Dibru-Saikhowa National Park: Assam’s Riverine Biodiversity Jewel

Dibru-Saikhowa National Park: Assam’s Riverine Biodiversity Jewel

Dibru-Saikhowa National Park, located in Dibrugarh and Tinsukia districts of eastern Assam, is a unique riverine protected area nestled between the Brahmaputra and Lohit rivers to the north and the Dibru River to the south. Covering a core national park area of approximately 340–350 sq km within a larger Biosphere Reserve of 765 sq km (including buffer zones), it features a dynamic mosaic of wetlands, grasslands, semi-evergreen forests, swamp forests, and canebrakes. This landscape, at an average elevation of 118 m, is the largest Salix swamp forest in Northeast India and supports exceptional biodiversity in a tropical monsoon climate with heavy rainfall (2,300–3,800 mm annually).

Key Historical Dates

The park’s protected status evolved over decades. It traces back to the Dibru Reserved Forest notified in 1890, with additions in 1920 and 1933, and the Saikhowa Reserved Forest declared in 1929. In 1986, the area was preliminarily notified as a Wildlife Sanctuary (finalized in 1995 for 340 sq km). It was designated a Biosphere Reserve in July 1997, and the core area was officially declared a National Park in 1999. Originally established to conserve the rare White-winged Wood Duck, it has since become a critical habitat for many endangered species.

Flora and Fauna

Dibru-Saikhowa’s vegetation includes moist mixed semi-evergreen and deciduous forests, with dominant trees like Bombax ceiba, Dillenia indica, Terminalia myriocarpa, and various grasses (Imperata cylindrica, Phragmites karka). Orchids and aquatic plants thrive in its wetlands.

The park is home to 36 mammal species, many protected under Schedule I of the Wildlife Protection Act. Iconic residents include Bengal tigers, Indian leopards, clouded leopards, Asian elephants, wild water buffalo, Hoolock gibbons, capped langurs, slow loris, and Chinese pangolins. A major attraction is the population of feral horses—descendants of army horses released after World War II. The waters support Ganges dolphins, while over 300 bird species make it a paradise for ornithologists. Highlights include the White-winged Wood Duck, Bengal Florican, Greater Adjutant Stork, Baer’s Pochard, and various eagles and hornbills. It also hosts diverse fish, reptiles, and amphibians.

Tourism and Experiences

Visitors explore via boat safaris along the rivers, which offer scenic views and wildlife sightings, especially during the dry season. The best time to visit is November to April (winter), ideal for migratory birds and comfortable weather, though the park can be accessed year-round with monsoon highlighting flood-adapted biodiversity. Activities include birdwatching, nature walks, and stays in eco-camps or houseboats. It lies about 12 km from Tinsukia town, with access from Dibrugarh or Tinsukia airports and railheads.

Conservation and Challenges

As a Biosphere Reserve, Dibru-Saikhowa balances conservation with sustainable development in its buffer zones. Threats include flooding, oil exploration pressures (with legal interventions, such as a 2020 Gauhati High Court stay), and human activities. Community involvement in ecotourism supports local livelihoods while protecting the ecosystem. The park plays a vital role in conserving globally threatened species and maintaining the Brahmaputra’s ecological integrity.

Dibru-Saikhowa stands out among Assam’s national parks for its unique island-like riverine setting and rich avian diversity. Whether spotting feral horses galloping through grasslands or glimpsing rare ducks in the swamps, it offers an immersive experience of Northeast India’s wild frontiers. Combining it with nearby cultural sites enhances a trip to this biodiverse region.