methodology applied to channel hydraulics and associated sediment transport may produce 

 significant benefits, leading to reduced maintenance costs and enhanced project performance. 

 To be effective, this methodology must be easily applied, capable of quickly identifying 

 problems, able to classify' problems by key characteristics, and able to facilitate the identification 

 of realistic engineering solutions common to each problem category. 



Table 2 



Summary of Dredging Activity at East Pass (1969-1995) 



Location 



Total Volume, cu yd 



Rate of Activity, cu yd/year 



Dredging Activity Summary 



Basin/East Pass Channel 



96,727 



3,720 



Deposition Basin 



92,791 



3,569 



East Pass Channel 



760,050 



29,233 



Entrance Channel 



220,926 



8,497 



Old Pass Channel 



724,339 



27,859 



Outer Bar 



41 7,206 



16,046 



West Cut 



89,029 



3,424 J 



Disposal Site 



East Jetty 



50,486 



1,942 



East Jetty Sand Dike 



342,395 



13,169 



East Side Jetty 



14,645 



563 



Nearshore Site 



353,747 



13,606 



Norriego Point 



1,260,193 



48,469 



Scour Hole 



54,595 



2,100 



Spur Jetty Scour Hole 



135,489 



5,211 



Weir West Jetty 



92,791 



3,569 



Total Material Dredged 



2,304,341 



88,629 



The DMS attempts to embody this methodology by taking a three-pronged approach to the 

 evaluation of shoaling problems. The DMS-Data Manager component consolidates all the 

 pertinent information concerning maintained channels in one place and in an easily interpreted 

 graphic format. The DMS-Manual, an encyclopedia for shoaling signatures, simplifies the 

 classification of shoaling mechanisms through comparisons with generalized illustrations, 

 example photos, and case studies. The DMS-Analytical Toolbox contains a suite of programs 

 and analytical models for advanced analysis of shoaling problems. In addition, this component 

 provides recommendations for output format to facilitate diagnosis of shoaling mechanisms and 

 investigation of solutions. 



This report seeks to evaluate the DMS concepts through the application of each of the DMS 

 modules on a demonstration site, the shoaling hot spots at East Pass Inlet (Figure 5). 



14 



Objectives and Procedures of this Study 



The objective of this study is to determine the causes of the shoaling in the maintained 

 channels at East Pass Inlet and to recommend a solution that will reduce the frequency and cost 



Chapter 1 Background and Problem Statement 



