Indiana Spatial Data Portal

Dataset Basics

Color digital orthophotography countywide coverage area at 1"= 100' scale with 0.5-foot pixel resolution. The orthophoto tiling format will follow a modular layout, with each 1"= 100' scale image covering 2,500' x 2,500' defined by even NAD-83 Indiana State Plane Coordinate grid lines. Orthophoto tiles will be clipped to eliminate overlap between adjacent tiles. The file size for each tile will be 75 MB. This digital orthophotography for Dearborn County, Indiana, (including a 1 mile buffer) will be used in the enterprise GIS.

Available Datasets

Metadata from Vendor

Originator: Woolpert, Inc.
Publication_Date: 20080406
Calendar_Date: 20080406
Currentness_Reference: ground condition

Bounding_Coordinates:
West_Bounding_Coordinate: -85.132429
East_Bounding_Coordinate: -84.819394
North_Bounding_Coordinate: 39.307251
South_Bounding_Coordinate: 38.935325

Place_Keyword: Indiana
Place_Keyword: Dearborn
Place_Keyword: County
Access_Constraints: None

Use_Constraints: This data is for planning purposes only and should not be used for legal or cadastral purposes.

Point_of_Contact:
Contact_Organization: Dearborn County GIS
Contact_Person: Margaret Minzner
Contact_Address:
Address: County Admin Building, 215-B West High Street,Room 203
City: Lawrenceburg
State_or_Province: Indiana
Postal_Code: 47025
Country: USA
Contact_Voice_Telephone: 812-532-3242
Contact_Electronic_Mail_Address: mminzner@dearborncounty.in.gov
Native_Data_Set_Environment: Microsoft Windows Vista Version 6.0 (Build 6002) Service Pack 2; ESRI ArcCatalog 9.3.1.3000
Cross_Reference:

Citation_Information:
Originator: Woolpert, Inc.
Title: Indiana 2009 Dearborn County Orthophotography
Data_Quality_Information:
Logical_Consistency_Report: These orthophoto images follow the modular layout, with each 1"= 100' scale image covering 2,500' x 2,500' defined by even NAD-83 Indiana State Plane Coordinate grid lines. The area of coverage for orthophoto imagery indicates the full area covered by the footprint feature class.
Positional_Accuracy:
Horizontal_Positional_Accuracy:
Horizontal_Positional_Accuracy_Report: In accordance with the specifications of the RFP, the digital orthophotography produced for this project was consistent across the entire project area, and met the specifications of the county's GIS system. The processes and data was produced at National Map Accuracy Standards (NMAS) for 1"= 100' scale mapping.
Vertical_Positional_Accuracy:
Lineage:
Source_Information:
Source_Citation:
Citation_Information:
Title: Dearborn County Digital Orthophoto
Source_Time_Period_of_Content:
Time_Period_Information:
Single_Date/Time:
Calendar_Date: 20080406
Source_Currentness_Reference: ground condition
Process_Step:
Process_Description: Woolpert acquired new ADS40 color aerial photography at 0.5-foot pixel resolution covering 305 square miles encompassing all of Dearborn County. The aerial photography was acquired at an appropriate altitude capable of producing 1"= 100' scale countywide digital orthophotography mapping at 0.5-foot pixel resolution. Woolpert acquired Dearborn County, Indiana, in the Spring of 2008. All digital imagery was acquired at a sun angle meeting or exceeding 30 degrees.

Process_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: Woolpert Inc.
Contact_Person: Joe Cantz

Contact_Address:
Address: 4454 Idea Center Blvd
City: Dayton
State_or_Province: Ohio
Postal_Code: 45430
Country: USA
Contact_Voice_Telephone: 937.531.1792
Process_Step:
Process_Description:
Woolpert targeted ± 20 existing horizontal and vertical ground control points and provide airborne GPS to support the digital orthophotography mapping production.

