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This supplement presents detailed descriptions, a revised cost estimate and updated benefits reflecting modifications to the channels, jetties, and weir system that had previously been approved in the General Design Memorandum. The proposed plan in this supplement provides for the construction of an upcoast and downcoast jetty, an upcoast and downcoast 650' weir section, two sand dikes, two deposition basins, an inner channel, and a 45 deg flared entrance channel. The proposed plan has the same general alignment as the GDM Plan, but incorporates some significant design improvements.
The purpose of this project is to provide safe navigation for existing and prospective vessel traffic by establishing and maintaining a safe navigation channel from the 12-foot contour in the open ocean to the village of Murrells Inlet, and constructing a turning basin and jetties. This final environmental impact statement presents the recommended plan of improvement consisting of the following: dredging an entrance channel, 300 feet wide and 10 feet deep through the offshore bar, a distance of approximately 3,000 feet; dredging an inner channel, 200 feet wide and 10 feet deep for a distance of 1,850 feet then, 90 feet wide and 8 feet deep to the major berthing area at old Army crash boat dock, a distance of 13,590 feet where it would terminate in a turning basin 300 feet long and 150 feet wide; dredging a deposition basin 18 feet deep adjacent to the weir section of the north jetty; constructing a north jetty 3,455 feet long with a low weir section for sand bypassing; constructing a south jetty 3,330 feet long; constructing a fishing walkway on top of the south jetty; and constructing sand dikes on both sides of the inlet to tie the jetties to the existing dune line. Additional keywords: Army Corps of Engineers; South Carolina.
The authorized plan for navigation improvement consists of the following: dredging an entrance channel, 300 feet wide and 12 feet deep through the offshore bar, a distance of approximately 3,300 feet; an inner channel, 90 feet wide and 10 feet deep from the entrance channel to the major berthing area at the old Army crash boat dock in the village of Murrells Inlet, a distance of 15,700 feet, where it would terminate with a turning basin; a 16-acre diked disposal area to accommodate shoal material found unsuitable for beach nourishment; a jetty on the north side of the inlet approximately 3,300 feet long, having a low weir section over which littoral materials pass en route to a deposition basin; a south jetty, approximately 2,300 feet long; and sand transition dikes connecting the jetty structures to the shore. The main recreational feature in the authorized project is an 8-foot wide fishing walkway to be constructed along the entire length of the south jetty. For public access, an existing road from Huntington Beach State Park would extend from the present parking area to the proposed south jetty. Public accomodations in the park would be readily available for fishermen using the walkway.