LEGEND 



Modeled Longshore Transport 

 Potential In m^/yr (COSMOS 2D/3D) 



l\-^^»^ 



Deposition in 

 Bamymetry Depression 



<UiUiUJ> Accretion 



^"-'-'-"J > Erosion 



^^ Dredging 



MICHIGAN 



Panel #8 Lowering Similar 



to Panel #1 (representative of 



background erosion raW") 



'K 



^A, 



Large Depression In Lake Bed 

 Developed Befween 1945 - 1965 



Rapid Lake Bed Lowering 

 (2 to 3m/20yr) 



NOTES; 



1. Growth of FiUet Deposita (Panels 2 & 3) 



2. High Variability in Long Term Water Levels 



3. Lowering in Panels j^l & ^8 is similar 



4. Panels 4-7 severe lowering (downdrift deff.) 



5. Cohesive Lowering Estimated at 20 m3/m/yr south of harbor jetties 



6. 1964 Water Uvel was all Lime low 



7. No Bypassing, only Channel Infilling 



8. Transport Volumes are m3/yT 



Figure 35. 1945 to 1965 descriptive model 



80 



Chapter 5 Interpretation of Results - A Descriptive Model of Coastal Morphodynamlcs 



