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Ashton Lagoon
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Ashton Lagoon on Union Island is the largest mangrove and lagoon system in the Grenadines, representing a landmark achievement in ecological restoration. The area was severely impacted in the 1990s by a failed marina development project that blocked tidal flow, causing widespread death of corals and mangroves. Since 2007, extensive restoration efforts led by Sustainable Grenadines Inc. (SusGren) have successfully reopened causeways to restore water circulation and biodiversity. Today, the lagoon flourishes once again as a critical habitat for migratory birds and a vital nursery for various fish species and sea turtles. Visitors can explore the area via a network of wooden boardwalks and interpretive trails that showcase the different types of mangroves and their role in coastal protection. The lagoon is designated as an Important Bird Area (IBA), attracting ornithologists and nature lovers from around the world. Beyond its biological value, Ashton Lagoon serves as a center for community-led environmental education and sustainable tourism. Its recovery is a powerful symbol of hope, showing how dedicated conservation can reverse decades of environmental damage.
- Location: St. Vincent & Grenadines
- Top sights: Ashton, Union Island · Union Island · Clifton, Union Island
- Nearby: Charlestown (14 km)
Best time to visit & climate
The most pleasant time to visit is Feb–Apr.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg °C | 27 | 26 | 27 | 27 | 28 | 28 | 28 | 28 | 29 | 28 | 28 | 27 |
| Rain mm | 44 | 22 | 28 | 29 | 59 | 99 | 114 | 123 | 114 | 142 | 131 | 72 |
📋 Practical info
Best season
The best time to explore Ashton Lagoon is during the dry season from January to May, when the water is clearer and mosquitoes are fewer. During this season you can also observe many migratory birds.
Best time of day
Early morning is good for a canoe or boat tour when the water is glassy and birds are most active. Late afternoon also features good light for photos and milder temperatures.
Etiquette
Move quietly and avoid sudden noises to avoid scaring birds and marine life. Do not litter the lagoon and avoid chemical sunscreens that may harm the sensitive ecosystem.
What to bring
Binoculars and a bird field guide are very useful to identify the species of the lagoon. Waterproof bags or dry containers protect your gear during boat trips.
Getting there
Ashton Lagoon is located on the south coast of St. Vincent, near Ashton Village. It is reachable by car, and local operators offer canoe and boat tours through the mangroves.
What to expect
Birdwatching in the mangroves requires patience, as many species hide in the dense foliage. Paddle slowly in your canoe and pause occasionally to enjoy the silence and detect movement.
Geography
Facts
- The largest mangrove forest and lagoon complex in the Grenadines.
- Damaged by a marina project in 1994 and restored starting in 2007.
- Designated as an Important Bird Area (IBA) by BirdLife International.
- Home to a 1.5-mile interpretive trail with wooden boardwalks.
- Acts as a natural nursery for lobster, conch, and various reef fish.
- Essential for protecting Union Island from storm surges and erosion.
Explore nearby
Notable places around
Route planner — Car & Motorhome
Where do you start? We build the route here, with stops and country notes along the way.
Vehicle
Only stops with (optional):
© OpenStreetMap contributors · OpenRouteService
Sights in the town Ashton Lagoon (3)
Sights nearby
Frequently asked questions
What is special about Ashton Lagoon?
Rich biodiversity and mangrove ecosystem.
Can you kayak there?
Yes, it is a great spot for kayaking.
Is there birdwatching?
Very many, bring binoculars.
Is the lagoon easily accessible?
Yes, from Union Island.
Is swimming recommended there?
Better to kayak; water is often shallow.
Ashton Lagoon: where is it located?
Ashton Lagoon is located in St. Vincent & Grenadines.
Ashton Lagoon: what is there to see?
Highlights include Ashton, Union Island, Union Island, Clifton, Union Island.
Ashton Lagoon: when is the best time to visit?
The most pleasant time to visit is Feb, Apr.
Ashton Lagoon: why is it worth visiting?
Ashton Lagoon on Union Island is the largest mangrove and lagoon system in the Grenadines, representing a landmark achievement in ecological restoration.
Nearby cities
Kingstown
Kingstown is the capital and chief port of Saint Vincent.
Calliaqua
Calliaqua is located on the southern coast of Saint Vincent.
🗺️
Byera Hill
Byera Hill is a settlement on the eastern coast of Saint Vincent.
Biabou
Biabou is a settlement on the eastern coast of Saint Vincent.
Barrouallie
Barrouallie is a coastal town on the western side of Saint Vincent.
Barrouallie Fisheries Complex
A significant coastal hub for the national fishing industry.
Derrick
Derrick is a small settlement in the south of Bequia island.
Port Elizabeth
Port Elizabeth is the main settlement on the island of Bequia.
Chateaubelair
Chateaubelair is the northernmost town on the leeward coast of Saint Vincent.
Dovers
Dovers is a small settlement on the exclusive island of Mustique.
Layou
Layou is situated north of Kingstown on the western coast.
Ashton
Ashton is the most populous village on Union Island.
Clifton
Clifton is the bustling main town of Union Island.
Charlestown
Charlestown is the main settlement on the island of Canouan.
History & landmarks
🗺️
Byahaut Bay
A secluded coastal area accessible only by water, featuring crystal-clear waters and vibrant coral reefs.
Kingstown Central Market
The largest trading hub for local farmers and vendors.
Victoria Park
This historic sports ground was named in 1887 in honor of Queen Victoria's Golden Jubilee.
House of Assembly
This historic building is where the parliament of Saint Vincent and the Grenadines meets.
The Carnegie Building
Opened in 1909, this building in Kingstown formerly housed the public library.
Nature
Union Island Gecko Reserve
This reserve protects the critically endangered Union Island Gecko, a tiny endemic reptile species.
Palm Island Bird Sanctuary
A private reserve on Palm Island serving as a haven for land and sea birds, as well as land tortoises.
Tobago Cays Marine Park
This marine protected area encompasses five uninhabited islands and is renowned for its coral reefs and sea turtles.
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Petit Canouan Wildlife Reserve
An uninhabited island designated as a strict wildlife reserve for nesting seabirds.
Mustique Turtle Sanctuary
A protected area on Mustique Island dedicated to the conservation and monitoring of sea turtles.
Layou River
A major river on the leeward side of the island that creates a large alluvial plain near the coast.
More places
Lowmans Bay Power Plant
The island's largest thermal power plant ensuring electricity supply.
Buccament Rock Art
The Buccament Rock Art site features petroglyphs carved into a cliff face.
Ottley Hall Shipyard
A specialized center for ship repair and maritime maintenance.
Layou Petroglyphs
The Layou Petroglyphs consist of ancient rock carvings created by pre-Columbian inhabitants.
Kingstown Deep Water Harbour
The primary maritime gateway for Saint Vincent, handling container ships and cargo.
Camden Park Industrial Estate
An industrial zone for manufacturing and warehousing west of the capital.
Layou Petroglyph
These pre-Columbian rock carvings likely date back to the Carib people.
Fort Duvernette
Fort Duvernette is a defensive fortification built around 1800 on a massive volcanic rock.