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Aerial view of tidal creeks winding through salt marsh toward a barrier island at sunset

A National Estuary Program partnership · Est. 1996

Five bays. One watershed. Thirty years of science-led protection.

From Assawoman to Chincoteague, we monitor the water, restore the habitat and bring the community into the work — so Maryland's coastal bays are healthier for the people and wildlife that depend on them.

Coastal bays
5Coastal baysAssawoman to Chincoteague
Acres of water
71,000Acres of waterShallow lagoons behind a barrier island
Miles of shoreline
248Miles of shorelineMarshes, beaches and tidal creeks
Wetland acres
35,000Wetland acresNearly 35,000 acres of wetlands
Years of partnership
30Years of partnershipA National Estuary Program since 1996
Chincoteague watershed protected
32%Chincoteague watershed protectedPermanent conservation easements
Acres at Ilia Fehrer Preserve
437Acres at Ilia Fehrer PreserveHeadwaters of Trappe and Ayre's Creeks

Explore the bays

Each bay is a different place, with a different problem to solve

Select a bay on the map or from the list to see its watershed, health ranking and the work under way there.

Stylised map — north at the top, Atlantic Ocean to the east.

Largest of the five watersheds

Chincoteague Bay

The largest watershed, shared with Virginia

Chincoteague Bay watershed is the largest of the five watersheds. It includes land south of Langmaid Road to the Virginia border and into Virginia; half of the drainage area is in Accomack County, Virginia, including the town of Chincoteague. The watershed contains extensive marshes, farms and forest, with close to half of it forested. Ten of twelve wetlands of special state concern are here — sites of rare, threatened and endangered species — and the bay's importance to migrating waterfowl is noted internationally.

Ecosystem health ranking
2 of 5 — Second healthiest
Main tributaries
Paw Paw Creek, Tanhouse Creek, Swans Gut Creek

Impact right now

Restoration you can point at on a map

Living shorelines, reopened fish passage, rebuilt islands and protected headwaters — active and completed projects across the watershed.

  • Restored marsh grass behind a low stone sill along a bay shoreline
    CompletedCompleted

    Gum Point Road Living Shoreline

    Rip rap removed and replaced with a sill and restored marsh, enhancing habitat while reducing nutrient impact.

  • Waterbirds nesting on a low island in a shallow bay
    Ongoing2009–present

    Skimmer Island Rebuild

    A severely eroded bay island rebuilt with dredged sand to hold colonial waterbird nesting habitat.

Our strategic priorities

Four priorities guide every program we run

They come straight from the Comprehensive Conservation and Management Plan — the shared plan behind the partnership.

  • Priority 1

    Provide Healthy Waters

    Water quality is the single critical factor in protecting the Coastal Bays — measured, tracked and improved year after year.

    See the work

  • Priority 2

    Protect Fish, Wildlife & Habitat

    From horseshoe crabs to terns and terrapins, our surveys and habitat work keep the bays' species counted, understood and protected.

    See the work

  • Priority 4

    Develop Public Engagement & Partnerships

    Students, educators, volunteers, businesses and agencies working the same plan — because no single organization can restore a watershed.

    See the work

The data

We grade the bays every year, and publish the evidence

Long-term monitoring feeds the Coastal Bays Report Card and the deeper State of the Bays assessment. The 2021 report card ranks the ecosystem health of each bay against the others.

Ecosystem health ranking, 2021 report card

1 = healthiest of the five bays, 5 = most stressed.

Ecosystem health ranking of each Maryland coastal bay in the 2021 report card
BayRankWatershed
Sinepuxent Bay1Smallest of the five subwatersheds
Chincoteague Bay2Largest of the five watersheds
Isle of Wight Bay3Second largest of the five bays
Assawoman Bay4Drains parts of Worcester and Sussex counties
Newport Bay5Most stressed ranking in the 2021 report card

What's on

Get out on the water with us

Surveys, cleanups, paddles and public meetings across the watershed.

  • Meeting

    Implementation Committee Meeting

    Partners review progress against the Comprehensive Conservation and Management Plan. Open to the public.

    9:00 am – 11:00 am · Hybrid — Berlin and online

  • A grow-out cage of young oysters held over the water
    Education

    Oyster Gardener Orientation

    Everything a dock owner needs to raise a cage of oysters through the season and return them for planting.

    10:00 am – 12:00 pm · Ocean Pines

  • Horseshoe crabs on a bay beach at dusk
    Education

    Horseshoe Crab Survey Training

    Learn the spawning survey protocol before the May and June high-tide counts on index beaches.

    6:00 pm – 8:30 pm · Coastal Bays field office, Berlin

Stories & news

Field notes from the five bays

Get involved

There is a job here for whatever you have to give

An hour on a Saturday, a dock, a boat, a classroom or a company — every one of these makes measurable difference in the bays.

  • Individuals

    Become an oyster gardener

    Raise a cage of juvenile oysters from your dock and return them for planting on restoration reefs.

  • Individuals

    Join a horseshoe crab survey team

    Count spawning crabs on index beaches using the standard protocol, and right stranded animals.

  • Families

    Volunteer at a cleanup or crab pot round-up

    Remove debris and derelict gear from shorelines and the water — the easiest first way to help.

  • Individuals

    Help collect water quality data

    Support the monitoring network with sample collection and instrument readings on a set schedule.

Support the bays

Become a member of the Coastal Bays Foundation

Your contribution goes toward protecting the watershed, its habitat and its wildlife — monitoring crews on the water, marsh replanted at eroding shorelines, and students in the field. The Maryland Coastal Bays Program Foundation is a 501(c)(3) nonprofit; all donations are tax deductible.

Stay informed

Field notes from all five bays, once a month

Get updates on upcoming events, program news and our monthly newsletter — monitoring results, restoration progress and ways to take part.

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