Estuary Name	Location	Country	Habitat Type	Notable Species	Threats	Conservation Status
Amazon River Estuary	Amazon River	Brazil	Tidal Wetland	Pink River Dolphin	Pollution	Endangered
Chesapeake Bay	Maryland/Virginia	USA	Brackish Water	Blue Crab	Overfishing	Restoration Efforts
San Francisco Bay	California	USA	Estuarine Marshes	California Clapper Rail	Urban Development	Protected Area
Gulf of California	Baja California Sur	Mexico	Coral Reefs	Sea Turtles	Pollution	UNESCO World Heritage Site
Rio de la Plata	Argentina/Uruguay	Argentina/Uruguay	Mixed Estuarine	Platypus	Habitat Loss	Conservation Programs
Thames Estuary	London	UK	Salt Marsh	Biodiversity Hotspot	Urban Pollution	Protected Status
Puget Sound	Washington	USA	Marine Estuary	Orca Whale	Shipping Traffic	Marine Reserve
Sundarbans	West Bengal/Bangladesh	India/Bangladesh	Mangrove Forest	Bengal Tiger	Climate Change	World Heritage Site
Laptev Sea Estuary	Siberia	Russia	Cold Water Estuary	Walrus	Climate Change	Conservation Status Pending
Seine Estuary	Normandy	France	Coastal Wetland	European Eel	Agricultural Runoff	Protected Area
Yangtze River Delta	Shanghai	China	Brackish Marsh	Finless Porpoise	Industrialization	Biodiversity Support
Humboldt Bay	California	USA	Freshwater Estuary	Marsh Bird Species	Pollution	Restoration Projects
Mekong Delta	Vietnam	Vietnam	Wetland	Irrawaddy Dolphin	Wetland Drainage	Natural Reserves
Ria de Arousa	Galicia	Spain	Brackish Estuary	Shellfish	Overexploitation	Marine Protected Area
Barataria Bay	Louisiana	USA	Salt Marsh	Brown Pelican	Oil Spills	Conservation Efforts
Vistula Lagoon	Poland/Russia	Poland/Russia	Coastal Lagoon	Teal Species	Invasive Species	Conservation Programs
Fraser River Delta	British Columbia	Canada	Estuarine Deltas	Salmon	Urban Development	Wildlife Reserve
Walvis Bay	Namibia	Namibia	Lagoon	Flamingos	Industrial Pollution	Ramsar Site
Wash Estuary	Norfolk	UK	Salt Marsh	Avocets	Climate Change	Biodiversity Action Plan
Buffalo River	New York	USA	Freshwater Estuary	Fish Species	Pollution	Water Quality Improvement
Galveston Bay	Texas	USA	Coastal Estuary	Oysters	Hurricanes	Estuary Program
Moreton Bay	Queensland	Australia	Marine Estuary	Dugongs	Coastal Development	National Park
Cananéia Estuary	São Paulo	Brazil	Mangrove Areas	Manatee	Habitat Modification	Conservation Status
Po Delta	Emilia-Romagna	Italy	Brackish Wetland	Bird Species	Agricultural Practices	UNESCO Biosphere Reserve
Ria Formosa	Algarve	Portugal	Coastal Lagoon	Flamingo	Urbanization	Natural Park
Gold Coast Seaway	Queensland	Australia	Estuarine System	Sharks	Urban Development	Marine Park
Coastal Lagoons of Brazil	Various	Brazil	Lagoonal Systems	Fishes	Pollution	Biodiversity Concern
San Diego Bay	California	USA	Organized Estuary	Bird Species	Urban Pollution	Critical Habitat
Paraná River Estuary	Argentina	Argentina	Freshwater Estuary	Migratory Fish	Dams	Biodiversity Hotspot
Patuxent River Estuary	Maryland	USA	Brackish Estuary	Crane Species	Runoff Pollution	Management Planning
Delaware Bay	New Jersey	USA	Saltwater Estuary	Horseshoe Crabs	Rising Sea Levels	Conservation Programs
Ythan Estuary	Scotland	UK	Salt Marsh	Diverse Waterfowl	Pollution	Conservation Designated Area
Cape Cod Bay	Massachusetts	USA	Marine Estuary	Bottlenose Dolphin	Climate Change	Marine Conservation