The horizontal datum used for this project was North American Datum 1983 (NAD83), Indiana State Plane Coordinate System, East Zone, and expressed in U.S. Survey Feet. The vertical datum used for this project was North American Vertical Datum 1988(NAVD88). This control was sufficient to meet the required accuracy necessary to support the subsequent mapping.
Process_Date: Unknown
Process_Step:
Process_Description: Woolpert used the existing Dearborn County and Statewide DTM data to produce a DEM (digital elevation model) for orthophotography rectification.
Process_Date: Unknown
Process_Step:
Process_Description: Woolpert used digital softcopy techniques for the aerial triangulation to extend and densify ground control.
Process_Date: Unknown
Process_Step:
Process_Description: Woolpert produced a new color digital orthophotography countywide coverage area at 1"= 100' scale with 0.5-foot pixel resolution. The orthophoto tiling format followed a modular layout, with each 1"= 100' scale image covering 2,500' x 2,500' defined by even NAD-83 Indiana State Plane Coordinate grid lines. Orthophoto tiles were clipped to eliminate overlap between adjacent tiles. The file size for each tile was 75 MB. Woolpert used an interactive mosaicking process for tone balancing and image mosaicking. Full tiles were used for both the interior and perimeter of the project area. The above digital orthophotography will be in .TIFF format with a .TIFF world file for geo-referencing.
Process_Date: Unknown
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: C:\working\DearbornOrthoTiles\Metadata\metadata.xml
Process_Step:
Process_Description: Metadata imported.
Source_Used_Citation_Abbreviation: G:\2009orthos\dearborn\metadata\2009DEARBORN.xml
Process_Date: 20091214
Process_Time: 16334000
Cloud_Cover: 0
Spatial_Data_Organization_Information:
Direct_Spatial_Reference_Method: Raster
Point_and_Vector_Object_Information:
SDTS_Terms_Description:
SDTS_Point_and_Vector_Object_Type: G-polygon
Point_and_Vector_Object_Count: 1715
Raster_Object_Information:
Raster_Object_Type: Pixel
Row_Count: 5000
Column_Count: 5000
Vertical_Count: 1
Spatial_Reference_Information:
Horizontal_Coordinate_System_Definition:
Planar:
Map_Projection:
Map_Projection_Name: Transverse Mercator
Transverse_Mercator:
Scale_Factor_at_Central_Meridian: 0.999967
Longitude_of_Central_Meridian: -85.666667
Latitude_of_Projection_Origin: 37.500000
False_Easting: 328083.333333
False_Northing: 820208.333333
Planar_Coordinate_Information:
Planar_Coordinate_Encoding_Method: row and column
Coordinate_Representation:
Abscissa_Resolution: 0.500000
Ordinate_Resolution: 0.500000
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
Vertical_Coordinate_System_Definition:
Altitude_System_Definition:
Entity_and_Attribute_Information:
Detailed_Description:
Entity_Type:
Entity_Type_Label: DEARBORN
Attribute:
Attribute_Label: FID
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: Shape
Attribute_Definition: Feature geometry.
Attribute_Definition_Source: ESRI
Attribute_Domain_Values:
Unrepresentable_Domain: Coordinates defining the features.
Attribute:
Attribute_Label: PHOTOID
Attribute:
Attribute_Label: DOP
Overview_Description:
Distribution_Information:
Distributor:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: University Information Technology Services at Indiana University
Contact_Electronic_Mail_Address: uitsgis@indiana.edu
Resource_Description:
Downloadable Data
http://gis.iu.edu
Standard_Order_Process:
Digital_Form:
Digital_Transfer_Information:
Transfer_Size: 0.000
Metadata_Reference_Information:
Metadata_Date: 20091216
Metadata_Contact:
Contact_Information:
Contact_Organization_Primary:
Contact_Organization: University Information Technology Services at Indiana University
Contact_Address:
Contact_Electronic_Mail_Address: uitsgis@indiana.edu
Metadata_Standard_Name: FGDC Content Standards for Digital Geospatial Metadata
Metadata_Standard_Version: FGDC-STD-001-1998
Metadata_Time_Convention: local time
Metadata_Extensions:
Online_Linkage: http://www.esri.com/metadata/esriprof80.html
Profile_Name: ESRI Metadata Profile