it extended across the entire river mouth in a northerly direction and seaward 

 of Camp Ellis Beach. Sediment movement at the river mouth and southern 

 portion of Camp Ellis Beach is shown in Photos 142-145 for the test series. 

 Accretion of the beach occurred for these tests. The progression of sediment 

 tracer movement along the northern portion of Camp Ellis Beach is shown in 

 Photos 146-149. Accretion of the shoreline occurred; however, it was noted 

 that movement of material to the north out of tlie Camp Ellis Beach area con- 

 tinued throughout the entire test series. 



An overall view of the original -i-3.0-m (-i-lO-ft) el breakwater condition is 

 shown in Photo 150 prior to model testing. Bathymetry was remolded to 1866 

 conditions and the 32-hr test series was conducted. Progression of sediment 

 movement is shown in Photos 151-154. After 5 hr of testing, a bar fomied 

 seaward of Camp Ellis Beach. This bar increased in size after 10 hr of testing, 

 and an additional bar fomied adjacent to the breakwater. These bar configura- 

 tions progressively increased in size, and after 22 hr of testing, they joined, 

 fomiing one large bar. Material moved over and through the breakwater. The 

 bar continued to grow and extended across the river mouth in a northerly 

 direction seaward of Camp Ellis Beach after the 32-hr test series was com- 

 pleted. Sediment movement at tJie river mouth and southern portion of the 

 beach (shown in Photos 155-158) indicated accretion occurring in this area 

 throughout the test series. The progression of sediment movement along the 

 northern portion of Camp Ellis Beach is shown in Photos 159-162. Accretion 

 of the shoreline occurred; however, tracer material continued movement to the 

 nortli out of the Camp Ellis Beach area throughout tlie test series. 



An overall view of the raised -i-4.6-m (-t-15-ft) el breakwater condition prior 

 to model testing is shown in Photo 163. Bathymetry was again remolded to 

 1866 conditions and subjected to the 32-hr test series. Progression of sediment 

 movement is shown in Photos 164-167. After 5 hr of testing, bars fomied at 

 the dogleg in the breakwater and seaward of Camp Ellis Beach. A spit also 

 fonned extending seaward from Camp Ellis Beach. The bars continued to 

 grow in size and. after 22 hr of testing, joined together. After 27 hr, a bar 

 extended to the shoreline along the northern portion of Camp Ellis Beach. 

 Sediment moved through the breakwater and fonned a bar adjacent to the 

 channel side of the structure, but did not extend across tlie river mouth as it 

 had done for the pre- and original breakwater conditions. The size of the spit 

 extending seaward from Camp Ellis Beach increased with time. Sediment 

 movement at the river mouth and along the southern portion of Camp Ellis 

 Beach is shown in Photos 168-171. The spit mentioned previously is shown in 

 more detail in these photos. The progression of sediment movement along the 

 northern portion of Camp Ellis Beach is shown in Photos 172-175 for the 

 raised breakwater. Accretion of the shoreline occurred, but tracer material 

 continued to move to the nortli out of tlie Camp Ellis Beach area throughout 

 the test series. 



30 



Chapter 4 Tests and Results 



