VI-149 



The solution to these oroblems might well be approached by 

 simulation techniques. It is urged that efforts be Intensi- 

 fied to provide physical and mathematical models of estuarine 

 systems which are being subjected to population and Industrial 

 pressures. Experience indicates that when such models are 

 available they are used extensively by Federal, State, and 

 industrial interests to provide guidance for the proper manage- 

 ment of estuarine resources. 



Two systems of simulation or modeling are normally considered: 

 the physical model and the mathematical model. Probably the 

 true utility of the physical model has not yet been established. 

 The development of such a model for an important estuary has a 

 great deal of appeal for teaching, demonstration, and to some 

 extent for control purposes in addition to the oredictive 

 capability rendered. There is no question that advantages of 

 such a model are clear for teaching and demonstration. What is 

 not as clear is the extent to which such physical models may 

 be employed to predict and solve problems of pollution, sedimen- 

 tation, physical modification and structures in the estuary. 



The use of mathematical models to simulate the dynamic phenomenon 

 of the estuary has only recently been subjected to rigorous 

 examination. Research in this area should be encouraged. A 

 complete appraisal of the relative merits of physical and 



