Contents 



Preface vii 



Conversion Factors, Non-SI to SI Units of Measurement viii 



1 — ^Background and Problem Statement 1 



Background 1 



Matagorda Bay 2 



PassCavallo 3 



Matagorda ship channel 7 



Gulf Intracoastal Waterway 9 



Problem Statement - Relocation of the GIWW 10 



Objectives and Procedures of this Study 11 



Units of Measurement 12 



2— Channel Shoahng 13 



Review of Dredging Records 13 



Dredged volume 13 



Channel cross section 17 



Sundown Island 17 



3 — Circulation Modeling 21 



Hydrodynamic Model 21 



Numerical Grid 22 



Measurements 24 



Calibration of Model 27 



Procedure 27 



CaMbration period conditions 27 



Discussion of calibration results 30 



Implementation of Alternative 36 



Adaptation of CaUbrated Model 37 



4 — Summary and Reconunendations 48 



Summary 48 



Morphology and circulation 48 



Dredging record 49 



