2. Geographic Classification — Geographical Classification of Delhi

Overview

Delhi's geographic composition shapes its political, environmental and economic character. Below is a clear, corrected and SEO-friendly expansion of Delhi's geographic classification, covering location, area, topography, climate, water sources, regional zones, green areas, and environmental challenges.

A. Geographic Location

Latitude: 28.40°N to 28.88°N

Longitude: 76.84°E to 77.34°E

Mean elevation: about 216 metres (≈711 feet) above sea level.

Position: Delhi is located in northern India, mainly along the western bank of the Yamuna River.

Boundaries: Bordered to the north, west and south by the state of Haryana; to the east by the state of Uttar Pradesh (Ghaziabad, Noida area).

B. Area

Total area: Approximately 1,484 sq km. Delhi is relatively small in area but has a very high population density compared to most Indian states/territories.

C. Topography & Landforms

Delhi's landscape is primarily a flat alluvial plain with local variations. Key topographic features:

  • Alluvial plains: Fertile plains along the Yamuna formed by river deposits; includes floodplains (Yamuna khadar).
  • Ridge & low hills (Aravalli outcrops): Small hill mounds and the Delhi Ridge — western/southern parts have rocky, elevated stretches that are part of the Aravalli range extension.
  • Sandy & semi-arid zones: Western parts of Delhi tend to be drier and more sandy due to lower rainfall and soil characteristics.
  • Green belts: Natural ridges and plantation belts help form Delhi's green lung areas.

D. Climate

Delhi experiences a semi-arid climate with strong seasonal contrasts. Typical seasonal pattern and features are summarized below.

Seasonal Overview
SeasonDurationTypical features
SummerApril – JuneHot to very hot; daytime temperatures can reach ~45°C.
Monsoon / RainyJuly – SeptemberMain rainfall period; average annual rainfall ~700–800 mm (varies yearly).
Autumn / Post-monsoonOctober – NovemberClear skies, pleasant days and cooling nights.
WinterDecember – FebruaryCold nights, frequent fog and lows often near 4°C in cold spells.

E. Water Sources & Water Bodies

Primary river: The Yamuna is Delhi's main natural watercourse and has historically been central to settlement and economy. Today it is ecologically stressed and suffers from pollution, but remains important geographically and culturally.

Other water bodies & canals

  • Lakes: Bhalswa Lake, Sanjay Lake, and other small wetlands in and around the city.
  • Canals: Western Yamuna Canal and smaller distribution canals historically used for irrigation and water supply.

F. Major Geographic Zones (Regional Divisions)

Delhi can be generally divided into four broad geographic/regional parts:

North Delhi (Old/Historic areas)

Includes parts of Old Delhi: historic structures, narrow lanes and bazaars (e.g., areas around Red Fort and Jama Masjid).

South Delhi

Modern, well-planned and often affluent neighborhoods: Saket, Greater Kailash, areas around Qutub Minar and Hauz Khas.

East Delhi

East of Yamuna — largely residential localities such as Laxmi Nagar and Mayur Vihar; growing commercial pockets.

West Delhi

Denser residential and industrial areas — localities like Janakpuri, Vikaspuri and nearby industrial clusters.

G. Green Areas & Forested Zones

The Delhi Ridge: A protective green spine and an extension of the Aravalli, often called the 'lungs of Delhi' due to its ecological role. Ridge sections include northern, central, southern and Tughlaqabad parts.

Parks & Gardens

  • Lodi Gardens
  • Buddha Jayanti Park
  • Nehru Park
  • Numerous neighbourhood parks and plantation belts across the city

H. Environmental Challenges

Delhi faces several serious environmental issues that affect quality of life and long-term sustainability:

  • Air pollution: Delhi is among India's most air-polluted major cities; PM2.5 and seasonal smog (winter) are major concerns.
  • Water pollution: The Yamuna has significant pollution loads; water quality and ecological health are degraded.
  • Loss of green cover: Rapid urbanization and construction have reduced natural green areas in parts of the city.
  • Groundwater depletion: Over-extraction and seasonal deficits have caused declining water tables in many areas.

Summary (Quick Facts)

Area≈ 1,484 sq km
Main riverYamuna
TopographyMostly flat alluvial plains with Ridge/Aravalli outcrops
ClimateSemi-arid — hot summers, monsoon rains, cool winters with fog
Green featuresDelhi Ridge, major parks and urban green belts
Key environmental issuesAir & water pollution, groundwater depletion, urban pressure
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Map showing Delhi with Yamuna, Ridge and major zones (placeholder)
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