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Historical Black and White Aerial Photography for Seminole County, Florida Starting in 1940 with the Agricultural Stabilization and Conservation Service (ASCS), then a Department of the US Department of Agriculture, a series of aerial photographs was acquired for Seminole County. These ASCS aerials, originally provided and stored as black and white 9" x 9" contact prints, as well as other paper aerial photos collected over the years by Seminole County's Engineering Office have been scanned and provided digitally in the jpg format. The images are not currently geo-referenced and hence cannot have other GIS data layers overlaid without additional processing. The scanned imagery includes 1940, 1948, 1957, 1968, 1972, 1974, 1980, 1986, and 1989 photography. The Index Map to the aerial photographs by year may be in several formats depending on available source material: 1. The original scanned paper map, but geo-referenced and rectified. An ESRI GIS data format shape file derived from the above as a polygon feature. 2. The original CAD file of the Index Map. An ESRI GIS data format shape file derived from the above as a polygon feature. The Index Map for the years 1972 to 2002 is common. These scanned historical aerials have been made available courtesy of the County Engineer's Office located in Reflections Plaza at 520 W. Lake Mary Blvd, Suite 200, Sanford, Florida 32773 and the Geographic Information Services Office of the Information Technologies Department located at 1101 E 1st Street, Sanford, FL 32771. For a discussion of the availability of historical hard copy photography, follow this link. For each of the following samples the I-4 / Lake Mary Blvd interchange is in the lower right corner.
1940
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1948
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1957
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1968
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1972
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1974
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1980
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1986
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1989
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Other Digital Aerial Photography Seminole County GIS has digital aerials from several additional sources available to the public as well. The U.S. Geological Survey (USGS) in conjunction with various State agencies began acquiring and making available to local Governments, quadrangle based Digital Ortho Quarter Quad (DOQQ) imagery in the early 1980s as part of a program to collect nationwide imagery at a common scale for planning and land management purposes. As a result of that program and other efforts, the County has complete, registered and available for use with Geographic Information Systems digital aerial coverage from several different years. These include 1984 (color infrared (CIR) DOQQs), 1995 (B&W and CIR DOQQs), 1999 (color and B&W acquired under County contract), 2000 (CIR DOQQs), 2002 (Dept. of Transportation B&W), and 2003 (Dept. of Revenue color). Due to the large file sizes involved all digital aerial photography have been compressed and are stored in Mr. Sid format. This digital aerial photography represents a tremendous resource to historians and land planners studying urban growth and land use change. For further information contact the Seminole County GIS office at (407) 665 7432.
For each of the following samples the I-4 / Lake Mary Blvd interchange is in the lower right corner.
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1984 CIR
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1995
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1999 Color
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1999 B&W
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2000 CIR
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2002
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2004
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Some Useful Links
For free software for viewing or using imagery, we recommend:
ESRI ArcExplorer GIS software
MrSid Image Viewer
Other sources for aerial photography and satellite imagery we've found useful:
St John's River Water Management District
Aerial Cartographics of America
The US Geological Survey Image Library
National Aerial Photography Program (NAPP)
Spot Image
Space Imaging provides access to remote sensing satellites and sells data and information products derived from Earth imagery.
Quite possibly the largest online atlas of high-resolution worldwide satellite imagery and aerial photography. TerraServer.com is the online source for overhead imagery.
The Earth Resources Observation Systems (EROS) Data Center (EDC) is a data management, systems development, and research field center for the U.S. Geological Survey's (USGS) National Mapping Division.
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