Table 48 



Westhaven Cove Small-Boat Basin 



West Port, Washington 



Date(s) Construction and Rehabilitation History 



1929 The Port of Gray's Harbor dredged a small-boat basin in Westhaven 

 Cove. 



1935- Reconstruction of the south Jetty at Gray's Harbor blocked sand 

 1939 transport to Point Chehalis causing severe erosion. 



1948 The project was adopted. 



1950 West Port Marina breakwaters A and B were constructed of treated wood 

 pilings with a top elevation of +17 ft rallw and a minimum penetration 

 of 5 ft. Rock reinforcing was placed along the breakwater to an ele- 

 vation of +4 ft mllw, with the crest extending 4 ft on each side. 

 Creosoted 3- by 12-in. planking was placed along each side of the 

 breakwater between elevations +4.5 and -0.5 ft mllw. 



1953 Breakwater A was reinforced with rock and planks. 



1954 Extension to the marina was recommended. Additional planks were 

 installed on breakwater A. 



1958 The Port of Gray's Harbor closed the opening between breakwaters A 

 and B to lessen the effect of westerly swells entering the basin. 

 The Corps constructed breakwater C with a design similar to that used 

 in breakwaters A and B (1950), except that every twelfth pile was 

 driven to a minimum penetration of 15 ft. A seven-pile dolphin was 

 constructed at the harbor entrance end of the breakwater with a 

 minimum penetration of 10 ft for each of the piles. 



1959 Gaps of up to 4 in. between the pilings of breakwater C allowed an 

 unacceptable level of wave energy to enter the basin. The breakwater 

 was therefore modified by adding 3- by 12-in. planking between the 

 top of the rock pile at +4.0 ft mllw and the bottom of the 10- by 

 12-in. wales at elevation +14.5 ft mllw. 



1973 The closure breakwater was constructed. 



1978 Further extensions to the marina were recommended. 



1979 Extensions to the present design were completed. An existing 350-ft 

 breakwater attached to breakwater C was removed, an 865-ft extension 

 to breakwater C was constructed, and a 200-ft stub breakwater was 

 constructed. The extension to breakwater C was constructed of timber 

 pile with a rock toe, with a 200-ft rubble-mound section to reduce 

 wave reflection back to a commercial pier. Crest elevation was 



+17 ft mllw. 



(Continued) 



174 



