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Title: Supplemental Environmental Assessment : Operations and Maintenance Dredging and Dredged Material Placement, Horseshoe Cove Federal Navigation Channel, Dixie County, Florida
Authors: United States. Army. Corps of Engineers. Jacksonville District
Keywords: Dredging
Dredging spoil
Dixie County (Fla.)
Publisher: United States. Army. Corps of Engineers. Jacksonville District.
Abstract: The US Army Corps of Engineers (USACE), Jacksonville District proposes to continue periodic dredging of the Horseshoe Cove Federal navigation channel and turning basin, any time of the year and on an “as-needed” basis, in order to maintain safe navigation in the channel. The Horseshoe Cove channel connects the town of Horseshoe Beach in Dixie County, Florida with the Gulf of Mexico. The channel is approximately 1.75-miles long and 75 feet wide with 3:1 side slopes on each side of the channel and a turning basin located at the northern end of the project adjacent to the shoreline. The proposed work consists of routine operations and maintenance (O&M) dredging of an estimated 120,000 cubic yards of silt and silty sand from the Federal channel and turning basin to obtain a project depth of 6-foot with 1 foot of allowable overdepth. Dredged material will be placed in the previously used upland site, which is provided by the project stakeholder, Dixie County. The upland site is approximately 30 acres and is located approximately 4,000 feet northeast of the dredging area (Figure 3). Maintenance dredging most recently occurred in 2008. The purpose of the project is to maintain safe and efficient vessel navigation through the channel. The need of the project is driven by the accumulation of sediment, commonly referred to as shoaling. The shoaling has restricted the width of the project channel and reduced its depths hindering safe and efficient vessel navigation. Periodic dredging is required to remove accumulated sediments and thus maintain the channel at its federally authorized depth. This Supplemental Environmental Assessment (EA) will evaluate the continued periodic O&M dredging of the Horseshoe Cove channel with upland placement of dredged material. The Supplemental EA will provide an update to previous analyses conducted under the National Environmental Policy Act (NEPA).
Description: Environmental Assessment
Rights: Approved for Public Release; Distribution is Unlimited
Appears in Collections:Environmental Documents

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