01 (Tl (7> <T? CT1 



O O O O 



Figure 5. Bathymetry of lower Lake Huron from SHOALS survey on 18 July 1997 (Note: Vertical 

 control is feet referenced to LWD ; horizontal control is feet referenced to Michigan 

 State Plane South. Units are English (i.e., feet) to maintain consistency with the data as 

 collected by SHOALS) 



immediate surrounding area. Depths in feet on both maps are referenced to LWD 

 for Lake Huron. 



One area southeast of the boat basin had depths in excess of 1 8 m (60 ft) that 

 were beyond the light-penetration range of the SHOALS system for the given 



10 



Chapter 3 Field-Data Collection 



