State of Connecticut, Department of Environmental Protection (data editor and publisher) State of Connecticut, Department of Transportation (data publisher) 20060821 vector digital data Hartford, Connecticut, USA State of Connecticut, Department of Environmental Protection http://www.ct.gov/deep Connecticut 2004 Aerial Photo Center Point Index is a point feature class that defines the center point for each Connecticut 2004 orthophoto image tile. There are 3,413 orthophoto tiles and these data include a center point for each orthophoto tile. Each tile measures approximately 1.17 miles east-west by 1.5 miles north-south, covering a geographic area of approximately 1.755 square miles. The orthophotos are organized in a grid pattern that covers the State of Connecticut with 36 orthophoto tiles per 7.5 minute quadrangle area (9 per 3.75 minute quarter quadrangle area). The overlap between adjacent photos is approximately 350 to 450 feet. Each center point feature is identified by a unique ORTHOPHOTO_TILE value, which matches the name of the corresponding image file. These data serve as a center point index to the set of 2004 orthophoto image tiles for Connecticut. 2004 Date of photography Complete None planned -73.733365 -71.772475 42.056478 40.967921 ISO 19115 Topic Category imageryBaseMapsEarthCover None aerial photo index 2004 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 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. When printing this data on a map or using it in a software application, analysis, or report, please acknowledge the State of Connecticut, Departments of Environmental Protection and Transportation as the source for this information. For example, include the following data source description when printing this layer on a map: Photo centers - From the Connecticut 2004 Aerial Photo Center Point Index layer, published by CT DEP and CT DOT. State of Connecticut, Department of Environmental Protection Howie Sternberg 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 http://www.cteco.uconn.edu/metadata/dep/browsegraphic/photoindex2004fullview.gif Full view of 2004 Photo Index GIF http://www.cteco.uconn.edu/metadata/dep/browsegraphic/photoindex2004detailview.gif Detail view of 2004 Photo Index labeled with flight line and photo ID values. GIF 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. No rigid attribute accuracy tests were conducted. However, assignment of quadrangle number, quadrangle name, and quadrangle section values were conducted through spatial joins with previously quality checked quadrangle and quarter quadrangle index spatial data, followed by a visual inspection for expected results to ensure overall accuracy. Point features conform to the following topological rules. Points are single part. There are no duplicate points. Points do not overlap. Establishment of logical consistency was performed by the State of Connecticut, Department of Environmental Protection using ESRI ArcGIS software to derive these center point features from a photo index in CAD format supplied by the State of Connecticut, Department of Transportation. No automated procedures or tests were performed to guarantee desired topology other than visual inspection. The completeness of the data reflects the feature content of the data sources, which is photo index for the 2004 orthophotos in CAD format from the State of Connecticut, Department of Transportation. The horizontal positional accuracy of this data is unknown. State of Connecticut, Department of Transportation (data publisher) 2006 vector digital data Hartford, Connecticut, USA State of Connecticut, Department of Transportation unknown disc 2004 Date of photography Source 1 - index_v8_3d.dgn State of Connecticut, Department of Environmental Protection (data compiler, editor and publisher) 1995 2005 vector digital data Hartford, Connecticut, USA State of Connecticut, Department of Environmental Protection http://www.ct.gov/deep 24000 disc 1995 publication date Source 2 - Quarter_Quadrangle_Index_NAD83_Area.shp Quarter_Quadrangle_Index_NAD83_Area.shp is in ESRI Shapefile format with polygon features. State of Connecticut, Department of Environmental Protection (data editor and publisher) State of Connecticut, Department of Transportation (data publisher) 20070216 vector digital data Hartford, Connecticut, USA State of Connecticut, Department of Environmental Protection http://www.ct.gov/deep unknown disc 2004 Date of photography Source 3 - Photo_Index_2004 These data serve as a center point index to the set of 2004 orthophoto image tiles for Connecticut. Orthophoto tile boundary information in CAD format from the State of Connecticut Department of Transportation (source 1) was used as the basis for creating a center point feature for each orthophoto tile. Attributes such as ORTHOPHOTO_TILE were transferred from the polygon data in CAD format to individual point features. Additional center point attribute information such as quadrangle number, quadrangle name, and quadrangle section values were subsequently determined and assigned to individual point features through spatial joins with quarter quadrangle index spatial data published by the State of Connecticut, Department of Environmental Protection (source 2). The resulting point feature class was named Ortho_2004_Index_Point (source 3). Source 1 - index_v8_3d.dgn Source 2 - Quarter_Quadrangle_Index_NAD83_Area.shp 2005-2006 Source 3 - Photo_Index_2004 State of Connecticut, Department of Environmental Protection Deborah Dumin, Jackie Mickiewicz, Howie Sternberg mailing and physical address

79 Elm Street

Hartford Connecticut 06106 USA 860-424-3540 860-424-4058 The FLIGHTLINE_PHOTO_NO attribute value (e.g. 050-01) identifies a point feature representing the center location of the photograph. Vector Entity point 4418 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 Connecticut 2004 Aerial Photo Center Point Index Orthophoto tile center points. One point per tile. State of Connecticut, Department of Environmental Protection OBJECTID Internal feature number. ESRI Sequential unique whole numbers that are automatically generated. SHAPE Feature geometry. ESRI Coordinates defining the features. ORTHOPHOTO_TILE FLIGHTLINE_PHOTO_NO EASTING NORTHING ELEVATION PHOTO_DATE PHOTO_TIME Information encoded about photo center point features includes the name of the corresponding orthophoto image tile (ORTHOPHOTO_TILE) and identification of the quadrangle number (QUAD_NO), quadrangle name (QUADRANGLE) and quadrangle section (QUAD_SEC) the orthophoto is located on. A point feature is located in the center of each tile area. 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 Connecticut 2004 Aerial Photo Center Point Index Although these data have 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. 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. 20111208 State of Connecticut, Department of Environmental Protection Howie Sternberg 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