Orthophotography



Washington County currently has four digital orthophotography datasets. An orthophotograph is a perspective aerial photograph from which distortions owing to camera tilt and ground relief have been removed (Dictionary of GIS Terminology, ESRI Press, 2001). All four projects were completed as part of regional projects coordinated by the Southeastern Wisconsin Regional Planning Commission (SEWRPC). The images were acquired during the spring of the year in leaf off condition.

2015 - True color photography with 6 inch pixel resolution. Standard paper product printed at 1 inch equals 100 ft (1/4 section per E-size Sheet).

2010/2011 - True color photography with 6 inch pixel resolution. Standard paper product printed at 1 inch equals 100 ft (1/4 section per E-size Sheet).

2005 - True color photography with a 1 foot pixel resolution. Derived black and white photos are also available. Standard paper product printed at 1 inch equals 200 ft (1 section per E-size sheet).

2000 - Black and white photography with a 1 foot pixel resolution. Standard paper product printed at 1 inch equals 200 ft (1 section per E-size sheet).

1995 - Black and white photography with a 2 foot pixel resolution. Standard paper product printed at 1 inch equals 400 ft (4 sections per E-size sheet).

Historic aerial photography from 1941, 1950, 1963, 1970, 1980, 1985,and 1990 is also available. See the historic aerial photography page for additional information.

Methods to Access Orthophotography

Metadata