Portal 15:23 hr  PDT  [UT - 7]    Monday November 23, 0000   About Numbered New Subdomains Search/Index Contact Us Contact Us 100.  General 200.  Research 300.  Publishing 400.  Learning 500.  Biodata 600.  Restricted 700.  Reports 800.  Lectures 900.  Personal To refresh picture Forefront of slide at Pie de Cuesta, Vítor Valley, Arequipa, Perú (2007)   210.  Ojos Negros valley 220.  Tlaxiaco constructed wetland 230.  Alamar hydrology 240.  Alamar hydroecology 250.  Alamar sustainable architecture 260.  Tecate Creek restoration 270.  Vitor valley 280.  Groundwater studies 290.  Current research Iguaçu Falls, on the Iguaçu river, on the border between Brazil and Argentina Portal   Civil and Environmental   Engineering   SDSU