World’s largest oyster restoration completed on Piankatank River
Two more Virginia rivers meet Chesapeake Bay oyster restoration goals
Granite rock is placed in the Piankatank River to create oyster reef. (Patrick Bloodgood/ U.S. Army Corps of Engineers)
‘Tis the season for champagne and oysters — and nowhere is more flush with the beloved bivalve than Virginia’s Piankatank River.
With more than 438 acres of restored oyster reef, the Piankatank is home to what Nature Conservancy Virginia Chesapeake Bay Program Director Andy Lacatell says is “the largest completed oyster restoration project on the planet.”
On Tuesday, Gov. Ralph Northam marked the state’s achievement of oyster restoration goals in both the Piankatank and Great Wicomico rivers as part of its broader effort to meet the commitments of the 2014 Chesapeake Bay Watershed Agreement.
“We’re recognizing that natural resources are infrastructure and they need to be taken care of just like we would roads or buildings,” said Northam.
Oysters have proved a popular rallying point in efforts to clean up the Chesapeake Bay, the nation’s largest estuary.
“Water quality and fish is really what it boils down to,” said Lacatell. “Oysters improve water quality, and they provide habitat for fish and crabs and other critters that are both recreationally and commercially important.”
Given the species’ importance, the 2014 Chesapeake Bay Watershed Agreement, signed by six watershed states, Washington, D.C., the U.S. Environmental Protection Agency and the Chesapeake Bay Commission, called for the restoration of native oyster habitat and populations in 10 bay tributaries by 2025.
Of those, Virginia and Maryland each assumed responsibility for restoring half of the tributaries, with Virginia targeting the Great Wicomico, Piankatank, lower York, Lafayette and Lynnhaven rivers. Northam voluntarily added the Eastern Branch of the Elizabeth River to Virginia’s list last year, while the General Assembly approved the governor’s proposal to devote $10 million in capital spending under the state’s biennial budget to reef construction.
To date, four of the commonwealth’s six targeted tributaries have met their oyster restoration goals. Jackie Shannon, the Virginia oyster restoration manager for the Chesapeake Bay Foundation, said that permits and funding have been secured for the remaining two tributaries — the lower York and Lynnhaven — and that she expects work to be completed in time for the bay cleanup’s 2025 deadline.
The Piankatank, which a century and a half ago supported some 7,000 acres of oyster reef, is a particularly favorable environment for oysters. Known as a “trap estuary,” the river has a unique water circulation pattern that keeps nutrients and oyster larvae within the area where they are deposited, rather than sweeping them out into the bay. Furthermore, the channel sees less commercial oystering than many other Virginia rivers.
“There isn’t really any open public harvest areas in the Piankatank, which makes it sort of an ideal area for this large-scale restoration,” said Andrew Button, head of the Virginia Marine Resources Commission’s Conservation and Replenishment Department.
But while oysters were once abundant in the Piankatank, as in Virginia’s other rivers draining into the Chesapeake Bay, populations by the 1960s had been decimated by overharvesting, pollution and disease.
“At that point, really most of the public fishery was closed almost everywhere in the state,” said Button. The Piankatank was the site of some of VMRC’s earliest restoration efforts, which maintained the river as a seed area. Even today, Piankatank oysters continue to be transported to public and private grounds elsewhere in the commonwealth.
Over the years, restoration work by not only VMRC, but also the Virginia Institute of Marine Science, Virginia Commonwealth University, U.S. Army Corps of Engineers, Chesapeake Bay Foundation, Nature Conservancy and others has built up an elaborate network of reefs throughout the river that range widely in extent, height and design.
More than a quarter of that infrastructure has been constructed by VMRC, which the governor’s office said set a record for the most oyster reef acres restored in a single year: 100 acres in 2021 alone. The corps is expected to add 50 acres in 2022.
Taken together, the oyster populations supported by the new reef acreage “have demonstrated the feasibility” of the state’s restoration efforts, said Shannon.
“2025 is around the corner,” she added. “This formula has seemed to work very well.”
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