Vancouver Estuary	British Columbia	Canada	Coastal Estuary	Bald Eagles	Urban Development	Protection Efforts
Whangarei Harbour	Northland	New Zealand	Tidal Estuary	Kiwi	Pollution	Environmental Management
Darwin Harbour	Northern Territory	Australia	Saltwater Estuary	Mudskippers	Development	Marine Protection
Flinders Estuary	Tasmania	Australia	Narrow Channel	Sea Turtles	Loss of Habitat	Environmental Protection
Baltic Sea Estuary	Baltic	Various	Brackish Sea	Seals	Pollution	Environmental Protection Initiatives
Bay of Islands	Northland	New Zealand	Coastal Bay	Kea	Commercial Fishing	Protected Marine Area
Peconic Estuary	New York	USA	Coastal Wetland	Shellfish	Overfishing	Water Quality Monitoring
Zhangjiang River Estuary	Shanghai	China	Brackish Estuary	Fish Species	Pollution	Ecosystem Restoration
Tidewater Region	Virginia	USA	Estuarine Region	Waterfowl	Sea Level Rise	Conservation Programs
Gulf of Bothnia	Northern Baltic Sea	Finland/Sweden	Estuarine Region	Biodiversity Hotspot	Shipping Pollution	Management Plans
Coiba Island	Panama	Pacific Ocean	Marine Estuary	Hammerhead Shark	Illegal Fishing	Marine Protected Area
Raritan Bay	New Jersey	USA	Estuarine Marshes	Bluefish	Industrialization	Conservation Planning
Limpopo River Estuary	Mozambique	Mozambique	Wetland	Diverse Fish Species	Agricultural Pollution	Conservation Efforts
Lake Okeechobee	Florida	USA	Freshwater Estuary	Alligator	Water Management	Ecosystem Restoration
Tangier Sound	Maryland	USA	Brackish Waters	Crabs and Oysters	Pollution	Critical Habitat Area
Coastal wetlands of Louisiana	Louisiana	USA	Wetland System	Gators and Crabs	Wetland Loss	Restoration Projects
Ria de Vigo	Galicia	Spain	Estuary	Mussels	Pollution	Protected Area
Kinabatangan River Estuary	Sabah	Malaysia	Wetland	Proboscis Monkey	Deforestation	Protection Efforts
Savannah River Estuary	Georgia/South Carolina	USA	Tidal Estuary	Egrets	Industrial Discharge	Conservation Strategies
Knik Arm Estuary	Alaska	USA	Glacial Estuary	Beluga Whales	Oil Exploration	Protected Marine Area
Bristol Bay	Alaska	USA	Estuarine Area	Sockeye Salmon	Mining Activities	Management Plans
Apple River Estuary	New Jersey	USA	Brackish Estuary	Bird Species	Agricultural Runoff	Conservation Planning
Shark River Estuary	New Jersey	USA	Saltwater Estuary	Sharks	Pollution	Marine Conservation
Willapa Bay	Washington	USA	Mixed Estuary	Clams	Marsh Loss	Biodiversity Project
Potomac River Estuary	Maryland/Virginia	USA	Tidal Estuary	Bald Eagles	Industrialization	Restoration Programs
Hilsea Lines Estuary	Portsmouth	UK	Tidal Marsh	Oystercatchers	Urban Development	Management Strategy
Hudson River Estuary	New York	USA	Brackish Estuary	Diadromous Fish Species	Pollution	River Renaissance
Neuse River Estuary	North Carolina	USA	Mixed Wetland	Brook Trout	Urbanization	Conservation Plans
Guadiana River Estuary	Spain/Portugal	Spain/Portugal	Mixed River Estuary	Lifesaver Fish	Overfishing	Water Management
North Inlet Estuary	South Carolina	USA	Brackish Marsh	American Oystercatcher	Climate Change	Protected Reserve
Bay of Fundy	New Brunswick/Nova Scotia	Canada	Bar-built Estuary	Humpback Whale	Sea Level Rise	Conservation Areas
Chao Phraya River Estuary	Bangkok	Thailand	Brackish Estuary	Asian Fish Species	Reclamation Projects	Watershed Management
Red River Delta	Vietnam	Vietnam	Wetland Area	Marine Species	Pollution	Biodiversity Conservation
