Data Distribution: Compressed Data
Data files are offered as LizardTech's MrSID Generation 2 .sid files. Target compression ratio was 4:1; one compressed file is roughly 8 magabytes in size.
A statewide collection of 2004 NAIP data requires about 31 Gigabytes of storage space. We do not plan to distribute compressed data files by any other means (cd-rom, zip drives, portable drives, ftp download, etc).
Illinois 2004 compressed NAIP DOQ data are available free-of-charge via:
- a List of Counties for UTM data download.
Data Distribution: Uncompressed Data
Contact the Illinois State Library(link is external) to obtain indiviual, uncompressed Illinois 2004 NAIP orthoimagery files.