Concept notes: Chennai, the capital city of Tamil Nadu, is located on the Coromandel Coast of the Bay of Bengal. Its elevation is a crucial geographical feature that influences its climate, drainage, and urban planning. The city's average elevation is 60 meters above sea level, which is relatively low and contributes to its susceptibility to flooding during heavy rains and high tides.
Explanation: Chennai, the capital city of Tamil Nadu, is situated on the Coromandel Coast of the Bay of Bengal. The city's elevation is a critical geographical feature that influences its climate, drainage, and urban planning. The average elevation of Chennai is 60 meters above sea level, which is relatively low compared to other major cities in India. This low elevation is significant for several reasons:
1. **Climate Influence**: The low elevation contributes to Chennai's tropical climate, characterized by high temperatures and humidity throughout the year. The proximity to the sea also means that the city experiences a significant maritime influence, which can lead to higher temperatures and humidity levels.
2. **Drainage and Flooding**: The low elevation makes Chennai susceptible to flooding, especially during the monsoon season. The city's drainage system must be carefully managed to prevent waterlogging and flooding, which can be exacerbated by heavy rainfall and high tides.
3. **Urban Planning**: The elevation of the city plays a crucial role in urban planning. The low-lying areas require special attention to ensure proper drainage and to mitigate the risks associated with flooding. Additionally, the elevation affects the design of buildings and infrastructure, as they must be constructed to withstand the challenges posed by the city's topography.
4. **Geographical Context**: Understanding the elevation of Chennai is essential for comprehending its geographical context within Tamil Nadu and India. The city's elevation is part of the broader topographical landscape of the region, which includes the Eastern Ghats and the coastal plains.
In summary, the elevation of Chennai at 60 meters above sea level is a fundamental geographical fact that influences various aspects of the city's environment and urban development. This information is crucial for students studying the geography of Tamil Nadu and for those preparing for competitive examinations that cover regional geography.