounding_Coordinate: -71.780636
North_Bounding_Coordinate: 42.053163
South_Bounding_Coordinate: 40.972526
Keywords:
Theme:
Theme_Keyword_Thesaurus: ISO 19115 Topic Category
Theme_Keyword: elevation
Theme_Keyword: environment
Theme_Keyword: LiDAR
Theme_Keyword: hillshade
Place:
Place_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_Keyword: Connecticut
Place_Keyword: CT
Place:
Place_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.
Place_Keyword: United States of America
Place_Keyword: USA
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.
Point_of_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Center for Land Use Education & Research (CLEAR)
Contact_Address:
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
Contact_Voice_Telephone: 860-345-4511
Contact_Facsimile_Telephone: 860-345-3357
Contact_Electronic_Mail_Address: clear@uconn.edu
Browse_Graphic:
Browse_Graphic_File_Name: http://www.cteco.uconn.edu/metadata/dep/browsegraphic/hillshade2000fullview.jpg
Browse_Graphic_File_Description:
Full view of Connecticut Hillshade for 2000
Browse_Graphic_File_Type: JPEG
Browse_Graphic:
Browse_Graphic_File_Name: http://www.cteco.uconn.edu/metadata/dep/browsegraphic/hillshade2000detailview.jpg
Browse_Graphic_File_Description:
Detail view of Connecticut Hillshade for 2000
Browse_Graphic_File_Type: JPEG
Data_Set_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.
Security_Information:
Security_Classification_System: None
Security_Classification: None
Security_Handling_Description: No restrictions for handling the data
Native_Data_Set_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.
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Data_Quality_Information:
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_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_Positional_Accuracy:
Vertical_Positional_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.
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Originator: University of Connecticut, College of Agriculture and Natural Resources (compiler, editor and publisher)
Originator: State of Connecticut, Department of Environmental Protection (DEP)
Originator: State of Connecticut, Department of Public Safety (DPS)
Originator: State of Connecticut, Department of Transportation (DOT)
Publication_Date: Unknown
Title:
Connecticut Hillshade
Geospatial_Data_Presentation_Form: raster digital data
Publication_Information:
Publication_Place: Storrs, Connecticut
Publisher: University of Connecticut, College of Agriculture and Natural Resources
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.
Online_Linkage: http://www.clear.uconn.edu
Source_Scale_Denominator: unknown
Type_of_Source_Media: disc
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 2000
Source_Currentness_Reference:
ground condition
Source_Citation_Abbreviation:
CT_SHADE
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.
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Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Raster_Object_Information:
Raster_Object_Type: Pixel
Row_Count: 39224
Column_Count: 53298
Vertical_Count: 1
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Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Lambert Conformal Conic
Lambert_Conformal_Conic:
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
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Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: Connecticut Hillshade for 2000
Attribute:
Attribute_Label: OBJECTID
Attribute_Definition:
Internal feature number.
Attribute_Definition_Source:
ESRI
Attribute_Domain_Values:
Unrepresentable_Domain:
Sequential unique whole numbers that are automatically generated.
Attribute:
Attribute_Label: VALUE
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Distribution_Information:
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.
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Format_Name: Grid, Raster
Format_Version_Number: ArcGIS
File_Decompression_Technique: Zip
Digital_Transfer_Option:
Online_Option:
Computer_Contact_Information:
Network_Address:
Network_Resource_Name: http://www.ct.gov/deep
Technical_Prerequisites:
Geographic information sytem (GIS), computer-aided drawing or other mapping software is necessary to display, view and access the information.
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Metadata_Reference_Information:
Metadata_Date: 20111208
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: State of Connecticut, Department of Environmental Protection
Contact_Person: Howie Sternberg
Contact_Address:
Address_Type: mailing and physical address
Address:
79 Elm Street
City: Hartford
State_or_Province: Connecticut
Postal_Code: 06106
Country: USA
Contact_Voice_Telephone: 860-424-3540
Contact_Electronic_Mail_Address: dep.gisdata@ct.gov
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Access_Constraints: None. No restrictions or legal prerequisites for accessing the metadata.
Metadata_Use_Constraints:
None. No restrictions or legal prerequisites for using the metadata after access is granted.
Metadata_Security_Information:
Metadata_Security_Classification_System: None
Metadata_Security_Classification: None
Metadata_Security_Handling_Description:
No restrictions for handling the metadata
Metadata_Extensions:
Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Profile_Name: ESRI Metadata Profile
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