Proceedings of the Ninth International Conference On: Urban Drainage, Date: 8 September 2002 through 13 September 2002, Location: Portland, OR, Sponsors: Joint Comm. Urb. Drain. Assoc. Hydr. Res. and Intern. Water Ass.;Urban Water Resourch and Res. Counc. of the Environ. and Water;Resources Institute of ASCE