Deleware River Estuary	New Jersey/Pennsylvania	USA	Freshwater Estuary	Barred Owl	Industry Runoff	Management Plans
Waiakea Estuary	Hawaii	USA	Coastal Wetlands	Nene Goose	Development Pressure	Conservation Areas
Kilchoman Estuary	Scotland	UK	Machair Habitat	Barnacle Geese	Sea Level Rise	Protected Area
Isle of Skye Estuary	Scotland	UK	Marine Estuary	Red Deer	Agricultural Runoff	Conservation Status
Port Phillip Bay	Victoria	Australia	Estuarine Bay	Seals	Urban Development	Management Plans
Mar Menor	Murcia	Spain	Lagoon	Dolphins	Agricultural Pollution	Biodiversity Protection
Severn Estuary	Wales/England	UK	Tidal Estuary	Salmon Species	Hydroelectric Projects	Conservation Plan
Petaluma River Estuary	California	USA	Brackish Marsh	Wildlife Species	Agricultural Pollution	Protection Programs
Lake Michigan Estuary	Michigan	USA	Mixed Estuarine	Diverse Fish Species	Development Pressure	Conservation Efforts
Merced River Estuary	California	USA	Brackish Wetland	Migratory Birds	Pollution	Restoration Efforts
Finger Lakes Estuary	New York	USA	Freshwater Estuary	Salmon Species	Industrial Runoff	Environmental Planning
Willamette River Estuary	Oregon	USA	Tidal River	Pacific Salmon	Urbanization	Conservation Initiatives
Prince William Sound	Alaska	USA	Marine Estuary	Sea Otters	Pollution	Conservation Programs
Kitimat Estuary	British Columbia	Canada	Coastal Estuary	Salmon	Industrial Development	Protection Status
Neva River Estuary	St. Petersburg	Russia	Delta Estuary	Porpoise	Industrial Pollution	Biodiversity Protection
Boisé Estuary	New Brunswick	Canada	Lagoon	Waterfowl Species	Deforestation	Conservation Strategies
Bosque del Apache Estuary	New Mexico	USA	Wetlands	Sandhill Cranes	Water Management	Wildlife Refuge
Wisconsin Estuary	Wisconsin	USA	Freshwater Estuary	Endangered Fish	Pollution	Conservation Planning
Madeira River Estuary	Brazil	Brazil	Freshwater Estuary	Diverse Species	Deforestation	Conservation Status
Lake Cuitzeo Estuary	Michoacán	Mexico	Brackish Water	Diverse Fish	Pollution	Environmental Monitoring
Swan River Estuary	Western Australia	Australia	Tidal River	Diverse Marine Life	Urbanization	Marine Protected Areas
James River Estuary	Virginia	USA	Tidal Marsh	Bald Eagle	Pollution	Conservation Efforts
Tahoe Estuary	California/Nevada	USA	Cold Water Estuary	Trout Species	Pollution	Water Quality Programs
Mississippi River Estuary	Louisiana	USA	Freshwater Estuary	Hibernating Turtles	Oil Spill	Restoration Projects
Tasman Bay	Tasman	New Zealand	Muddy Estuary	Herbivorous Fish	Marine Debris	Biodiversity Plan
Ganges River Estuary	India/Bangladesh	India/Bangladesh	Wetland Habitat	Freshwater Dolphin	Industry Pollution	Conservation Program
Portsmouth Harbor	New Hampshire	USA	Brackish Marsh	Herring	Marine Traffic	Conservation Plans
Sitzka River Estuary	Montana	USA	Coastal Wetland	Endangered Birds	Irrigation Runoff	Conservation Programs
Patagonian Estuary	Argentina	Argentina	Estuarine Habitat	Rich Biodiversity	Climate Change	Conservation Area
Gulf of Mannar	Tamil Nadu	India	Coral Lagoon	Diverse Fish Species	Overfishing	Marine Protection
Salton Sea Estuary	California	USA	Saline Lake	Bird Species	Pollution	Environmental Management
Trinity River Estuary	Texas	USA	Estuarine System	Heron Species	Climate Change	Protection Initiatives
Squamish Estuary	British Columbia	Canada	Tidal Flat	Diverse Wildlife	Development Pressure	Wetland Restoration
