Whether from paper maps, databases or other sources, data acquisition is an essential building block in creating an effective GIS.

GPS Data Surveying
Global positioning system (GPS) is an excellent method of increasing both the horizontal and vertical accuracy of point features. Data collectors pre-programmed with data entry forms expedite the collection process, and assure that only valid data are collected. GPS data acquisition provides the ability to build, enhance, and validate the data that exists in the field.

GPS Data Surveying

• GPS provides improves horizontal and vertical accuracy points
• Receivers can collect locations accurate to within a few centimeters
• Associated attribute data can be collected with data points