Beach Erosion and Sediment Processes Study, North East Marina, Erie County, Pennsylvania
ENGINEER RESEARCH AND DEVELOPMENT CENTER VICKSBURG MS COASTAL AND HYDRAULICSLAB
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North East Marina is a recreational boating facility on the shore of Lake Erie in the northwestern corner of Pennsylvania. Since construction in 1991, artificial bypassing has been conducted to maintain the movement of sediment along the coast from west to east, but downdrift homeowners complained that their beaches had eroded excessively. The purpose of this study was to identify and investigate alterative solutions to the beach erosion problem in the vicinity of the marina. Based on cross-shore profile surveys, since November of 1993, the Pennsylvania Fish and Boat Commission has bypassed an annual average of 16,700 yd3 of sediment The total amount of littoral material bypassed from 1991 to 2001 has been about 105,000 yd3. This volume approximately equals the natural drift along this shore. The width of the dry beach is largely a function of lake water level. At this time, continued bypassing is the optimum solution, and no structural solutions are recommended. Hydraulic bypassing is not practical here because of gravel and freezing conditions. Mechanical bypassing will have to be continued indefinitely, and annual volumes will have to be adjusted based on sediment accumulates on the updrift fillet.
- Physical and Dynamic Oceanography
- Civil Engineering