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ICCUniTY CLAMIFICATION OF THIf PAOf 



8a. NAME OF FUNDING/SPONSORING ORGANIZATION (Continued). 



DEPARTMENT OF THE NAVY 



Naval Facilities Engineering Command 



18. SUBJECT TERMS (Continued). 



Advance maintenance 



Coastal processes 



Hydrodynamics 



Inlets 



Kings Bay (Georgia) 



Navigation channels 

 Numerical models 

 Sediment transport 

 Shoaling rates 



St. Marys Inlet 



Tides 



Waves 



Wave-induced currents 



19. ABSTRACT (Continued). 



The tidal model was verified using field data taken on 10 November 1982. The aver- 

 age year's wave climate for the study area was obtained from 20-year hindcast data. The 

 dataset included normal storms (but not hurricanes and tropical storms) . It was used in 

 running the wave and wave-induced current models. The sediment transport model determined 

 noncohesive sediment (sand) transport in the study area under the action of tides, waves 

 and wave-induced currents. It considered a mean tide and the average year's wave climate. 

 It was verified by comparing computed erosion/deposition rates in the navigation channel 

 with those obtained from field surveys taken during 1980-81. There was good agreement 

 both with respect to trends and magnitudes. 



While all four models were run for base conditions, only the tidal model and the 

 sediment transport model were run for Plan 1 conditions to meet the urgent need for model 

 results. Based on the model results and available information, recommendations on advance 

 maintenance dredging are made for various reaches of the navigation channel. 



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