Sebastian Araya specializes in GIS watershed analysis, geographic visualization, cartography, and development of interactive mapping applications. He has over eight years of experience in computerized mapping and GIS systems. Mr. Araya has developed new web-based tools to aid environmental assessment by linking information design methods with database management software. Mr. Araya previously worked as an independent GIS and cartography contractor, as well as a GIS analyst for the Chilean government. In his Masters thesis, he mapped urbanization growth in Santiago, Chile, and analyzed its impact on storm generated runoff using a watershed approach combining statistical methods and GIS.