1. a Department of Urban Architecture and Community Planning , The University of the District of Columbia , 4200 Connecticut Avenue NW, Washington , DC , 20008 , USA
2. b Department of Civil Engineering , The University of Texas at Austin , 1 University Station C1792, Austin , TX , 78712 , USA E-mail:
3. c Laboratory of Hydraulic Constructions (LCH) , Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 18, CH-1015 , Lausanne , Switzerland E-mail:
4. d Laboratory of Hydraulic Constructions (LCH) , Ecole Polytechnique Fédérale de Lausanne (EPFL) , Station 18, CH-1015 , Lausanne , Switzerland E-mail: