Balbharati Notes: Physiography and Climate of Maharashtra (Class 9 Geography) (Trilingual)

MPSC & State Board Study Guide: Physiography and Climate of Maharashtra (Class 9 Geography)

1. MPSC Syllabus Mapping

• MPSC Rajyaseva (State Services) Prelims & Combined Exam (Group B & C) Prelims: General Studies (Geography of India with special reference to Maharashtra – Physical Geography, Physiographic Divisions, River Systems, and Climate).
• MPSC Rajyaseva Mains (GS Paper I – Section 1.2 & 1.5):
  • Physical Geography of Maharashtra: Geological structure, physiographic divisions, Sahyadri and its offshoots, hills, peaks, passes, and coastal features.
  • Climate: Monsoon behavior, distribution of rainfall, temperature variations, drought-prone areas (पर्जन्यछायेचा प्रदेश), and climatic regions of Maharashtra.
• Balbharati Alignment: Aligned with Maharashtra State Board Class 9 Geography (Chapter 2 & 3) and Class 11 Geography.

2. Core Factual Summary: Location, Extent, and Boundaries

Maharashtra is located in the western and central part of India, occupying a major portion of the Deccan Plateau. The state has a distinctive shape resembling a triangle with its base along the Arabian Sea and apex pointing eastwards.

• Latitudinal Extent: 15°44′ N to 22°6′ N latitude.
• Longitudinal Extent: 72°36′ E to 80°54′ E longitude.
• Total Geographical Area: 3,07,713 sq. km. (accounts for 9.36% of India’s total geographical area, making it the 3rd largest state by area after Rajasthan and Madhya Pradesh).
• Boundaries:
  • West: Arabian Sea (अरबी समुद्र).
  • North-West: Gujarat and Union Territory of Dadra and Nagar Haveli.
  • North & North-East: Madhya Pradesh.
  • East: Chhattisgarh.
  • South-East: Telangana.
  • South: Karnataka and Goa.

3. Physiographic Divisions of Maharashtra

According to the Class 9 Balbharati text, Maharashtra is divided into three distinct physiographic regions running parallel to each other from north to south:

A. The Konkan Coastal Plain (कोंकण किनारपट्टी)

The narrow strip of land lying between the Arabian Sea on the west and the Sahyadri Mountain Range on the east is known as the Konkan Coast. It is a rugged and dissected coastal plain formed due to the tectonic subsidence of the western coast.

• Dimensions: It stretches from the Damanganga River (दमणगंगा नदी) in the north to the Terekhol Creek (तेरेखोल खाडी) in the south. The length is approximately 720 km. The width varies from 30 to 60 km, being wider in the north (Ulhas Basin) and narrower in the south.
• Topography: The Konkan region is characterized by transverse hills, estuaries, creeks (खाड्या), and sandy beaches. The creeks are tidal inlets formed at river mouths, such as Dahanu, Vasai, Dharamtar, Rajapuri, Dabhol, Jaigad, Vijaydurg, Karli, and Terekhol creeks.
• Sub-divisions of Konkan:
  • North Konkan (उत्तर कोंकण): Comprises Mumbai City, Mumbai Suburban, Thane, Palghar, and Raigad districts. The soil is predominantly alluvial and loamy, and the landscape is relatively less rugged.
  • South Konkan (दक्षिण कोंकण): Comprises Ratnagiri and Sindhudurg districts. This region is dominated by laterite rock (जांभी मृदा), which is rich in iron and aluminum minerals, giving the soil a reddish hue. It is highly dissected with steep slopes.

B. The Sahyadri Mountain Range / Western Ghats (सह्याद्री पर्वत / पश्चिम घाट)

The Sahyadri range forms the continuous western wall of the Deccan Plateau. It acts as a major water divide (जलविभाजक) separating the rivers flowing westwards into the Arabian Sea from those flowing eastwards into the Bay of Bengal.

• Extent and Elevation: The length of Sahyadri in Maharashtra is about 440 km. Its average height is around 915 m to 1,220 m. The height generally increases towards the south. The western slope is extremely steep and escarped due to faulting, while the eastern slope merges gently into the Deccan Plateau.
• Key Mountain Peaks in Maharashtra (in descending order of height):
  1. Kalsubai (कळसूबाई): 1646 meters (Ahmednagar District – Akole Taluka) — The highest peak in Maharashtra.
  2. Salher (साल्हेर): 1567 meters (Nashik District).
  3. Mahabaleshwar (महाबळेश्वर): 1438 meters (Satara District).
  4. Harishchandragad (हरिश्चंद्रगड): 1424 meters (Ahmednagar District).
  5. Saptashrungi (सप्तशृंगी): 1416 meters (Nashik District).
  6. Torna (तोर्णा): 1404 meters (Pune District).
• Major Mountain Passes (घाट मार्ग): These passes are crucial for MPSC as they connect the coastal Konkan plain with the plateau:
  • Thal Ghat / Kasara Ghat (थळ घाट / कसारा घाट): Connects Mumbai to Nashik.
  • Bhor Ghat (बोर घाट): Connects Mumbai to Pune.
  • Varandha Ghat (वरंधा घाट): Connects Mahad to Bhor.
  • Kumbharli Ghat (कुंभार्ली घाट): Connects Chiplun to Karad.
  • Amba Ghat (आंबा घाट): Connects Ratnagiri to Kolhapur.
  • Phonda Ghat (फोंडा घाट): Connects Kankavli to Kolhapur.
  • Amboli Ghat (आंबोली घाट): Connects Sawantwadi to Belagavi.

C. The Maharashtra Plateau / Deccan Plateau (महाराष्ट्र पठार / दख्खनचे पठार)

Occupying more than 85% of the state’s geographical area, the Maharashtra Plateau is composed of basalt rock formed by fissure-type volcanic eruptions (ज्वालामुखी बेसाल्ट खडक) that occurred millions of years ago during the Cretaceous period.

• Characteristics: The average elevation of the plateau is about 450 m, and it slopes gently eastwards and south-eastwards. The thickness of the basaltic layer (Deccan Trap) is greatest in the west near the Sahyadri range (up to 2,000 meters) and decreases towards the east.
• Sub-ranges (Sahyadri’s Offshoots): Several hill ranges branch out eastwards from the main Sahyadri range, separating the major river basins:
  • Satmala-Ajanta Ranges (सातमळा-अजिंठा डोंगररांगा): Separate the Tapi-Purna River basin in the north from the Godavari River basin in the south.
  • Harishchandragad-Baleshwar Ranges (हरिश्चंद्रगड-बालेघाट डोंगररांगा): Separate the Godavari River basin from the Bhima River basin.
  • Mahadev Ranges / Shambhu Mahadev (शंभू महादेव डोंगररांगा): Separate the Bhima River basin from the Krishna River basin.
• Local Plateaus: High-altitude flat regions on the plateau include the Buldhana Plateau, Yeotmal Plateau, Saswad Plateau, and Kas Plateau (Satara).

4. Climate of Maharashtra

Maharashtra experiences a Tropical Monsoon Climate (उष्णकटिबंधीय मान्सून हवामान). The climate is heavily influenced by the physiography of the Sahyadri range, which acts as a barrier to the moisture-laden monsoon winds.

A. Key Climatic Factors and Features

• Temperature:
  • Coastal Region (Konkan): Experiences an equable and humid climate (समशीतोष्ण व दमट हवामान) due to maritime influence. The annual range of temperature is narrow, staying between 25°C and 32°C.
  • Plateau Region: Experiences an extreme or continental climate (विषम हवामान). The summer temperature in Vidarbha (विदर्भ) and Central Maharashtra (मध्य महाराष्ट्र) can exceed 45°C, especially in places like Chandrapur, Wardha, and Jalgaon.
• Rainfall Distribution (Orographic Rainfall – प्रतिरोध पर्जन्य):
  • The South-West Monsoon winds (नैऋत्य मान्सून वारे) strike the Sahyadri mountains, causing heavy precipitation on the windward side (Konkan and Western slopes of Sahyadri). Rainfall here ranges from 3,000 mm to over 6,000 mm.
  • Amboli (आंबोली): Located in Sindhudurg district, Amboli receives the highest annual rainfall in Maharashtra (approx. 7,500 mm) and is known as the “Cherrapunji of Maharashtra.”
  • Rain-Shadow Region (पर्जन्यछायेचा प्रदेश): As the monsoon winds cross the Sahyadri and descend on the eastern side, they lose moisture. This creates a rain-shadow zone in Central Maharashtra (districts like Solapur, Ahmednagar, Pune-east, Sangli, and Satara) which receives less than 500–600 mm of annual rainfall.
  • Eastern Vidarbha: Receives moderate to high rainfall (1,000 mm to 1,500 mm) from both the Bay of Bengal branch and the Arabian Sea branch of the South-West Monsoon.

B. Seasons in Maharashtra

1. Hot Weather Season (Summer – उन्हाळा): March to May. Temperatures rise rapidly. Dry weather prevails.
2. South-West Monsoon Season (Rainy Season – पावसाळा): June to September. Brings about 85% of the state’s total rainfall.
3. Retreating Monsoon Season (ऑक्टोबर हीट): October to November. High temperature and humidity cause sultry weather conditions.
4. Cold Weather Season (Winter – हिवाळा): December to February. Dry, cool winds blow from the north. Minimum temperatures drop significantly in northern Maharashtra and Vidarbha.

5. High-Yield Revision Table

6. Mock MCQs for Practice

1. Which of the following statements is/are correct regarding the Sahyadri Mountain Range in Maharashtra?
   i. The average elevation of the Sahyadri range in Maharashtra is 915 m to 1,220 m.
   ii. The height of the Sahyadri range increases towards the north in Maharashtra.
   iii. The western slope of the Sahyadris is gentle, while the eastern slope is steep and escarped.
   Options:
   A) Only i is correct.
   B) Only i and ii are correct.
   C) Only ii and iii are correct.
   D) All of the above are correct.
   Answer: A
   Explanation: Statement i is correct. Statement ii is incorrect because the height of the Sahyadri range generally increases towards the south, not the north. Statement iii is incorrect because the western slope is extremely steep and escarped due to faulting, while the eastern slope is gentle and merges into the Maharashtra Plateau.


2. Arrange the following peaks of Maharashtra in the descending order of their heights:
   i. Mahabaleshwar (महाबळेश्वर)
   ii. Salher (साल्हेर)
   iii. Kalsubai (कळसूबाई)
   iv. Harishchandragad (हरिश्चंद्रगड)
   Options:
   A) iii – ii – i – iv
   B) iii – i – ii – iv
   C) iii – ii – iv – i
   D) ii – iii – i – iv
   Answer: C
   Explanation: The correct descending order is: Kalsubai (1646 m) > Salher (1567 m) > Harishchandragad (1424 m) > Mahabaleshwar (1438 m). Therefore, the sequence is iii (1646 m) – ii (1567 m) – iv (1424 m) – i (1438 m) is incorrect. Wait, let’s recheck the heights: Kalsubai is 1646 m, Salher is 1567 m, Mahabaleshwar is 1438 m, Harishchandragad is 1424 m. So the correct descending order is Kalsubai (1646 m) > Salher (1567 m) > Mahabaleshwar (1438 m) > Harishchandragad (1424 m). That maps to: iii – ii – i – iv. The correct option is A.


3. Match the following pairs of Mountain Passes (घाट) and the cities they connect:
   

   a. Thal Ghat (थळ घाट)	1. Kolhapur to Ratnagiri
   b. Bhor Ghat (बोर घाट)	2. Mumbai to Nashik
   c. Amba Ghat (आंबा घाट)	3. Sawantwadi to Belagavi
   d. Amboli Ghat (आंबोली घाट)	4. Mumbai to Pune

   Options:
   A) a-2, b-4, c-1, d-3
   B) a-4, b-2, c-3, d-1
   C) a-2, b-4, c-3, d-1
   D) a-1, b-3, c-2, d-4
   Answer: A
   Explanation: Thal Ghat (also called Kasara Ghat) connects Mumbai to Nashik on NH-3. Bhor Ghat connects Mumbai to Pune on NH-4. Amba Ghat connects Kolhapur to Ratnagiri. Amboli Ghat connects Sawantwadi to Belagavi.


4. Which of the following mountain ranges separates the Godavari river basin from the Bhima river basin?
   A) Satmala-Ajanta Range (सातमळा-अजिंठा डोंगररांगा)
   B) Harishchandragad-Baleshwar Range (हरिश्चंद्रगड-बालेघाट डोंगररांगा)
   C) Shambhu Mahadev Range (शंभू महादेव डोंगररांगा)
   D) Melghat Range (मेळघाट डोंगररांगा)
   Answer: B
   Explanation: The Satmala-Ajanta range separates the Tapi-Purna basin from the Godavari basin. The Harishchandragad-Baleshwar range separates the Godavari basin from the Bhima basin. The Shambhu Mahadev range separates the Bhima basin from the Krishna basin.


5. Consider the following statements regarding the climate of Maharashtra:
   i. The rainfall in Konkan is mainly of the cyclonic type.
   ii. Central Maharashtra falls under the rain-shadow region of the Sahyadri range.
   iii. Eastern Vidarbha receives rainfall only from the Arabian Sea branch.
   Which of the above statements is/are incorrect?
   A) i and ii only
   B) ii and iii only
   C) i and iii only
   D) i, ii, and iii
   Answer: C
   Explanation: Statement i is incorrect because the rainfall in Konkan and Western Maharashtra is predominantly of the orographic (प्रतिरोध) type, caused by the physical barrier of the Sahyadris. Statement ii is correct as Central Maharashtra lies on the leeward side of the Sahyadri range, receiving low rainfall (rain-shadow zone). Statement iii is incorrect because Eastern Vidarbha receives rainfall from both the Arabian Sea and the Bay of Bengal branches of the South-West Monsoon.

7. Mains Descriptive Model Question

Question: “The physical features of Maharashtra have played a decisive role in shaping the climatic patterns and regional variations in rainfall across the state.” Critically analyze this statement with suitable examples. (15 Marks, 250 Words)

Model Answer Structure & Key Points:

• Introduction: Briefly state the geographical positioning of Maharashtra and introduce the three main physiographic divisions—the Konkan Coast, the Sahyadri range (Western Ghats), and the Deccan Plateau. Mention that the Sahyadri range acts as the main climatic divide for the state.
• Influence of Sahyadri on Rainfall (Orographic Mechanism):
  • Explain how the Sahyadri runs parallel to the western coast, standing perpendicular to the direction of the moisture-laden South-West Monsoon winds from the Arabian Sea.
  • This causes heavy orographic precipitation (प्रतिरोध पर्जन्य) on the windward side, giving the Konkan coast and Western Ghats (e.g., Mahabaleshwar and Amboli) high rainfall exceeding 3000 mm.
• The Creation of the Rain-Shadow Region (पर्जन्यछायेचा प्रदेश):
  • Explain that once the monsoon winds cross the crest of the Sahyadri and descend towards the east, adiabatic warming occurs, decreasing the relative humidity of the winds.
  • This leads to the formation of a dry belt in Central Maharashtra (e.g., eastern parts of Pune, Satara, Sangli, and districts like Ahmednagar and Solapur) which receive less than 600 mm of annual rainfall, leading to frequent drought conditions.
• Regional Temperature Variations:
  • Show how the Konkan’s low elevation and proximity to the sea maintain moderate, equable temperatures and high humidity year-round.
  • Contrast this with the Deccan Plateau, where continental features lead to high thermal variations (extreme summers in Vidarbha, with cities like Nagpur and Chandrapur recording 45°C+).
• Climate of Eastern Vidarbha:
  • Explain how the low relief of the eastern part of the plateau allows the ingress of the Bay of Bengal branch, ensuring that Eastern Vidarbha gets high rainfall (1200–1400 mm) which supports dense forest covers, unlike dry Western Maharashtra.
• Conclusion: Summarize by highlighting how physiography dictates agriculture, cropping patterns (e.g., rice in Konkan, drought-tolerant millets in the rain-shadow region, and cotton/soybean in Vidarbha), water management policies, and economic planning in Maharashtra.