Lakeview Park model study. Lakeview Park is a recreational facility 

 located in Lorain, Ohio, along the southern shore of Lake Erie. A detached 

 breakwater system was constructed that consisted of three 76-m-long rubble- 

 mound segments, a 59-m-long rubble-mound extension of the east groin, an 

 increased crest height for the landward 15-m west groin, and a placement of 

 84,106 m 3 of beach fill. The detached breakwaters and groin modifications 

 were designed to protect the beach fill and shoreline. Following construction, 

 localized erosion of the beach fill on the eastern side of the west groin 

 occurred. The fill was replenished, but subsequently eroded to form a stable 

 beach that was narrower than desired as shown in the aerial photograph, 

 Figure 40. 



Fixed- and movable-bed physical models and tracer studies were conducted 

 as reported by Bottin (1982) to evaluate the degree of erosion for various 

 Lakeview Park improvement plans. Because of limited funds, testing of the 

 improvements was conducted using a portion of the previously described 

 Presque Isle 1:50 scale model. The Lakeview Park structures and immediate 

 underwater contours were installed on a section of the Presque Isle model. A 

 portion of the fixed-bed model was replaced with crushed coal to create a 

 movable bed depicting the Lakeview Park bathymetry contours, and still-water 

 levels were adjusted so that depths were comparable to Lakeview Park. 



Model tests were initially conducted for the as-constructed Lakeview Park 

 shoreline. Combinations of wave height, period, direction, and still-water 

 levels were studied to determine test conditions that produced a stabilized 

 shoreline similar to that observed in the prototype. Next, model tests were 

 conducted for several combinations of rubble-mound extensions of the west 

 groin and west breakwater. The results produced a recommendation for a 



Figure 40. Aerial view of Lakeview Park in Lorain, Ohio, showing typical condition of the 

 beach fill east of the west groin (Bottin 1 982) 



Chapter 3 Tools for Prediction of Morphologic Response 



71 



