Wickenburg Area Drainage Master Study/Plan – Wickenburg, AZ
Hoskin Ryan was contracted to revise 115-linear-miles of existing FEMA floodplain delineations of tributary watercourses to the Hassayampa River and Sols Wash. Tasks for the project included survey, geology, geotechnical investigations, public involvement, hydrology/hydraulics (HEC-1, HEC-RAS and FLO-2D models), sediment and scour analysis and FEMA submittals. A Flood Hazard Assessment was prepared for the flood prone areas. Three flood retarding structures were also evaluated and models were used to analyze the 100-year flow in the watercourses and to determine base flood elevations. The results were mapped in GIS to generate the floodplain delineations and final exhibits.