----------------------------Original message---------------------------- Does anyone know of high resolution sources of digital terrain elevation data for the United States? I'm currently very interested in the state of Texas. I need resolution < 10 or 15 meters in all three dimensions. Thanks --------------------------+------------------------------------------ Charles Gilley | All comments are my own... Senior Software Engineer -|- AEL/Cross Systems | Cross Systems - We make your radar 404-475-3633 | see double, triple, or more. --------------------------+------------------------------------------