0.1 meter and sand accumulation was negligible. By October 1972, crest 

 elevation had increased an average of 0.5 meter and sand accumulation was 

 approximately 16.3 cubic meters per meter of beach. Figure 8 is a photo of 

 the plot in May 1973. 



Figure 8. Plot 1 (American beachgrass on 



45-centimeter spacing). May 1973. 



c . Long-Term Dune Growth . Growth of the dune at profile line 1 through 

 November 1977, 7 years after planting, is illustrated in Figure 9. Dune width 

 along profile lines 1 and 2 averaged about 61 meters by 1977. The landward and 

 seaward slope along these profile lines averaged 1 on 9.5 and 1 on 15.6, respec- 

 tively. Dune growth was generally in a seaward direction. The seaward shore- 

 line showed slight accretion until 1973; thereafter, slight erosion returned 

 the shoreline to near its original location. By 1977 the crest elevation had 

 reached 5.5 meters mean sea level (MSL) , 1.8 meters above the original planting 

 elevation. Total sand accumulation during seven complete growing seasons was 

 55 cubic meters per linear meter. Figure 10 is a photo of the plot in October 

 1977. 



d. Performance Summary , 

 dune in plot 1. 



Table 3 summarizes growth characteristics of the 



