#1 



"FLAT" TOPOGRAPHY 

 Survey Lane 



DEPTH 

 VARIATION 



"STEEP" TOPOGRAPHY 

 Survey Lane 



DEPTH 

 VARIATION 



#1 : Position of vessel within survey lane during first bathymetric survey. 

 #2: Position of vessel within survey lane during second bathymetric survey. 



Figure 4-2. Possible variation in recorded depths within a bathymetric survey lane 

 can increase with sloped topographies. 



Monitoring Cruise at the Western Long Island Sound Disposal Site 



