Himachal Pradesh, the "Land of Snow," is a mountainous state in the western Himalayas, carved out as a full state on 25 January 1971. Its geography directly shapes its climate, economy, and culture—making this a favourite topic in HP TET's Environmental Studies section. Questions typically test your knowledge of mountain ranges, river systems, district-wise features, and climatic zones.
Understanding HP's geography helps connect classroom EVS topics (water, travel, shelter, plants and animals) to the local context—exactly what NCF recommends. Expect 2–4 questions on physical features, rivers, and climate in the exam. Mastering the five major rivers and three physiographic zones is non-negotiable.
Key Concepts
**Three Physiographic Zones**: HP is divided into the Outer Himalayas (Shivaliks), Inner/Lesser Himalayas (mid-mountains), and Greater Himalayas/Trans-Himalayas (Zanskar range in Lahaul-Spiti). Altitude increases as you move north.
**Five Major Rivers**: Sutlej, Beas, Ravi, Chenab, and Yamuna—all originate from glaciers or high-altitude lakes and belong to the Indus system (except Yamuna, which joins the Ganga system).
**Altitudinal Variation**: Elevations range from about 350 m (Una plains) to 6,816 m (Reo Purgyil peak). This variation creates multiple climatic zones within one state.
**Monsoon Influence**: The southwest monsoon (June–September) brings 70–80% of annual rainfall. Districts like Kangra and Dharamshala receive heavy rainfall; Lahaul-Spiti remains a cold desert.
**Rain-Shadow Effect**: Areas north of the Dhauladhar and Pir Panjal ranges receive scanty rainfall because moisture-laden winds are blocked by these ranges.
**Glaciers as Water Towers**: Glaciers like Bara Shigri (Lahaul), Bhadal, and Parvati feed rivers year-round, crucial for hydropower and irrigation downstream.
**District-River Association**: Each district is identified by its river valley—e.g., Kullu lies in Beas valley; Kinnaur along Sutlej; Chamba along Ravi.
Formulas / Key Facts
| Feature | Details | |---------|---------| | **Total Area** | 55,673 sq km (ranks 17th among Indian states) | | **Number of Districts** | 12 | | **State Capital** | Shimla (summer), Dharamshala (winter/second capital) | | **Highest Peak** | Reo Purgyil (6,816 m) in Kinnaur | | **Longest River in HP** | Sutlej (~320 km within HP) | | **Largest Glacier** | Bara Shigri (Lahaul-Spiti) | | **Coldest Inhabited Place** | Kibber (Spiti) at ~4,270 m | | **Wettest Area** | Dharamshala-Palampur belt (>3,000 mm annual rainfall) | | **Driest Area** | Lahaul-Spiti (<500 mm, cold desert) | | **Major Passes** | Rohtang (Kullu-Lahaul), Kunzum (Lahaul-Spiti), Jalori, Baralacha La |
### River Quick Facts
| River | Origin | Enters HP at | Exits HP at | Key Districts | |-------|--------|--------------|-------------|---------------| | **Sutlej** | Mansarovar-Rakas lakes (Tibet) | Shipki La (Kinnaur) | Bhakra (Punjab border) | Kinnaur, Shimla, Bilaspur | | **Beas** | Beas Kund near Rohtang | — (originates within HP) | Mirthal (Punjab border) | Kullu, Mandi, Kangra, Hamirpur | | **Ravi** | Bara Bangahal (Kangra) | — (originates within HP) | Kheri (J&K/Punjab border) | Chamba | | **Chenab** | Confluence of Chandra & Bhaga at Tandi | — (originates within HP) | Enters J&K near Pangi | Lahaul-Spiti, Chamba (Pangi) | | **Yamuna** | Yamunotri glacier (Uttarakhand) | Khadar Majri (Sirmaur) | Tajewala (Haryana border) | Sirmaur |
### Climatic Zones
1. **Sub-Tropical (up to 1,000 m)** — Hot summers, mild winters; found in Una, Bilaspur, lower Kangra. 2. **Temperate (1,000–3,500 m)** — Pleasant summers, cold winters with snowfall; Shimla, Kullu, Dharamshala. 3. **Alpine/Cold Desert (above 3,500 m)** — Harsh winters, scanty rainfall; Lahaul-Spiti, Kinnaur uplands.
Worked Examples
**Q1.** *Which river originates outside India but flows through Himachal Pradesh?*
**Solution:**
Sutlej originates near Mansarovar-Rakas lakes in Tibet (China).
It enters HP at Shipki La in Kinnaur district.
**Answer: Sutlej**
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**Q2.** *Arrange the following districts from lowest to highest average elevation: Lahaul-Spiti, Una, Shimla.*
**Solution:**
Una lies in the Shivalik foothills — lowest (350–700 m).
Shimla is in the mid-Himalayas — moderate (1,500–2,200 m average).
Lahaul-Spiti is in the Greater/Trans-Himalayas — highest (3,000–6,000 m).
**Answer: Una < Shimla < Lahaul-Spiti**
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**Q3.** *Why does Lahaul-Spiti receive very little rainfall despite being in a Himalayan state?*
**Solution:**
The monsoon winds travel from the southwest.
The Pir Panjal and Greater Himalayan ranges block these moisture-laden winds.
Lahaul-Spiti lies in the rain-shadow zone beyond these ranges.
**Answer: Rain-shadow effect of high mountain ranges**
Common Mistakes
1. **Confusing Sutlej's origin with Beas** — Students often think Sutlej originates at Rohtang. *Correct:* Sutlej originates in Tibet; Beas originates at Beas Kund near Rohtang Pass.
2. **Mixing up Chenab's tributaries** — Students forget that Chenab is formed by the confluence of Chandra and Bhaga rivers at Tandi in Lahaul. *Remember:* Chandra + Bhaga = Chenab.
3. **Assuming all HP rivers join the Ganga** — Only Yamuna belongs to the Ganga system. *Correct:* Sutlej, Beas, Ravi, and Chenab are part of the Indus system.
4. **Ignoring altitudinal climate variation** — Stating HP has a "cold climate" ignores the sub-tropical zone in lower districts like Una and Bilaspur. *Fix:* Always mention the three climatic zones.
5. **Wrong highest peak** — Students confuse Reo Purgyil with peaks outside HP (like Nanda Devi). *Correct:* Reo Purgyil (6,816 m) in Kinnaur is HP's highest peak.
Quick Reference
**Five Rivers (west to east):** Ravi → Beas → Sutlej → Yamuna (Chenab flows through Lahaul-Pangi in north)
**Only Tibetan-origin river:** Sutlej (enters at Shipki La)
**Only Ganga-system river:** Yamuna
**Bara Shigri:** Largest glacier, feeds Chenab via Chandra river