Project Information

Bid Title

Dupont Wappoo Watershed Improvements Plan

Issuing Agency

City of Charleston

Location

South Carolina

Published Date

Sep 15, 2026

Closing Date

Oct 9, 2026

Government Level

State & Local

Status

Closed

Original Source

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Bid Documents

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Project Description

Bid Title:	Dupont Wappoo Watershed Improvements Plan
Category:	Stormwater
Status:	Open

Description: The City of Charleston is seeking an engineering firm to provide professional engineering services for the Dupont Wappoo Watershed Improvements Project. The project aims to develop and evaluate flood mitigation improvements within the Dupont Wappoo drainage basin, which encompasses approximately 1,600-acres in the West Ashley area of the City of Charleston. The basin primarily relies on a central drainage channel to convey stormwater runoff to the Stono River; this channel is constrained by limited maintenance access, undersized conveyance and storage capacity, and tidally influenced tailwater conditions. Through this project, the City of Charleston, in coordination with the U.S. Army Corps of Engineers (USACE), is looking to evaluate improvements along this drainage channel and associated drainage infrastructure. The project design will be completed in two phases; this RFQ is for Phase One services only. Phase One services are intended to develop a conceptual preliminary engineering and planning package for transfer to USACE for use in future Phase Two services, which will include final design, permitting, and construction documents. The Consultant should have the ability to meet Small Business Enterprise (SBE) guidelines established by the City. The City will receive statements of qualifications until October 9, 2026 @ 2:00 pm. All related documents are available online at the City’s website www.charleston-sc.gov (Business > Bidline > Stormwater). All questions must be submitted in writing to Jordyn Mallett at For security reasons, you must enable JavaScript to view this E-mail address. . Publication Date/Time: 9/15/2026 3:25 PM Closing Date/Time: 10/9/2026 2:00 PM Contact Person: Jordyn Mallett mallettj@charleston-sc.gov 843-579-6419 Fee: N/A Business Hours: 8:30am-5:00pm Plan Holders List: N/A Related Documents: 1__Dupont Wappoo Drainage Basin Project Map 2_2019-12 DuPont Wappoo Master Plan Report - Final Deliverable 3_2026 SBE Forms _RFQ_DuWap_Preliminary Design Services

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Commodity Codes

• NAICS 237310Highway, Street, and Bridge Construction

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