Cahan wrote a report describing alternative funding methods based on 21 examples of financial intermediaries that the government relies on, such as regional airport authorities, community development corporations and Fannie Mae. Those models might be applied to the collection and maintenance of spatial data, he said. Data guidelines The Federal Geographic Data Committee has identified seven types of data to be used when building framework spatial datasets to be shared across government and industry. Elevation and bathymetry Topography information relating to land and the depths of bodies of water. Geodetic control Process of finding exact points on the earth s surface through surveying techniques.
Government units Political boundaries, such as city and county borders.
Transportation Streets, highways, rail lines. Cadastral Land parcel ownership and boundaries. Hydrography Lakes, streams and other bodies of water, and where they flow. The FCW.COM privacy policy , our link disclaimer and information about linking to us and online permissions .