Water Resources
Tripura Board · Class 10 · Social Science
Complete topic list for Water Resources in Tripura Board Class 10 Social Science. Key concepts, sub-topics, and what to focus on for board exams.
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Water Availability and the Hydrological Cycle
- Three-fourths of Earth's surface is covered with water, but only a small proportion accounts for usable freshwater
- Freshwater is obtained from surface runoff and groundwater, continuously renewed through the hydrological cycle
- The hydrological cycle includes evaporation, condensation, precipitation, and collection processes
Water Scarcity - Causes and Types
- Water scarcity occurs due to over-exploitation, excessive use, and unequal access among social groups
- Availability varies over space and time due to seasonal and annual precipitation variations
- Large populations require more water for domestic use and food production
Multi-Purpose River Projects and Dams
- Dams are barriers across flowing water that create reservoirs for multiple uses
- Multi-purpose projects integrate irrigation, electricity generation, water supply, flood control, recreation, and navigation
- Examples include Bhakra-Nangal project (Sutlej-Beas basin) and Hirakud project (Mahanadi basin)
Problems with Large Dams and Multi-Purpose Projects
- Dams affect natural river flow, causing poor sediment flow and excessive reservoir sedimentation
- River fragmentation makes it difficult for aquatic fauna to migrate and spawn
- Submergence of vegetation and soil leads to decomposition and environmental degradation
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Central concept: Water Resources
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