Geography Optional Paper II – Page 8
Irrigation, Water Resources & Agricultural Regions of India
1. Importance of Irrigation in India
Irrigation plays a critical role in Indian agriculture due to monsoon uncertainty, uneven rainfall distribution, and the need for multiple cropping. It enhances productivity, stabilises yields, and supports food security.
2. Sources of Irrigation
- Canal Irrigation: Major, medium, and minor canals
- Well & Tube Well Irrigation: Most widespread method
- Tank Irrigation: Southern and Deccan regions
- River Lift Irrigation: Supplementary source
3. Canal Irrigation System
- Perennial canals – Punjab, Haryana, Western UP
- Inundation canals – seasonal flow dependent
- Issues: waterlogging, salinity, maintenance
4. Groundwater Irrigation
- Accounts for more than 60% of irrigation
- Tube wells dominant in Indo-Gangetic plains
- Over-exploitation in Punjab, Haryana, Rajasthan
5. Major River Valley Projects
- Bhakra–Nangal Project
- Hirakud Project
- Damodar Valley Project
- Nagarjuna Sagar Project
6. Interlinking of Rivers
- Aims to balance surplus and deficit basins
- Potential benefits: drought mitigation, irrigation
- Concerns: ecological impact, displacement
7. Agricultural Regions of India
- Rice Region: Eastern India, coastal plains
- Wheat Region: North-West India
- Millet Region: Semi-arid Deccan plateau
- Plantation Region: Western Ghats, Northeast
8. Problems of Irrigation in India
- Uneven regional distribution
- Waterlogging and salinity
- Declining groundwater table
- Inter-state water disputes
9. Sustainable Water Management
- Micro-irrigation (drip & sprinkler)
- Rainwater harvesting
- Watershed development
- Crop diversification
10. Previous Year Question (Model)
“Discuss the importance of irrigation in Indian agriculture and analyse the regional imbalance in irrigation development.”
11. Answer Writing Tips
- Use India map for irrigation regions
- Link irrigation with food security
- Add recent schemes like PMKSY
💧 Shaktimatha Learning | Geography Optional – Water & Agriculture
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