The Elevation Query Web Service returns the elevation in feet or meters for a specific latitutde/longitude (WGS 1984) point from the USGS Seamless Elevation datasets hosted at <a href="http://eros.usgs.gov/">EROS</a>. The elevation values returned default to the best-available data source available at the specified point. Alternately, this service may return the value from a specified data source, or from all data sources. If unable to find data at the requested point, this service returns an extremely large, negative value (-1.79769313486231E+308). View the detailed <a href="/XMLWebServices2/Elevation_Service_Methods.php">Elevation Service Methods</a> description for more information on the methods and parameters used in this service. Visit <a href="http://gisdata.usgs.gov/">http://gisdata.usgs.gov/</a> to view other EROS Web Services. Returns a value from a single elevation source for a given latitude/longitude point Returns values from all elevation sources for a given latitude/longitude point Returns a value from a single elevation source for a given latitude/longitude point Returns values from all elevation sources for a given latitude/longitude point Returns a value from a single elevation source for a given latitude/longitude point Returns values from all elevation sources for a given latitude/longitude point The Elevation Query Web Service returns the elevation in feet or meters for a specific latitutde/longitude (WGS 1984) point from the USGS Seamless Elevation datasets hosted at <a href="http://eros.usgs.gov/">EROS</a>. The elevation values returned default to the best-available data source available at the specified point. Alternately, this service may return the value from a specified data source, or from all data sources. If unable to find data at the requested point, this service returns an extremely large, negative value (-1.79769313486231E+308). View the detailed <a href="/XMLWebServices2/Elevation_Service_Methods.php">Elevation Service Methods</a> description for more information on the methods and parameters used in this service. Visit <a href="http://gisdata.usgs.gov/">http://gisdata.usgs.gov/</a> to view other EROS Web Services.