19. In addition to the CERC experience discussed in this part of the 

 report, side-scan sonar has been used by other investigators for inspecting 

 coastal structures. Some of these applications are addressed in Part IV. 



Cleveland Harbor 



20. The eastern 4,400 ft of the Cleveland Harbor breakwater (Figure 7) 

 was rehabilitated with over 29,000 2-ton unreinforced dolosse in 1980 and 1981 

 (Figure 8). Funding from the MCCP Program provided for a series of monitoring 

 efforts to assess the condition of this structure. An integral part of the 

 monitoring program was the use of side-scan sonar to evaluate the underwater 

 condition of the dolos rehabilitated section. The monitoring effort gained 

 additional significance after an April 1982 storm (with a 100-yr return period 



LAKE 



ERIE 





SC — 



■~\Sr | 



CLEVELAND 



y\ NY 



PA 



OH ' 



VICINITY MAP 



DOLOS 

 REHABILITATION. 



LAID-UP BLOCK SECTION- 



S-PRIMARY 

 STUDY AREA 



CLEVELAND 



SCALE 



1000 1000 2000 FT 



Figure 7. Cleveland Harbor location map 



16 



