Two Dimensional Modeling of the Mobile River Delta and the Mobile Bay System

by Conor C. Shea, (M.ASCE),
Charles D. Powell, (M.ASCE),
Michael A. Ports, (F.ASCE),

Document Type: Proceeding Paper

Part of: North American Water and Environment Congress & Destructive Water


Two dimensional hydraulic modeling of Mobile Bay and the Mobile River Delta was conducted to determine critical hydraulic conditions for scour evaluations at bridges in the Mobile Bay area. The interactions between riverine floods on the Mobile River and tidal storm surges on Mobile Bay create a complex hydraulic environment which requires examination of both riverine floods and tidal storm surge events. Development of a finite element network that accurately represents distinctly different physiographic areas such as Mobile Bay (a shallow estuary) and the Mobile River Delta (a braided distributary system) required a large finite element network with large variation in individual element sizes.

Subject Headings: Two-dimensional models | Hydraulic models | Bays | Rivers and streams | Storm surges | Finite element method | Floods | Scour

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