Class 12 Geography Notes Chapter 16 : NCERT CBSE RBSE and Other State Board Solutions for Class 12 Geography Notes for Chapter 16 Water Resources Notes questions answers MCQs Download PDF
Class 12 Geography Notes Chapter 16 Water Resources
THE FACTORS RESPONSIBLE FOR THE DEPLETION OF WATER RESOURCES IN INDIA ARE FOLLOWING:
1. Increasing population is the main cause of the depletion of water resources in India.
2. A large amount of water is being used in agriculture.
3. Increasing industries is the main reason for the depletion of water.
FOLLOWING FACTORS ARE RESPONSIBLE FOR THE HIGHEST GROUNDWATER DEVELOPMENT IN THE STATE OF PUNJAB, HARYANA & TAMIL NADU:
1. Groundwater utilization is very high in these three states.
2. In Punjab & Haryana there is not sufficient surface water due to less rainfall & groundwater is used on large scale.
3. Soft soil facilitates sinking of tube wells.
4. In Tamil Nadu, for the cultivation of rice a big amount of water is used.
THE SHARE OF AGRICULTURE SECTOR IN TOTAL WATER USED IN THE COUNTRY IS LIKELY TO DECLINE
1. Because other sectors like industry are progressing at a much faster rate than agriculture.
2. And consumption of water in the other sectors is likely to increase.
WHAT CAN BE POSSIBLE IMPACTS OF CONSUMPTION OF CONTAMINATED/UNCLEAN WATER ON THE PEOPLE?
1. Consumption of unclean water can lead to large no. of diseases like dysentery, cholera, tuberculosis, jaundice etc.
2. About 80 % of diseases in India are due to polluted water.
DISCUSS THE AVAILABILITY OF WATER RESOURCES IN INDIA & THE FACTORS THAT DETERMINE ITS SPATIAL DISTRIBUTION.
1. Major sources of surface water are rivers, lakes, ponds & tanks.
2. Due to many hurdles 32 % of available surface water can be utilised.
3. The Ganga, Brahmaputra & Indus account for 60 % of the total water resources in India.
4. The availability of water is uneven in different states.
THE FOLLOWING FACTORS DETERMINE SPATIAL DISTRIBUTION OF WATER RESOURCES:
1. The presence of rivers, lakes & ponds is a natural factor.
2. Topological factors like the amount of rainfall determine total availability of water resources.
3. Areas with greater rainfall are rich in groundwater resources.
4. Technological factors: Watershed management & rainwater harvesting ensure sufficient water resources.
WATERSHED MANAGEMENT
1. It basically refers to an efficient management & conservation of surface & groundwater resources.
2. It involves prevention of runoff, storage of recharge of groundwater through various methods.
3. In detail, watershed management includes conservation, regeneration & proper use of all resources.
THE CENTRAL POLLUTION CONTROL BOARD IN COLLABORATION WITH STATE POLLUTION CONTROL BOARDS HAS BEEN MONITORING WATER QUALITY OF NATIONAL AQUATIC RESOURCES AT 507 STATIONS. (2014)
WHY IS CONSERVATION OF WATER NECESSARY? STATE ITS TWO METHODS.
WHY IS DEMAND OF WATER FOR IRRIGATION INCREASING DAY BY DAY? EXPLAIN THREE REASONS.
WHAT ARE THE TWO WATER PROBLEMS IN INDIA? EXPLAIN WITH SUITABLE EXAMPLES.
NAME THE LOW-COST TECHNIQUES TO RECHARGE WATER.
