General Methodology for Inlet Reservoir Model Analysis of Sand Management Near Tidal Inlets

This paper introduces a general methodology for applying the Inlet Reservoir Model in regional sand management at inlets. The procedure is based on numerical modeling and data analysis for various spatial and time scales to evaluate the inlet evolution, existing condition, and alternatives for a proposed design. The methodology is discussed through a case study for Hurricane Pass, on Florida gulf coast. The case study addresses potential consequences of proposed dredging of the Hurricane Pass ebb shoal for restoration of the beach on Honeymoon Island State Park. The analysis is based on observed inlet evolution, and modeling of regional hydrodynamics, waves, and sediment transport at various times marking main stages of the inlet system evolution. Modeling results serve as input to the Inlet Reservoir Model to quantify volumetric change and bypassing rates between the different morphologic features that comprise the inlet shoal system. The model is then applied to assess the long-term consequences of proposed dredging on the adjacent beaches and recovery rate of the borrow area.