Most people know Nepal through its three traditional regions — the Himal, Pahad, and Terai. But geographers, researchers, and government planners use a more detailed classification: the five physiographic regions.
Each region has distinct elevation, climate, geology, and land use. Understanding them explains everything from where Nepal’s farmland is to where its forests grow, where landslides happen, and where people can live.
The Five Regions at a Glance
| Region | Area Share | Elevation | Climate | Districts |
|---|---|---|---|---|
| Terai | 14% | Below 500m | Tropical | 21 |
| Siwalik (Chure) | 13–15% | 500–1,800m | Subtropical | 36 |
| Middle Mountain | 29% | 1,000–2,500m | Subtropical to warm temperate | 39 |
| High Mountain | 19–20% | 2,000–4,000m | Cold temperate | 16 |
| High Himal | 23–24% | Above 4,000m | Alpine to tundra | 15 |
Note: Districts often span multiple regions.
1. The Terai Region
The Terai is Nepal’s southernmost belt — a flat, fertile plain that runs the full length of the country along the Indian border.
Key facts:
- Elevation: Below 500 meters
- Area share: ~14% of Nepal
- Climate: Tropical to subtropical — hot, humid, with heavy monsoon
- Soils: Alluvial, highly fertile
- Population: The most densely populated region
The Terai is Nepal’s agricultural heartland — it produces the majority of the country’s rice, wheat, sugarcane, and jute. It’s also home to the Chitwan, Bardiya, and Shuklaphanta national parks.
Major districts: Jhapa, Morang, Sunsari, Chitwan, Banke, Bardiya, Kailali.
2. The Siwalik (Chure) Region
The Siwalik — called the Chure in Nepali — is the youngest and most fragile part of the Himalayan system.
Key facts:
- Elevation: 500–1,800 meters
- Area share: ~13–15%
- Climate: Subtropical, with intense monsoon
- Geology: Young, unconsolidated sediments — highly erosion-prone
- Population: Moderately populated, but rapidly changing
The Chure acts as a buffer zone between the Terai and the Middle Mountains. Its forests are crucial for wildlife corridors — connecting Nepal’s national parks to those in India.
The region faces severe environmental pressure: deforestation, sand mining, and landslides have degraded much of the Chure in recent decades.
Major districts: Ilam, Udayapur, Sindhuli, Makwanpur, Palpa, Dang, Surkhet.
3. The Middle Mountain Region
The Middle Mountain region is Nepal’s largest physiographic zone, covering nearly a third of the country.
Key facts:
- Elevation: 1,000–2,500 meters
- Area share: ~29%
- Climate: Subtropical to warm temperate
- Soils: Moderate — terraced farming dominates
- Population: Home to most of Nepal’s ethnic diversity
This region includes the Kathmandu Valley (Kathmandu, Lalitpur, Bhaktapur), Pokhara Valley (Kaski), and historic cities like Gorkha and Tansen (Palpa).
The Middle Mountain is where you find Nepal’s iconic terraced hillsides — sculpted over centuries for farming. It’s also where most of Nepal’s Hindu and Buddhist temples, and its ethnic communities, are concentrated.
Major districts: Kathmandu, Lalitpur, Bhaktapur, Kaski, Gorkha, Palpa, Ilam, Nuwakot.
4. The High Mountain Region
The High Mountain region is Nepal’s middle Himalayan belt — higher than the hills but below the snowline of the highest peaks.
Key facts:
- Elevation: 2,000–4,000 meters
- Area share: ~19–20%
- Climate: Cold temperate — cold winters, mild summers
- Vegetation: Coniferous forests, alpine shrubs
- Population: Sparse — Sherpa, Tamang, and other highland communities
This is the land of rhododendron forests, yak pastures, and the middle slopes of Nepal’s great peaks. Treks like the Langtang Valley and Helambu pass through this zone.
Major districts: Solukhumbu, Rasuwa, Manang, Mustang, Dolpa, Taplejung.
5. The High Himal Region
The High Himal is Nepal’s highest belt — the snow-covered peaks and glaciers of the Great Himalaya.
Key facts:
- Elevation: Above 4,000 meters
- Area share: ~23–24%
- Climate: Alpine to arctic — permanent snow above 5,000m
- Vegetation: Bare rock, ice, sparse alpine grasses
- Population: Very sparse — Sherpa settlements and seasonal grazing
This region contains Nepal’s eight 8,000-meter peaks including Everest, plus hundreds of glaciers. It’s the source of Nepal’s major rivers — the Koshi, Gandaki, and Karnali.
Very few people live permanently above 4,000m. The main settlements are Sherpa villages in Solukhumbu (Namche Bazaar, Khumjung) and small Tibetan-influenced communities in Mustang and Dolpa.
Major districts: Solukhumbu, Taplejung, Sankhuwasabha, Dolpa, Mustang, Manang.
Why This Classification Matters
The five-region system isn’t just academic. It’s used by:
- Government agencies for planning infrastructure, agriculture, and conservation
- Researchers studying climate, geology, and biodiversity
- Development organizations targeting projects by region
- Disaster management agencies assessing landslide, flood, and earthquake risk
Understanding the five regions explains why Nepal is so diverse — not just culturally, but in its land, its resources, and its challenges.
Frequently Asked Questions
Q: How many physiographic regions does Nepal have? Nepal has five physiographic regions: Terai, Siwalik (Chure), Middle Mountain, High Mountain, and High Himal.
Q: What is the difference between the three regions and five regions? The “three regions” (Himal, Pahad, Terai) is the traditional cultural-geographic division. The “five regions” is the scientific classification used by geographers and planners, splitting the Pahad into Siwalik, Middle Mountain, and High Mountain.
Q: Which is the largest physiographic region of Nepal? The Middle Mountain region covers about 29% of Nepal — the largest.
Q: Which is the smallest physiographic region? The Terai covers about 14% — the smallest.
Q: Where do most people live in Nepal? Most people live in the Terai and the Middle Mountain valleys, especially around Kathmandu and Pokhara.