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Question
There is plenty of rain in India during the rainy season, yet we need irrigation. Give two reasons to support this statement.
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Solution
Despite an adequate rainfall during the rainy season, we require irrigation because
- Rainfall is uncertain, irregular and unreliable in India.
- Distribution of rainfall in the country is uneven. While some states such as Kerala and Assam receive abundant rainfall during the monsoon months, Rajasthan and Haryana hardly receive any rainfall.
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RELATED QUESTIONS
Give geographical reasons for each of the following:
The Ganga Plains gets the monsoon rain much later than the west coast of India.
Study the climatic data of station x given below and answer the questions that follow:
| Month | Jan | Feb | Mar | Apr | May | June | July | Aug | Sep | Oct | Nov | Dec |
| Temperature in °C |
24.5 | 25.7 | 27.7 | 28.4 | 30.0 | 36.2 | 31.0 | 30.2 | 29.8 | 28.0 | 25.9 | 24.7 |
| Rainfall cm | 4.6 | 1.6 | 1.7 | 2.4 | 2.8 | 4.6 | 8.6 | 11.4 | 11.8 | 30.6 | 35.0 | 13.9 |
- Calculate the total annual rainfall experienced by the station.
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Patna receives heavier rain than Delhi.
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When the Malabar Coast is receiving heavy rainfall in July, the Tamil Nadu coast is comparatively dry.
The Northern Plains of India have a Continental type of climate.
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Study the climatic data provided below and answer the questions that follow:
| Month | Jan | Feb | Mar | Apr | May | June | Jul | Aug | Sep | Oct | Nov | Dec |
| Station A (sea level) | ||||||||||||
| Temperature (°C) | 24.4 | 28.4 | 20.7 | 29.3 | 30.0 | 29.9 | 29.8 | 27.8 | 26.9 | 26.3 | 25.1 | 24.8 |
| Rainfall (cm) | 0.1 | 0.1 | 0.5 | 0.6 | 3.8 | 26.6 | 29.6 | 30.5 | 26.5 | 11.9 | 1.1 | 0.2 |
| Station B (800 m above sea level) | ||||||||||||
| Temperature (°C) | 8.1 | 8.9 | 15.6 | 20.1. | 25.2 | 24.3 | 24.1 | 22.7 | 20.6 | 18.4 | 14.1 | 9.6 |
| Rainfall (cm) | 0.4 | 0.3 | 0.3 | 1.1 | 1.3 | 3.2 | 7.7 | 1.3 | 5.8 | 0.7 | 0.4 | 0.3 |
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| Station | Month | J | F | M | A | M | J | J | A | S | O | N | D |
| A | Temperature in Degree C. | 14.4 | 16.7 | 23.3 | 30.0 | 33.3 | 33.3 | 30.0 | 29.4 | 28.9 | 25.6 | 19.4 | 15.6 |
| Rainfall in cm | 2.5 | 1.5 | 1.3 | 10 | 1.8 | 7.4 | 19.3 | 17.8 | 11.9 | 1.3 | 0.2 | 1.0 | |
| B | Temperature in Degree C. | 24.4 | 24.4 | 26.7 | 28.3 | 300 | 28.9 | 27.2 | 27.2 | 27.2 | 27.8 | 27.2 | 25.0 |
| Rainfall in cm | 0.2 | 0.2 | 0.3 | 10 | 1.8 | 50.6 | 61.0 | 24.8 | 24.8 | 24.8 | 1.0 | 0.7 |
(i) Calculate the annual rainfall in station A.
(ii) What is the annual range of temperature in station B?
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The amount of rainfall received by ______ is 100 to 200 cm of rainfall.
Now find out
Why are Tiruvanantapuram and Shillong rainier in June than in July?
