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Final Public Notice for FEMA Application for Lake Timicau Impoundment Connection Breach Project


Dewees Island Property Owners Association has applied for Federal Emergency Management Agency (FEMA) funding through the South Carolina Emergency Management Division (SCEMD) as an Applicant.

Under the National Environmental Policy Act (NEPA), federal actions must be reviewed and evaluated for feasible alternatives and for social, economic, historic, environmental, legal, and safety considerations. Under Executive Order (EO) 11988 and EO 11990, FEMA is required to consider alternatives to and to provide a public notice of any proposed actions in or affecting floodplains or wetlands. EO 12898 also requires FEMA to provide the opportunity for public participation in the planning process and to consider potential impacts to minority and low-income populations. This notice may also fulfill requirements under Section 106 of the National Historic Preservation Act (NHPA).

Funding for the proposed project will be conditional upon compliance with all applicable federal, tribal, state, and local laws, regulations, floodplain standards, permit requirements and conditions.

Applicant: Dewees Island Property Owners Association

Project Title: DR-4346-SC – Lake Timicau Impoundment Connection Breach

Location of Proposed Work: Dewees Island, Charleston County, South Carolina

Name of Structure: Lake Timicau Impoundments

Address of Structure:  Dewees Island, South Carolina – Site A: 32.833542, -79.716726; Site B: 32.84290, -79.709449; Site C: 32.846020, -79.704660. Project maps are shown below.

Facility Site Latitude Longitude Date of Construction
Dewees Island – Lake Timicau Impoundments A 32.833542  


Dewees Island – Lake Timicau Impoundments B 32.84290 -79.709449 N/A
Dewees Island – Lake Timicau Impoundments C 32.846020 -79.704660 N/A

Special Flood Hazard Area Zone: The completed project repaired the Lake Timicau Impoundments on Dewees Island. All sites are located within an AE zone, area of 1% annual chance flooding, per Charleston Flood Insurance Rate Map (FIRM) panel numbers # 45019C0553K and 45019C0554K dated 9/13/2019. Sites A and B are located outside the wetland and Site C is within the wetland. The work conforms to all applicable State of South Carolina and local floodplain regulations. The work complies with current codes and standards and may affect the local floodplain. The project has the potential to be affected by its location in AE Flood zone and wetlands.

Proposed Work and Purpose:

The Dewees Island Property Owners Association requested funds to repair the Lake Timicau Impoundments and to improve the impoundment at Site C by installing steel sheet metal piles to mitigate against future damage.

Project Alternatives: 

Alternative #1 (no action alternative): If no action is taken to repair the impoundments, then they will not operate as they have been designed and may leave property at risk.

Comment Period:

Comments are solicited from the public, local, state or federal agencies, and other interested parties in order to consider and evaluate the impacts of the proposed project. The comments should be made in writing and addressed to Dewees Island Property Owners Association. All comments are due within 15 days of this notice. Dewees Island Property Owners Association will forward comments to applicable regulatory agencies as needed.

Interested persons may submit comments, obtain more detailed information about the proposed action, or request a copy of the findings by contacting: U.S. Department of Homeland Security, Federal Emergency Management Agency – Region IV – EHP, 3003 Chamblee Tucker Rd – Office #255, Atlanta, GA 30341-4112 or by email at FEMA-R4EHP@fema.dhs.gov. Please include in the subject line of the email “DR-4346-SC EHAD.” Comments should be sent in writing at the above address within 15 days of the date of this notice.              

POSTED ON: August 27, 2020

Reference Images

Final Public Notice Images