County
Status maps below are from a 2-page SCO information sheet, Digital Orthophotos (January 2009). Ortho imagery over counties is generally available from the Land Information Office in each county.
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Municipal
The WisconsinView data portal contains Spring 2007, 1-foot resolution, color images of the Madison area (50% of Dane County) and the Milwaukee area (Milwaukee, Ozaukee and Waukesha Counties, plus a small portion of Washington County). Imagery may be downloaded at no cost.
At least 100 other municipalities in the state have obtained digital orthophoto coverage since 2005. Contact the individual cities or villages for information.
Statewide
The WisconsinView data portal contains statewide National Agriculture Imagery Program (NAIP) 1-meter resolution, color, summer (leaf-on) digital orthophotos from 2005 and 2008. Imagery may be downloaded at no cost.
Planned
The Wisconsin Regional Orthophotography Consortium (WROC), led by three Wisconsin regional planning commissions (RPCs), is planning and organizing the acquision of high-resolution imagery across the state in Spring 2010. Counties and municipalities will contract directly with service providers pre-qualified by the consortium. Contact the WROC organizers for more information.
Imagery for the Nation is a program plan to create and fund a new nationwide aerial imagery program that will collect and disseminate standardized multi-resolution image products on set schedules. Local, state, regional, tribal and federal partners will participate in this program when funding is set. Imagery acquired through this program will remain in the public domain and be archived for preservation.
Applications and History
As a technology development, digital orthophotos began to appear in the late 1980's. The concept of a National Digital Orthophoto Program (NDOP) was proposed in 1990 by the U.S. Dept. of Agriculture-Natural Resources Conservation Service(USDA-NRCS), USDA-Farm Services Agency (USDA-FSA), and the US Geological Survey (USGS). Technical specifications (quarter-quadrangle format, black & white images, one meter resolution) were soon established, and the NDOP began producing digital orthophotos in 1993 using National Aerial Photography Program (NAPP) imagery. The NDOP facilitated virtual nationwide coverage of the lower 48 states by 2002.
For more information, see the SCO's information sheet, Digital Orthophotos, January 2009.
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