1. Water Supply and Water Users
Modified by Georgia Agricultural Education Curriculum Office
June, 2002

2. Water one of the most fascinating compounds on earth
necessary ingredient for all living organisms

3. Water covers about 70% of the earth of the earth’s surface
340 million cubic miles of water on the planet

4. Water 97% is in oceans 2% is freshwater
1% is frozen in glaciers and icecaps

5. The water cycle
the amount of water on and around this planet is fairly constant
availability of water is not as constant

6. The water cycle water is continuously moving from place to place
the water cycle is called the hydrologic cycle

7. The water cycle powered by solar energy
heats the water causing it to rise into the atmosphere
called evaporation

8. The water cycle
water eventually returns to the ocean in the form of rain, sleet or snow
returned water is called meteoric water

9. The water cycle
if the oceans were not recharged, their water level would decrease over 40 inches per year

10. The water cycle the oceans are the largest reservoir of water we know
this water is unsuitable for drinking, agricultural use, or industrial use because of the high salt content

11. The water cycle
the salt is left behind when the ocean water evaporates
once the water has evaporated, it forms clouds

12. The water cycle
the water then comes back to the earth as rain, sleet or snow
clouds may drop water over land or over the ocean

13. The water cycle
rainwater accounts for only 1% of the total water supply
rain is vital in keeping the water balance on earth

14. The water cycle role of plants and animals in the cycle
plants absorb water through their roots and release it through tiny pores in their leaves called stomates

15. The water cycle
evaporation of water from plants is called transpiration
animals also need water for their growth
promotes chemical activity, regulates temperature

16. The water cycle and transports nutrients through the blood of animals
65% of an animals weight is water

17. The water cycle surface water
about 30% of the rainfall in the US falls into out lakes, ponds and streams

18. The water cycle
this surface water is the most important element to the conservationist
used by people over and over as it makes its way toward the ocean

19. The water cycle
used for agriculture
industrial
domestic needs

20. Pollution
renders much of the water unsuitable for our needs

21. Ground water
water that does not either evaporate or run off - soaks into the earth

22. Three zones surface - dry soil accepts water until saturated
zone of aeration - empty spaces filled with air, extends from the deepest roots to just above the water table

23. Three zones groundwater zone - below zone of aeration
water saturated rocks called aquifers
can equal about 100 years of surface runoff volume

24. Main components oceans evaporation - transpiration plants and animals
surface water
ground water

25. Water users variation in population densities
U.S. Population drinks about 100 million gallons of water per day
only a fraction of water used

26. Water users agriculture industry hydroelectric plants
fish and wildlife
recreational and domestic

27. Agriculture main use is irrigation most common methods include:
surface and sprinkler techniques

28. Industry uses more water than any other raw material
only a small part of the water is actually consumed
used as a medium for other processes

29. Industry canning - water is used to clean product and the containers
cool ovens
boil the product
wash away wastes

30. Industry may become part of the product
most water is recycled or returned to the natural water cycle in a drainage ditch or stream

31. Industry paper is made in water
industry draws about 40 billion gallons of water per day
water supply - major factor in location of industry

32. Industry
strong pollution control methods to recycle water rather than draw from an outside source

33. Hydroelectric plants major use of water
US leads the world in hydroelectric power
supplies only a small portion of our needs

34. Hydroelectric Plants concern is with damming of rivers
fish runs are interrupted
habitat is changed
puts wildlife in danger

35. Fish and Wildlife
the way water is handled affects the fish in the water and the wildlife around the water

36. Fish and Wildlife land wildlife, inland birds, waterfowl
different species require different types of water

37. Fish and Wildlife some fish prosper in cold mountain streams
some may prefer fast running rapids

38. Recreation boating, water skiing, fishing, sailing and swimming
Swimming pools - require
a lot of water to keep them
in compliance with
health regulations.

39. Recreation frozen water activities
ice skating, hockey, snowboarding and skiing

40. Domestic Uses cooking baths or showers carry away wastes
Each American uses more water than any other person in the world

41. Domestic Uses
In the US each person uses approximately 150 gallons of water per day
bath gallons
shower - 5 gallons per minute

42. Domestic Uses Wash clothes - 30 gallons flush the toilet - 3 gallons
water the lawn and garden, wash cars
fire protection

43. Use
How wasteful can we be and still have enough clean water to survive?