ANNAPOLIS, Md. — The Maryland Department of Natural Resources (DNR) will maintain its current oyster harvest regulations for the 2025-2026 season, following a near-tripling of the state’s oyster population over the past 20 years. The decision preserves daily bushel limits, weekly harvest days, and limited closures in the Chester River, strategies credited with driving the significant increase in oyster numbers. The Chesapeake Bay Foundation (CBF) supports the DNR’s approach but urges additional measures to address uneven recovery across the Bay.
The DNR’s regulations aim to balance commercial harvesting with ongoing restoration efforts, which have bolstered oyster populations in Maryland’s Chesapeake Bay tributaries. The state is on track to meet its goal of fully restoring oyster habitat in five tributaries by December 31, 2025. According to the DNR, consistent management practices, including controlled harvest limits and sanctuary protections, have been pivotal to this progress. The department emphasized that sustaining these efforts is essential to maintain the oyster population’s growth trajectory.
Allison Colden, Maryland Executive Director of the Chesapeake Bay Foundation, praised the DNR’s decision to retain existing regulations. “Our effort to bring oysters back from the brink in Chesapeake Bay is working, but continued recovery is not guaranteed. That’s why we support DNR’s decision to maintain its current harvest regulations for this season,” Colden said. She highlighted the success of restoration efforts, particularly in the Choptank River region, which hosts three targeted tributaries and boasts Maryland’s highest oyster abundance.
Despite the overall increase in oyster numbers, Colden noted challenges in specific areas. “The latest oyster stock assessment indicates that more than 80 percent of oyster harvest comes from only eight harvest areas, and that four of those have been subject to unsustainable harvest rates for four years or more. We urge DNR to consider a delayed or staggered opening of these areas to reduce the overall fishing effort contributing to high harvest rates,” she said. Colden also emphasized the role of oyster sanctuaries, which likely contribute significantly to statewide abundance, and called for expanding restoration efforts to other Maryland rivers post-2025.
Oysters are a cornerstone of the Chesapeake Bay’s ecosystem and economy, filtering water, providing habitat for marine life, and supporting the livelihoods of watermen. Decades of overharvesting, disease, and habitat loss had decimated populations, prompting Maryland to implement stringent management and restoration programs. The DNR’s current framework includes daily bushel limits to prevent overexploitation, restrictions on harvest days to allow recovery periods, and closures in areas like the Chester River to protect spawning grounds.
The Choptank River’s success underscores the value of targeted restoration. The region’s three tributaries—Harris Creek, Little Choptank River, and Tred Avon River—have benefited from extensive oyster reef construction and seeding programs. These efforts, supported by federal, state, and nonprofit partners, have created thriving habitats that enhance oyster reproduction and water quality. The DNR and CBF aim to replicate this model in other rivers, with plans to develop a long-term strategy beyond 2025.
Colden stressed the need for ongoing vigilance. “Oysters are a bedrock of our Chesapeake Bay ecosystem and economy. Protecting this vital resource, and reversing decades of overharvesting, disease impacts, and loss of habitat will require a long-term strategy and redoubled commitment. We commend DNR for staying the course and encourage further proactive management to protect Maryland’s oyster resource and those who depend on it,” she said.
The DNR’s decision aligns with findings from the latest oyster stock assessment, highlighting progress and vulnerabilities. While the statewide population has grown, the concentration of harvests in just eight areas raises concerns about localized depletion. Though not named in the DNR’s announcement, the four regions with unsustainable harvest rates are under scrutiny for potential adjustments, such as delayed openings to reduce pressure. The department has not yet indicated whether it will adopt CBF’s recommendations for staggered harvests.
Maryland’s oyster fishery operates under a regulated season, typically from October to March, with specific rules varying by region. Harvesters must adhere to bushel limits, which cap the daily take to prevent overfishing, and comply with weekly schedules restricting active harvesting days. The Chester River’s limited closures, for example, protect critical spawning areas while allowing controlled access. These measures, combined with restoration investments, have positioned Maryland as a leader in oyster recovery.
Looking ahead, the DNR plans to evaluate additional restoration sites and refine harvest management based on ongoing stock assessments. The state’s collaboration with organizations like CBF ensures that scientific data informs policy decisions. For more details on Maryland’s oyster management, visit the DNR website.
