Connecticut 1990 Orthophoto Tile Index contains polygon features that dellineate the boundaries used by the USGS in the creation of the 1990 digital ortho quarter quads (DOQQs) for Connecticut. This index grid may be used to determine the name of the 1990 DOQQ file for a particular tile. Aerial photography was acquired during the spring of 1990. It is 1 meter orthorectified imagery, single band (black and white), leaf off. The ground resolution for this imagery is 1 meter per image pixel.
Use this index grid to determine the name of the Connecticut 1990 DOQQ image file for a particular tile.
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.
Internal feature number.
ESRI
Feature geometry.
ESRI
State of Connecticut, Department of Environmental Protection
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.
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.
State of Connecticut, Department of Environmental Protection
Northeast quarter quandrangle
Northwest quarter quandrangle
Southeast quarter quadrangle
Southwest quarter quandrangle
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.
State of Connecticut, Department of Environmental Protection
Orthophoto tile name - Unique name assigned to each orthophoto tile.
State of Connecticut, Department of Environmental Protection
79 Elm Street