Charleston officials, city employees, contractors and community members gathered Monday to celebrate the completion of the Spring-Fishburne Drainage Project, a nearly $200 million effort that reshaped how stormwater moves beneath the peninsula. At the center of the celebration stood the city's new William Dudley Gregorie Pump Station, the final piece of a drainage network that took roughly 30 years to bring to life.
The project's price tag landed close to $200 million, according to city stormwater employee Steve Kirk, who worked on what's often called the west side project for about 20 years, as reported by the Post and Courier. A separate Post and Courier report had previously pegged the project at $198 million. Kirk reflected on the workers who spent years underground and out of the public eye, saying, “Today is dedicated to those people, the ones who have labored out of the public eye, without praise, without fanfare, and expecting none, simply doing the best job they can for the sake of doing top-quality work.”
The project traces back to funding secured in 1999, though construction didn't officially break ground until 2011, according to Live 5 News. The Post and Courier's reporting frames it differently, noting the project was conceived during Mayor Joe Riley's tenure and carried through two more administrations before reaching completion this week.
What's Buried Beneath the Peninsula
The finished system includes 18,000 linear feet of new pipe, nine drilled drop shafts reaching 100 to 130 feet below ground, and roughly 500 new drainage structures, per the seed reporting. Each drop shaft contains a specially engineered vortex box designed to control the speed and force of water as it plunges underground. An earlier Post and Courier commentary described a related but differently scoped tally for the system — 18,000 linear feet of pipe, a mile and a half of tunnels, eight drop shafts and more than 500 drainage structures — while a city event announcement cited more than 9,000 feet of deep tunnels and more than 18,000 feet of stormwater pipe, according to Holy City Sinner. The counts vary depending on which phase or structure type each source is measuring.
A mile-long tunnel connects the series of shafts, carrying thousands of gallons of water per minute toward the Gregorie Pump Station. That station itself runs on three 950-horsepower diesel engines driving pumps that stand 40 feet tall, capable of moving up to 360,000 gallons of water per minute during storms or high tides, pushing it out into the Ashley River. The city's announcement framed that same 360,000-gallon figure as effective even during king tides. Altogether, the system is designed to drain roughly 500 acres, about 20 percent of the peninsula.
A Basin Built on a Former Creek
The Spring-Fishburne basin sits in a former marsh and is prone to flooding. Moderate-to-heavy rain near high tide can make the Crosstown impassable and cut off access. Mayor William Cogswell has spoken about flood risks and the need to stay off roads.
The Veterans Affairs Hospital and the Medical University of South Carolina are among the hospitals and medical centers in the Medical District.
Before the pump station came online, the system's gravity-powered portion was already doing some of the work. It became partially operable in August, running on gravity alone, the Post and Courier reported. Live 5 News reported in 2023 that the gravity system was functional and that areas east of Hagood Avenue were draining water two to five times faster than before at low tide. City officials said the gravity system has been helping reduce flooding since 2022, per Live 5 News.
Delays, Setbacks and Cost Overruns
The project faced hiring problems, long-lost graves, toxic gases and tropical storms along the way. Jaydee Contractors worked on the tunnels and shafts phase.
It also ran over budget and behind schedule. A 2022 Post and Courier investigation found the project was around $44 million over budget and about 10 years behind its original timeline, compounded by pandemic-era supply chain problems, cost overruns and labor shortages.
City officials assembled funding for the project from state, federal and city sources. The finished network is now counted among Charleston's most expensive and intensive flood-mitigation efforts to date.
What Comes Next for Peninsula Flooding
Charleston County's transportation sales tax referendum passed in the Nov. 3 election, and the city expects to receive $225 million from it for the Battery Extension, a proposed sea wall designed to wrap around the peninsula. The same sales tax is set to provide funds addressing flooding along Hagood Avenue.
The pump station was named for Charleston City Council member William Dudley Gregorie, and former council member Carol Jackson greeted him at the opening.
