south and a large shoal from 100 to 400 m south of the pier, centered 350 m 

 from shore, 



109. The next survey completed on 9 February shows the trough elon- 

 gating further to the south and as much as 0.75 m of erosion to the shoal on 

 the south side of the pier. Sediment eroded from the shoal was deposited in- 

 shore on the beach as well as seaward. 



110. An unseasonably high occurrence of waves from the south during 

 March resulted in up to 0.75 m of accretion south of the pier, thus making the 

 trough more symmetric. In addition, as much as 1.5 m of sediment was de- 

 posited north of the pier, building a shoal out to the 4-m depth. North of 

 the pier (300 m) , extensive erosion was measured offshore (50 to 250 m) . A 

 similar erosion/accretion pattern has been observed during some summers. This 

 pattern usually is associated with low-to-moderate wave heights from predomi- 

 nantly southerly directions, as occurred during this March. These waves have 

 insufficient energy to maintain the northerly flow of sediment along the shore 

 through the pier, and thus accretion occurs. Waves reaching the beach north 

 of the pier's influence cause localized erosion because of the lack of sedi- 

 ment from the south. 



111. The May survey showed a shallow, symmetric trough under the pier 

 and up to 1.25 m of accretion along the beach from 50 to 200 m offshore with a 

 corresponding erosion of the nearshore bar at 250 m. 



112. In June, the trough was relatively shallow and sjomnetric. Only 

 minor changes have occurred since the last survey. 



113. Low wave conditions persisted through June, July, and the first 

 part of August as reflected in the minor accretion of sediments on the beach 

 and otherwise minimal changes to the bathymetry measured during those months. 

 A small shallow fillet at the landward end of the pier developed during this 

 time. 



114. The bathymetric survey completed on 20 September showed a slightly 

 asymmetric trough under the pier and cuts in the bathymetry at the shoreline. 

 The trough, although relatively shallow, was steeper on the north side of the 

 pier than on the south. Landward of 250 m (approximately the -3 m depth) 

 there were cuts or nearshore troughs centered 300 m north and south of the 

 pier. Similar cuts have been observed north of the pier during previous sum- 

 mers when wave conditions were persistently less than 1 m and unidirectional 

 (Miller, Birkemeier, and DeWall 1983). Since the prior survey on 11 August, 



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