The Madu Ganga Wetland

Covering 915 hectares in Balapitiya, Southern Sri Lanka, the Madu Ganga is a complex estuarine ecosystem where freshwater meets the sea, creating one of the most biodiverse wetlands in South Asia.

Ramsar Site No. 1372 • International Importance

Ramsar Wetland of International Importance

Designated as Ramsar Site No. 1372 in 2003, the Madu Ganga wetland meets multiple criteria for international importance, including its role as habitat for endangered species and its support of significant fish populations.

The wetland complex consists of 64 small islands covered with mangrove forests, creating a unique labyrinth of waterways that serves as a nursery for marine life and a critical stopover for migratory birds.

This recognition brings international attention to conservation needs and provides a framework for sustainable management that balances ecological protection with community livelihoods.


Mangrove Species

Including Rhizophora mucronata, Avicennia marina, and Bruguiera gymnorrhiza


Bird Species

111 Species

Incredible Biodiversity

The Madu Ganga ecosystem supports an extraordinary variety of life, from microscopic organisms to large mammals, creating one of Sri Lanka's most important biodiversity hotspots.

Endemic and migratory birds including Purple Heron, Little Cormorant, and Kingfishers


Fish Species


75+ Species

Marine and freshwater fish supporting local fishing communities


Reptiles & Amphibians


35+ Species

Including Water Monitor, various snake species, and endemic frogs

Ecosystem Services

The Madu Ganga provides essential services that benefit both local communities and the global environment.

Coastal Protection

Mangroves buffer against storms, tsunamis, and coastal erosion

Fisheries Support

Nursery grounds for commercially important fish species

Carbon Sequestration

Mangroves store 3-4 times more carbon than terrestrial forests

Water Filtration

Natural filtration improves water quality for communities

Conservation Challenges

The Madu Ganga faces multiple threats that require immediate and sustained conservation action to preserve this precious ecosystem.

Critical

Najas marina Invasion

This invasive aquatic plant blocks waterways, reduces oxygen levels, and disrupts the entire ecosystem balance.

Impact: Threatens navigation routes and fish breeding grounds

Our Solution: Research into bio-ethanol and organic fertilizer production

High

Pollution & Waste

Plastic waste, fertilizer run-off, and untreated sewage contaminate the pristine wetland waters.

Impact: Degrades water quality and harms marine life

Our Solution: Community education and waste management programs

Medium

Unsustainable Tourism

Unregulated boat traffic and visitor activities disturb wildlife and damage sensitive habitats.

Impact: Disrupts breeding cycles and erodes mangrove roots

Our Solution: Certified guide programs and visitor guidelines

High

Climate Change

Rising sea levels and changing rainfall patterns threaten the delicate balance of this estuarine ecosystem.

Impact: Saltwater intrusion and habitat loss

Our Solution: Mangrove restoration and adaptive management

Help Protect This Precious Ecosystem

The Madu Ganga's survival depends on immediate conservation action. Your support helps us address critical threats and preserve this wetland for future generations.