Sources of free orthoimagery
From World Wind Wiki
Below is a list of sites offering free orthoimagery of various locations. Note that most of the following do not offer the imagery up via WMS and is thus not easy (as yet) to incorporate into World Wind.
Belgium (Flanders)
- http:/www.gis-vlaanderen.be/gis/
Austria
Burgenland
Kärnten
Niederösterreich
Oberösterreich
Salzburg
Steiermark
Tirol
Vorarlberg
Germany
Maerkische Kreis
Bayern
Norway
United States
US Dept of Agriculture: Geospatial Data Gateway: Tons of GIS Data free for FTP download. Orthophotography for most of Country in 2005 (2-meter resolution MrSID).
ARKANSAS
City of Fayetteville, Arkansas - G.I.S.: City coverage, BW, early 2000, ~1 foot resolution, GeoTIFF
GeoStor - On-Line Mapping: NW Arkansas Orthophotography, Color 2004, GeoTIFF or MrSID, Pulaski County DigitalGlobe Orthophotography, 2004, GeoTIFF
Spatial Analysis Laboratory - Natural State Digital Database: Caroll County Aerial Photography - BW, 1 foot resolution, MrSID
CALIFORNIA
Napa County GIS: Free registration required to download 04/2002 1-foot, color orthophotos of Napa County, MrSid
Calaveras County: 2002 2-foot, MrSID, color; The lower areas of the county were flown in April 2002, the upper areas in July 2002.
Sonoma County: Free registration required to download April/May 2000 1 & 2-foot resolution, BW, MrSID for the entire county
ftp://ftp.ci.corvallis.or.us/pw/gis/orthophotos/ Davis, CA (2001, 2003,
http://casil.ucdavis.edu/casil/kerncog.org/ Perhaps they, too, can be of use some day!
California Spatial Information Library: Statewide B&W DOQQs
California Spatial Information Library: Sacramento/Stocton Delta High Resolution TIFFs
California Spatial Information Library: Modesto High Resolution TIFFs
California Spatial Information Library: Riverside/San Bernardino High Resolution TIFFs
California Spatial Information Library: Sacramento High Resolution TIFFs
California Spatial Information Library: San Francisco/Oakland High Resolution TIFFs
California Spatial Information Library: Stockton High Resolution TIFFs
California Department of Water Resources: Color Orthophotos (various years 1996 to 2001) for: Kings Count, San Joaquin County, Monterey County, San Benito County, Yolo County, Butte County, Colusa County, Glenn County, Kern County, Sacramento County, Sutter County, Napa County, Fresno County and Madera County (Free registration required)
COLORADO
City of Fort Collins: 1999 & 2002, 1/2 foot, color, MrSID
CONNECTICUT
MAGIC Geo-Spatial Data Resources: 1998 BW Hartford Metropolitan area, MrSID
MAGIC Geo-Spatial Data Resources: 1995 BW Digital Ortho Quads (CT State Plane), MrSID
I imagine this is really cool, but it didn't work for me: 1934 Fairchild Aerial Survey: The entire state, scanned and georeferenced!
DELAWARE
Delaware Geological Survey: "Georeferenced Delaware Hundreds Map Images From the Pomeroy and Beers Atlas 1868", GeoTIFF
http://www.udel.edu/dgs/dgsdata/GeoGIS.html: Geologic maps, limited state coverage, GeoTIFF
University of Delaware Spatial Analysis: 1997 DOQs (State of Delaware), 5-meter, JPEG (with ArcView World File)
http://datamil.delaware.gov/: April 2002 0.25 meter color infrared (Public Access limited to 1 Meter, must submit application for 0.25 meter imagery, also, you may not re-distribute the 0.25 meter imagery; so its useless for WW).
FLORIDA
Department of Environmental Protection: DOQQs from 1995, 1999 and 2004
Manatee County GIS: 2003 1-foot color, MrSID
Lake County: 1941, 1998, 2002, 2004
Sarasota County: 2002 1-foot panchromatic TIF, 2004 1-foot color TIF
HAWAII
ftp://gisftp.hicentral.com/AirPhotoImages/: Honolulu and some Oahu coastline (MrSID/JPEG)
IDAHO
Idaho Geospatial Data: 1-2 meter, natural color, MrSID National Agriculture Imagery Program
ILLINOIS
Illinois Natural Resources Geospatial Data Clearinghouse: 2000 Des Plaines River Watershed, MrSID, BW
INDIANA
ftp://itoc.in-span.net/, ftp://itoc-2.in-span.net/: 2003 NAIP, 1 meter, natural color, GeoTIFF quads or MrSID county mosaics (also see Indiana Spatial Data Portal - Aerial Photos (2003 NAIP)
IOWA
Iowa Geographic Map Server: 2004 color, 2-meter USDA National Agriculture Imagery Program (NAIP)
KANSAS
FSA National Agriculture Imagery Program (NAIP): 2003/2004, 2-meter, natural color, MrSID. Look under "Browse and Download Data".