Fort Loudoun Estuary	Tennessee	USA	Reservoir Estuary	Recreational Fish	Pollution	Environmental Programs
Raccoon River Estuary	Iowa	USA	Freshwater Area	Migratory Birds	Agricultural Runoff	Conservation Projects
Pancake Bay	Ontario	Canada	Tidal Estuary	Historical Fish Species	Invasive Species	Protected Area
Cooush Estuary	Maine	USA	Coastal Wetland	Egrets	Development Pressures	Conservation Strategies
Fowey Estuary	Cornwall	UK	Salt Marsh	Osprey	Flood Risks	Management Plans
Halifax Harbour	Nova Scotia	Canada	Tidal Estuary	Harbor Porpoise	Pollution	Protected Status
Cagayan de Oro Estuary	Mindanao	Philippines	Mixed Rivers	Diverse Species	Urban Development	Biodiversity Actions
Long Island Sound	New York/Connecticut	USA	Estuarial System	Oystercatchers	Pollution	Marine Programs
MacKenzie River Estuary	Northern Territories	Canada	River Delta	Caribou and Geese	Oil Exploration	Conservation Areas
Strachan River Estuary	Western Australia	Australia	Brackish River	Diverse Marine Life	Runoff Pollution	Marine Management
Sitakunda Estuary	Bangladesh	Bangladesh	Mangrove Forest	Diverse Fish	Rodent Population	Biodiversity Protection
Los Angeles River Estuary	California	USA	Tidal Freshwater	Mammals and Fish	Urban Pollution	Restoration Efforts
Patos Lagoon	Brazil	Brazil	Freshwater Lagoon	Bird Species	Agricultural Pollution	Conservation Programs
Narmada River Estuary	Madhya Pradesh	India	Brackish Estuary	Endangered Fish Species	Dams Impact	Conservation Area
Yangtze Estuary	Shanghai	China	Delta Estuary	Chinese Alligator	Pollution and Development	Reserve Program
Churchill River Estuary	Manitoba	Canada	Estuarine Region	Polar Bears	Climate Change	Environmental Programs
Tasmania South West Estuary	Tasmania	Australia	Wetland	Western Gray Kangaroo	Urban Impact	Protection Plan
Bass Strait Estuary	Victoria/Tasmania	Australia	Marine Estuary	Seabirds	Commercial Fishing	Biodiversity Plans
Del Mar Beach Estuary	California	USA	Wetland Coasts	Egrets	Pollution	Marine Habitats
Sabine-Neches Estuary	Texas	USA	Mixed Estuary	Migratory Birds	Oil Spills	Conservation Plans
Columbia Estuary	Oregon/Washington	USA	Freshwater Estuary	Anadromous Fish	Commercial Traffic	Protection Plans
Phang Nga Bay	Thailand	Thailand	Marine Estuary	Diverse Marine Life	Tourism Pressure	Environmental Management
Beaufort Sea Estuary	Alaska	USA	Cold Water Estuary	Seals	Climate Change	Protection Areas
Orewa Estuary	Auckland	New Zealand	Tidal Flat	Diverse Fish Species	Urban Development	Management Actions
Gulf of Taranto	Italy	Italy	Mixed Estuary	Marine Species	Pollution	Environmental Action Plan
Baram River Estuary	Malaysia	Malaysia	Mangrove Habitat	Diverse Marine Life	Deforestation	Protection Status
Wanganui River Estuary	New Zealand	New Zealand	Estuary	Whales	Coastal Development	Biodiversity Project
Avon River Estuary	Victoria	Australia	Mixed Wetland	Quoll Species	Climate Change	Conservation Programs
Haithabu Estuary	Schleswig-Holstein	Germany	Brackish Waters	Shad Species	Pollution	Protected Area
Rio Grande Estuary	Texas	USA	Mixed Waters	Herons	Pollution and Deforestation	Conservation Strategies
State Island Estuary	New Jersey	USA	Rivermouth	Fish Species	Reclaimed Development	Protection Plans
Appomattox River Estuary	Virginia	USA	Tidal Marsh	Diverse Bird Species	Industrial Waste	Conservation Planning