Orthoimagery from 2005 is available for download and viewing via the Oregon Imagery Explorer.
The 2005 imagery was acquired through a consortium to take advantage of the USDA's Farm Services Agency (FSA) National Agricultural Imagery Program (NAIP). The Oregon Geographic Information Council (OGIC) and many other partners signed a memorandum of understanding MOU (pdf) to acquire imagery for Oregon.
2000 and 1995 Digital Ortho Quads
The DOQ links below download compressed orthos in Oregon Lambert from a http site. Most software programs need the .sdw file to geo-reference the .sid file. The .txt files show the compression statistics for each image.
Tile and Block numbers uniquely identify each quad in the United States. To look up the Ohiocode for a specific quad name, see: Ohiocode Quad Names (doc)
Oregon 1 Degree Tiles
Oregon One Degree Block Numbers
Oregon 1 Degree Block Numbers
Letter Code Index
Index of letter codes within each 1 degree block
Index of letter codes within each 1 degree block
Oregon 100k Quad Names
Oregon 100k Quad Names
Oregon 100k Quad Names
GPL Approved Tile Numbering
GPL (GIS Program Leaders) Approved Tile Numbering Scheme
GPL Tile Numbering 9x Format
GPL (GIS Program Leaders) Approved Tile Numbering Scheme: 9 character format
5a) Write TIFF files to CDROM, 4/CD, (the compressed SID files could also fit on the same CD)
6) Convert TIFF to Mr SID image, 1 SID file / quad (+/- 7mb)
7) Post SID files on FTP site for public distribution
Compression Software Lizardtech download page to get ArcView, & Microstation extensions for Mr. SID. Issues:
The imagery around the quad area will be changed from the original DOQ
The CD numbers will be different than the original delivery
