Portal 14:08 hr  PDT  [UT - 7]    Monday November 23, 0000  
To refresh picture Ferry at Guaira, on the Rio Parana, Parana, Brazil (1992) 
710.  Parana-Paraguay waterway
720.  Ojos Negros Sustainable Management
730.  Alamar Flood Hydrology
740.  Alamar Sustainable Architecture
750.  Tecate Flood Hydrology
760.  Tecate Flood Hydraulics
770.  Groundwater Sustainability
780.  Hydrology of Tierra del Sol
790.  Sustainable Yield of Groundwater
Roman aqueduct at Segovia, Spain Portal   Civil and Environmental   Engineering   SDSU