head; and for the north breakwater from 1,814 kg to 4,536 kg (2 to 



5 tons). Improvements at the site were completed in 1985. A layout of 



the structures is shown in Figure 44. 





SOUTH BREAKWATER*-^/ / 



If* - NORTH BREAKWATER 







y< 







CATTARAUGUS 







CREEK 





SCALE IN FEET 

 400 800 '200 





Figure 44. Layout of Cattaraugus Creek Harbor breakwaters, New York 



The shore-connected breakwaters and channel improvements at Cat- 

 taraugus Creek Harbor were monitored between mid-1983 and 1985 under 

 the MCNP program (Hemsley, Bottin, and Mohr 1991). Waves, structure 

 stability, sediment transport, channel stability, and ice-jam problems due 

 to the construction of the project were evaluated. At the conclusion of the 

 monitoring it was noted that localized damage had occurred at the south 

 breakwater head. Damage appeared to be due to stone cracking. The loss 

 of shattered stone caused adjacent stone to collapse into voids, resulting 

 in a steepening of the structure slope. 



An inspection of the Cattaraugus Creek Harbor south breakwater (Fig- 

 ure 45) on 8 October 1997 revealed voids in the armor stone layer at two 

 locations on the lake side of the breakwater along the curved portion 

 (sta 15+00 and sta 16+50). The void at sta 16+50 is shown in Figure 46. 

 An additional void was observed on the head of the structure (Figure 47), 

 which resulted in a steep slope. During the inspection several broken 

 stones were observed sporadically along the structures; however, overall 

 the structure appears to be in good condition. The north breakwater was 

 inaccessible and not inspected. It is protected by the curved south 

 structure. 



40 



Chapter 2 Project Descriptions and Inspection Results 



