Table 37 (Concluded) 



Date(s) Construction and Rehabilitation History 



1940 The inner 7,300 ft of the north jetty, shoreward of the high 

 waterline, had sanded in. 



1941- The north Jetty was reconstructed to +20 ft mllw for 7,760 ft seaward 

 1942 of the high water shoreline, then +30 ft mllw for an additional 



528 ft. The 412 ft seaward of the reconstructed section was at mllw 

 and was not restored. 



1942- The outer 325 ft of the north jetty was leveled, and 400 ft of the 

 1949 reconstructed section was lowered 4 ft below grade. 



1946- An additional 900 ft of south jetty was destroyed, and the next 

 1951 4,100 ft subsided 10-20 ft below grade. 



1949- An additional 325 ft of north jetty was leveled, and a 1,000-ft 

 1953 section was lowered to 10 ft below grade. 



1950- A hydraulic model study was conducted by WES. 

 1952 



1951- An additional 900 ft of south jetty was destroyed, and the next 

 1953 4,500 ft subsided to 18-20 ft below grade. 



1953- An additional 1,700 ft of south jetty subsided to depths of approxi- 

 1962 mate mllw, leaving less than 5,000 ft of the jetty near grade. 



1961 Only 2,000 ft of the reconstructed portion of the north jetty 

 remained at or near grade. 



1966 The south jetty (4,000 ft) was reconstructed to +8 ft mllw. 



1969- A hydraulic model study of Gray's Harbor was conducted. 

 1971 



1975- A 6,000-ft length of the north jetty was rehabilitated. 

 1976 



1985 The harbor and cross sections of the jetties are illustrated in Fig- 

 ure 70. The outer 1,200 ft of the north jetty and 5,600 ft of the 

 south jetty are submerged. There is some deterioration of the south 

 jetty, with severe scour along the channel side toe of the jetty. 

 The overtopping conditions on the north jetty in the area of the 1975 

 rehabilitation work threatens a roadway on the land side of the 

 jetty. 



151 