Sedgwick County, Kansas Geographic Information Services: 1997 BW GeoTIFF, 2000/2003 MrSID, color
MAINE
Maine GIS Data Catalog: Spring 2003 1- and 2-foot color, MrSID for southwest Maine; May 2003 1/2 foot color, MrSID for Fort Fairfield; April 2001 1/2 foot color, MrSID for Cumberland County and part of Androscoggin County
MASSACHUSETTS
Massachusetts - Available GIS Datalayers: Early 2000s 0.5-meter, MrSID, color for the entire state.
MINNESOTA
The DNR Data Deli: 2002, 2003-04 Farm Services Administration color ECW
Land Management Information Center: Air Photos, USDA: 2002, 2003 NAIP 1-meter, natural color, MrSID
MISSISSIPPI
MARIS: 2004 NAIP Data: 2004 natural color 1-m, MrSID, entire state
MISSOURI
Missouri National Agricultural Imagery Program (NAIP) Data: 2003, infrared, MrSID
MONTANA
Montana State Library Natural Resource Information System: 1-foot color, MrSID of various cities in Montana See this message board posting for instructions on how to add this to World Wind.
City of Missoula: 1/2-foot color, MrSID
NEBRASKA
Nebraska FSA Rectified Digital Imagery: July-August 2003 US Farm Agency color, 1-meter, JPEG
http://www.dnr.state.ne.us/databank/fsa.html: July-August 2001 US Farm Agency color, 2-meter, JPEG
Lancaster County High Resolution Digital Ortho Imagery: 2002 Lincoln/Lancaster County color, 0.3-meter, JPEG
NEW HAMPSHIRE
NH GRANIT: 2003 NAIP 1-meter, natural color, MrSID
NEW JERSEY
New Jersey Image Warehouse: 2002 1-foot infrared, MrSID for entire state
NEW MEXICO
Bernalillo County: 1996, 1999, 2001, 2002, 2004 MrSid, color (haven't investigated all the folders)
New Mexico Resource Geographic Information System Program: older B&W digital orthoquads plus newer (2004) 1-foot natural color, MrSID
NEW YORK
- NAPP - DOQQ 1-meter infrared (MrSID)
- 2000 to present (updated every 3 years) - varying color types and resolutions (MrSID)
NORTH CAROLINA
Wake County: 1999 color & BW MrSID
NORTH DAKOTA
North Dakota Geographic Information Systems: City of Bismarck April 25, 2001, 1/2 foot BW MrSID; City of Mandan April 2001 1/2 foot BW MrSID; NAIP 2003 1-meter, color MrSID
OKLAHOMA
2003 NAIP Air Photo Images: Statewide color, MrSID
OREGON
City of Corvallis: 1999 GeoTIFF, color
PENNSYLVANIA
South-Central: South-central Pennsylvania 2003, MrSID, color, 2-foot PASDA Data Listing: Statewide 2004 1-meter CIR MrSID NAIP
RHODE ISLAND
Summer 2003, 1-meter, color GeoTIFF and MrSID
SOUTH DAKOTA
South Dakota Digital Data Base: Free registration required for 2003/2004 1-meter, natural color
TEXAS
Capital Area Council of Governments: 2002 2-foot, MrSID, color (10 county area centered around Austin)
UTAH
Utah Automated Geographic Reference Center: 2003 2-meter color MrSID, 2004 1-meter color MrSID
VIRGINIA
GIS at VCU: USDA NAIP Aerial Imagery Download Page: 2003 NAIP for select Virginia counties, 1-meter color MrSID
WASHINGTON
Spokane: 2003 NAIP, GeoTIFF, 2-meter, color
WEST VIRGINIA
West Virginia State GIS Technical Center: Spring 2003 statewide 2-foot, color, MrSID