Stormwater Management Solution

by Shi-En Shiau, (M.ASCE), Proj. Mgr.; Grainer, Inc., Phoenix, Arizona,
Mark G. Landsiedel, Proj. Mgr.; City of Scottsdale, Arizona,

Serial Information: Civil Engineering—ASCE, 1995, Vol. 65, Issue 7, Pg. 70-71

Document Type: Feature article

Abstract: Flash floods are a threat to both existing homes and future development in the Scottsdale, Ariz., area. Engineers studies various alternatives for effective stormwater management an weighed the merits of doing nothing, developing alternative stormwater channel alignments and enhancing the existing channels. They selected the last option, and are using computer modeling to predict flood patterns and plan improvements to the channels. The area is part of four separate alluvial fans built up by sedimentation deposits over thousands of years. Since natural drainage channels through this topography are generally unstable, project engineers have used simultaneous dynamic simulations modeling to establish design parameters for the network of proposed channel improvements. Because the city's geographic information system (GIS) will be used for their future management, all survey and data sets for the alignments demanded a high level of definition and had to conform to the symbology, layering and graphic standards brought on line with the city's system. The $66 million Desert Greenbelt project will enable the three channels them to handle a 100-year storm. An eight-month fast-track design is now underway for phase 1 of the project, and construction is expected to start in the summer of 1996.

Subject Headings: Arizona | Stormwater management | Drainage systems | Channel stabilization | Dynamic models |

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