This lesson discusses water resources and water pollution. It contains slides that explain key concepts like water sources, uses of water resources, and types and causes of water pollution. The lesson directs learners to go through the slides using their mouse and notes provided, and includes brain teasers to check understanding. After completing the lesson, learners can test their knowledge of the material.

1. INNOVATIVE
LESSON
MANNUAL

2. Water Resources and
Water Pollution

5. Direction for computer Assisted lesson
Follow the instruction given below
• This lesson is about the topic water resources and water pollution.
• This capsule contain suitable slides related to the concept.
• Necessary picture are provided in each slide.
• Use mouse to move to the next slide.
• Please note the direction given by the computer.
• Brain teasers are provided for self checking with necessary
explanation.
• After completing the lesson the learners can recapitulate the lesson
through Test Your knowledge session.

6. Water Resources
• Water
– Earth’s surface is covered by 71% water
– Essential for life – can survive only a few
days without water

8. Water sources
Surface runoff – 2/3 lost to floods and not available
for human use.
• Reliable runoff = one third
• Amount of runoff that we can count on year to year
Groundwater
• Zone of saturation
• Water table – top of zone of saturation
• Aquifer – water saturated layers of sand, gravel
or bedrock through which groundwater flows.
• Recharge slow ~ 1 meter per year

10. Use of Water Resources
Humans directly or indirectly use about 54% of
reliable runoff
Withdraw 34% of reliable runoff for:
• Agriculture – 70%
• Industry – 20%
• Domestic – 10%
Leave 20% of runoff in streams for human use:
transport goods, dilute pollution, sustain fisheries
Could use up to 70-90% of the reliable runoff by
2025

14. Deforestation and flooding

15. Solutions
Sustainable Water Use
• Not depleting aquifers
• Preserving ecological health of aquatic systems
• Preserving water quality
• Integrated watershed management
• Agreements among regions and countries sharing
surface water resources
• Outside party mediation of water disputes between
nations
• Marketing of water rights
• Raising water prices
• Wasting less water
• Decreasing government subsides for supplying
water
• Increasing government subsides for reducing
water waste
• Slowing population growth

17. Brain Teaser 2.1
Is deforestation create any problem in water resources?

21. Types of Water Pollution
• Disease-causing organisms
– from untreated sewage, runoff from feed lots
• Toxic chemicals
– pesticides, fertilizers, industrial chemicals
• Heavy metals
– lead, mercury
• Acids (to discuss later)
• Elevated temperatures = Thermal Pollution
– water is used for cooling purposes, then heated
water is returned to its original source
– any increase in temperature, even a few degrees,
may significantly alter some aquatic ecosystems.

22. Groundwater Pollution
• Agricultural products
• Underground storage tanks
• Landfills
• Septic tanks
• Surface
impoundments

23. Growth of population
• Supply & demand are in growing
conflict – supply is finite – water
management driven by values and
needs
• Increases demand/use of water
• Increases land use and changes
vegetation and permeability
• Increases demand for instream values –
instream flows are for people

26. Agriculture uses approximately 70% of the water withdrawn
from our streams and rivers

27. • Brain teaser 2.2
Water pollution creates any
problem in the world?

30. STOP WATER POLLUTION
AND
SAVE WATER