On 3 December 1980, 2 months after nourishment the beach face in area A 

 was located at the base of the harbor's north breakwater, about 30 meters land- 

 ward of the position occupied on 16 June 1980 (Figs. 3 and 4). The beach face 

 in areas B and C (nourished beach) on 3 December 1980, however, was located 

 about 15 to 45 meters lakeward of the position occupied on 16 June 1980, which 

 resulted in the groins, piers, and docks being behind (landward of) the beach 

 face (Fig. 4). 



On 6 December 1981, 14 months after nourishment, the beach face in area A 

 was located at the west end of the harbor's north breakwater, eUDout 30 meters 

 lakeward of the position occupied on 1 6 June 1980 and about 45 meters lakeward 

 of the position occupied on 3 December 1980 (Figs 3, 4, and 5). The width of 

 the beach on 6 December 1981, as measured to the tree line was about 120 

 meters. At the northern end of area B the beach face was located about 15 

 meters lakeward of the position occupied on 3 December 1980, while at the 

 southern end of area B the beach face retreated landward about 7 meters. In 

 some parts of area C the beach face was located about 30 meters landward of the 

 position occupied on 3 December 1980. 



2. Substrate . 



The 144 Ponar grab samples collected in June, July, and October 1980 and 

 1981, together with observations of the substrate (in situ) made from the ves- 

 sel deck and with an underwater television camera, revealed that the substrate 

 in the study area ranged from silty clay to large boulders (App. A). The sub- 

 strate on all transects was generally cobble mixed with coarse sand and fine 

 gravel at stations 1 and 2, and was mostly cobble with isolated pockets of sand 

 and fine sand at stations 3 and 4. The one exception occurred on transect III 

 at stations 2 and 3 vrtiere inspection of the sediment samples, as they were 

 removed from the grab, revealed the presence of pockets of silty clay on a 

 predominantly cobble bottom. Boulders as large as 2.5 meters in diameter were 

 distributed irregularly throughout the study area-. A remotely operated under- 

 water television camera was used to obtain permanent videotape records of the 

 substrate at each station to describe the composition of the substrate com- 

 ponents that were too large to sample effectively with the. "Ponar grab. However, 

 sea conditions, low water clarity, and equipment failure prevented the comple- 

 tion of the required videotape recordings. 



Grab sample size varied widely throughout the study reflecting mainly the 

 effectiveness of the Ponar grab on the different substrates encountered. 

 However, the samples obtained provided an adequate representation of the fine 

 gravel-very fine sand component of the substrate in the areas sampled (App. A). 

 The fine and medium sand fractions collectively accounted for 79 to 85 percent 

 of the total (by weight) in each of the sampling periods during both years, the 

 very fine sand fraction accounted for 11 to 1 4 percent, and coarse sand and 

 fine gravel together accounted for 1 to 1 percent (Table 1). Friedman's test 

 was used to determine if there were significant (P = 0,05) differences in 

 particle-size distribution of the sand-gravel component of the substrate at 

 station 1 in all six transects (Table 2) and at stations 1 to 4 combined among 

 all six transects (Teible 3) within each of the six sampling periods. No 

 significant differences were found. 



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