Portal 05:42 hr  PDT  [UT - 7]    Sunday November 22, 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 Rio Negro at Manaus, Amazonas, Brazil (1989)  410.  Hydraulics 420.  Hydrology 430.  Environmental Hydrology 440.  Computer Science 450.  Computational Hydrology 460.  Surface-water Hydrology 470.  Presentations 480.  Third party 490.  Other learning Lagoa Chacorore, in the Upper Paraguay River Basin, Mato Grosso, Brazil Portal   Civil and Environmental   Engineering   SDSU