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Last updated 07/17/2012

 Survey Control Benchmark

The Department of Transportation maintains a repository of horizontal and vertical control points for Lee County. Many of these records have been scanned and are available on this web page.


Horizontal Control Recovery Sheets

Attached recovery sheets are provided as a source of reference to Florida surveyors and mappers with the understanding that it is the user's responsibility to confirm the information's reliability and accuracy. Lee County does not make any warranties, express or implied, regarding the accuracy or reliability of the information contained herein.

For more information, please call (239) 533-8502 or send us an e-mail.

 


 
Lee County's Global Positioning System (GPS)
What is GPS?
Originally developed by the Department of Defense, the Global Positioning System (GPS), was first launched in 1989.  24 NAVSTAR satellites continuously broadcast time and position messages, and a network of tracking stations monitor and control the GPS satellites in orbit. GPS works using triangulation. A GPS receiver measures distances from (three or more) satellites using the travel time of radio signals and then determines its position by calculations. Precise to within a few feet for military uses and about 300 ft (90 m) for non-military uses, the GPS is used for many purposes, including navigation, surveying, tracking vehicles, people & migrating animals, and plotting the crop yields of small sections of farmland.

Horizontal Control Recovery Sheets
Attached recovery sheets are provided as a source of reference information to Florida Surveyors and Mappers with the understanding that it is the responsibility of the user to confirm the reliability and accuracy of the information. Lee County does not make any warranties, express or implied in regard to the accuracy or reliability of the information contained herein.

 GPS Key Map

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