Chitwan National Park

The lowland Terai forests and grasslands of the Chitwan valley were, for much of the 19th and early 20th centuries, a private big-game hunting reserve for Nepal's ruling Rana and Shah elites and their guests, who pursued tigers, rhinos and other large mammals. The dense forest and endemic malaria long limited permanent settlement, leaving the area an unusually intact slice of the Inner Terai. From the 1950s, malaria-eradication campaigns opened the valley to large-scale resettlement and agricultural clearing; by the end of the 1960s much of Chitwan's jungle had been cleared and wildlife — especially the greater one-horned rhinoceros — had collapsed under poaching and habitat loss.

In response, a rhino sanctuary was created in the valley and, in 1973, the government formally established Royal Chitwan National Park — the first national park in Nepal. The park was gazetted with delineated boundaries in the early 1970s and the Nepal Army was deployed to enforce protection. The honorific 'Royal' was dropped following the abolition of the monarchy, and the protected area is now known simply as Chitwan National Park.

Recognising its global ecological importance, UNESCO inscribed Chitwan on the World Heritage List in 1984 (Reference No. 284) under natural criteria (vii), (ix) and (x). It was Nepal's first natural World Heritage property and is frequently cited by UNESCO and the IUCN as one of Asia's notable success stories in biodiversity conservation. The establishment of the park was not without serious human cost: villages, many inhabited by the indigenous Tharu people, were relocated from inside the new park boundaries, a legacy that continues to shape debates over conservation and community rights in the region.

Chitwan National Park covers 952.63 km² (367.81 sq mi) in the central Terai of southern Nepal, spanning parts of Chitwan, Nawalpur, Makwanpur and Parsa districts. It lies in the Inner Terai lowlands at the foot of the Himalayan foothills, with elevations ranging from roughly 100 metres in the river floodplains to about 815 metres along the crests of the Churia (Sivalik) Hills that form much of its southern boundary. The park is drained by the Narayani (Gandaki), Rapti and Reu river systems, whose seasonal floods continually reshape oxbow lakes, sandbars and riverine habitats.

The park preserves one of the last large, undisturbed remnants of the Terai ecosystem that once stretched continuously across the Indo-Nepalese foothills. Subtropical moist deciduous sal (Shorea robusta) forest dominates the landscape, covering roughly 70 percent of the area, while tall alluvial floodplain grasslands — including the famous 'elephant grass' (Saccharum) — make up around 20 percent and provide critical habitat and forage for large herbivores. The remainder comprises riverine forest of khair, sissoo and simal along the watercourses. The climate is humid subtropical and monsoon-driven, with annual rainfall of about 2,500 mm concentrated in the mid-June to late-September monsoon, sustaining the exceptionally productive grassland-forest mosaic.

This habitat diversity supports remarkable biological richness. The park records on the order of 68 mammal species and well over 500 bird species, making it one of the most important birding sites in Asia, alongside numerous reptiles, amphibians and fish. Beyond its flagship rhino and tiger, Chitwan shelters gaur, sloth bear (which reach among their highest recorded densities here), leopard, sambar and spotted deer, wild boar, gangetic dolphin in the Narayani, and both mugger crocodile and the critically endangered gharial — the latter the focus of a dedicated captive-breeding and release programme after wild numbers crashed to only a few dozen individuals.

Chitwan's World Heritage status rests on three of UNESCO's natural criteria. Under criterion (vii), the park is recognised for containing superlative natural phenomena and areas of exceptional natural beauty — a dramatic landscape of forested Churia hills, braided rivers, oxbow lakes and sweeping floodplain grasslands. Under criterion (ix), it represents an outstanding example of significant ongoing ecological and biological processes: the dynamic river systems, flooding regimes and grassland-forest succession that maintain one of the last undisturbed examples of the Terai ecosystem.

Under criterion (x), Chitwan contains the most important and significant natural habitats for in-situ conservation of biological diversity, including threatened species of outstanding universal value. The park is a global stronghold for the greater one-horned (Asian) rhinoceros and one of the few remaining refuges for the Bengal tiger, alongside a suite of other endangered species such as the gharial, gangetic dolphin and several rare birds.

The park's significance extends beyond Nepal's borders. It forms the core of a transboundary conservation complex linking to India's Valmiki Tiger Reserve, and it anchors the Terai Arc Landscape, a large-scale corridor initiative aimed at maintaining genetic connectivity for tigers, rhinos and elephants across the Indo-Nepalese lowlands. Chitwan today holds one of the world's largest populations of greater one-horned rhinos, underscoring its irreplaceable role in the survival of the species.

Conservation in Chitwan has hinged on sustained, military-backed protection. The Nepal Army has guarded the park since its creation, operating a network of security posts and patrols that, together with park rangers and Community-Based Anti-Poaching Units (CBAPUs), has driven poaching to historically low levels. Nepal achieved its first full 'zero-poaching year' for rhinos — 365 days without a single rhino lost to poachers — in 2011, and repeated the feat in several subsequent years, an internationally celebrated record largely centred on Chitwan.

These efforts have produced measurable recoveries. The greater one-horned rhino population in Chitwan rose to 694 in the 2021 National Rhino Count (out of 752 nationwide), up from 605 in the park in the 2015 count. The park's Bengal tiger population reached an estimated 128 in the 2022 census, up sharply from 93 in 2018, contributing to Nepal's achievement of nearly tripling its national tiger numbers under the global Tx2 / Global Tiger Recovery commitment. A long-running rhino translocation programme has also used Chitwan as a source population to re-establish rhinos in Bardia and Shuklaphanta National Parks.

Significant threats persist. Habitat pressures include the spread of invasive species such as Mikania micrantha across grasslands, unregulated livestock grazing, and the encroachment of human settlement and agriculture along the park margins. Periodic flooding of the Narayani and Rapti rivers reshapes — and sometimes destroys — riverine habitat, while drought and shifting river courses threaten the gharial breeding stretches. Poaching has not been eliminated, and human-wildlife conflict — crop raiding, livestock predation and occasional attacks — remains a serious challenge for buffer-zone communities. The IUCN World Heritage Outlook continues to monitor these pressures alongside the impacts of tourism and proposed infrastructure.

Chitwan is among Nepal's most visited natural attractions and the most accessible from the country's main travel routes. The principal gateway is Bharatpur, the nearest city, which has an airport with regular flights from Kathmandu and lies on the highway network connecting the capital, Pokhara and the Indian border. Most visitors base themselves in the tourist village of Sauraha on the park's northern edge, where lodges, guides and the park's main entry and orientation facilities cluster along the Rapti River; the western sector around Meghauli offers a quieter alternative.

Typical activities are guided jungle walks, canoe trips on the Rapti, jeep safaris, birdwatching, and visits to the Gharial Breeding Centre; wildlife viewing is best in the cooler, drier months from roughly October to March, when grasses are lower and animals more visible. The buffer zone is integral to the visitor experience and to conservation finance — communities surrounding the park receive a substantial share of park-generated tourism revenue for local development, and many lodges and the celebrated Tharu cultural performances are community-run.

Visitors are expected to follow strict etiquette to protect both wildlife and themselves: enter only with licensed guides and valid permits, keep a safe distance from rhinos, tigers, sloth bears and elephants (all of which can be dangerous), never feed or harass animals, avoid loud noise and single-use plastics, and stay on designated trails and waterways. Riding captive elephants for safaris has drawn growing criticism on welfare grounds, and many operators and conservation groups now encourage jeep and walking safaris instead. Respecting the rights and culture of the resident Tharu and other local communities is also part of responsible visiting to this World Heritage Site.