| Description | Spatial | Attributes |
This 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.
publication date
No restrictions or legal prerequisites for using the data. 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 the State of Connecticut, Department of Environmental Protection 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 Orthophoto Center Point layer, published by CT DEP and CT DOT.
79 Elm Street
79 Elm Street
The horizontal positional accuracy of this data is unknown.
Internal feature number.Definition Source:
ESRI
Feature geometry.Definition Source:
ESRI
Quadrangle Number - An ID number designated by the State of Connecticut, Department of Environmental Protection, Natural Resources Center in the 1980's to uniquely identify individual 7.5 minute 1:24,000-scale USGS topographic quadrangle maps. The Quadrangle Number value of each point feature identifies the USGS topographic quadrangle map that the orthophoto center point is located on.Definition Source:
State of Connecticut, Department of Environmental Protection
Quadrangle Section - There are 4 sections per 7.5 minute quadrangle, each one corresponding to a 3.75 minute quarter quadrangle area. The Quadrangle Section value of each point feature identifies the (NE, NW, SE, SW) section of the 7.5 minute 1:24,000-scale USGS topographic quadrangle map that the orthophoto center point is located on.Definition Source:
State of Connecticut, Department of Environmental Protection
Quadrangle Name - Name of the 7.5 minute 1:24,000-scale USGS topographic quadrangle map published by the USGS that the orthophoto center point is located on.Definition Source:
US Geological Survey
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.