Abstract
The Geospatial Data Clearinghouse has been operating in the United States since 1996 to provide a discovery service for digital geographic information of all types. Primarily designed to facilitate sharing of data collected and managed by US Federal government activities, the Clearinghouse technology has been widely deployed at all levels (government, private, and academic) in the US and other countries, linking prospective GIS and imagery data users with data providers of all types. This article describes the history, content, and direction of the Geospatial Data Clearinghouse designed and implemented by the US Federal Geographic Data Committee.
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