class 10 water resource

1. Class X
Water resources

2. WATER
SCARCITY
NATURAL
1.VARIATION
OVER SEASON
& TIME
HUMAN
1. OVER
EXPLOITATION
2. EXCESSIVE USE
3. UNEQUAL ACCESS
TO WATER

3. ASPECTS OF WATER SCARCITY
WATER SCARCITY
QUANTITATIVE
GROWING
POPULATION
COMMERCIALISATION
OF AGRICULTURE
VARIATION AND
SEASONAL AND
ANNUAL
PRECIPITATION
INDUSTRIALISATION
AND URBANISATION
QUALITATIVE POLLUTION

4. MULTIPURPOSE PROJECTS
 WHY DAMS ARE KNOWN AS MULTIPURPOSE
PROJECTS?
1. GENERATION OF ELECTRICITY
2. DEVELOPMENT OF IRRIGATION
3. WATER SUPPLY FOR DOMESTIC AND
INDUSTRIAL PURPOSE
4. FLOOD CONTROL
5. RECREATIO N
6. INLAND NAVIGATION
7. FISH BREEDING

5. Drawbacks of multipurpose project
 Adverse effects on fertility
 Adverse effect on aquatic life
 Loss of biodiversity
 Changing cropping pattern
 Unequal distribution of water

6. Critical view on multipurpose
projects
Recently it has been recognised that multipurpose
projects are not totally a blessing to society, but has
some drawbacks too.
 These projects are somewhat unable to control floods.
 They are also responsible for; earthquake, water
pollution and water borne diseases

7. Rainwater harvesting
 Rainwater harvesting is a technique of collection
and storage of rainwater into natural reservoirs or
tanks, or the infiltration of surface water into
subsurface aquifers (before it is lost as surface runoff).
One method of rainwater harvesting is
rooftop harvesting.

8. Sample picture of rainwater harvesting

9. Sample picture of rainwater harvesting

10. Sample picture of rainwater harvesting

11. Sample Video of rainwater harvesting