Water Resources

• WATER • One of the most abundant substances
• Earth’s surface = 71% water (most of which are oceans)
• 97.5% of water is in the ocean
• remaining 2.5% is freshwater in the form of ice
• 2.1% glaciers in Greenland and vast ice sheets in Antarctic
• 0.4% fresh water that humans can use
• Availability of water

  • 96% of liquid freshwater is found underground

  • remaining is found in the surface and air
• Types of water on Earth

  • Saltwater

  • Glaciers and icecaps

  • Freshwater

  • Rivers

  • Lakes

  • Stream
• Freshwater Distribution

  1. Surface
  2. Ground
• Surface Water (about 0.3%)
• Ground Water (96%
• Surface Water (about 0.3%)

  -includes most of the bodies of water found on land

  -like lakes, ponds, streams, reservoirs, rivers, and even wetlands with accumulated freshwater
• Ground Water (96%)

  • occurs as a liquid resource that is dispersed through numerous holes, pores, fractures and cavities in bodies of rock or sedimen
• SMALL SCALE HUMAN ACTIVITIES

  1. improper waste disposal
  2. irresponsible use of water
  3. informal settlement
• LARGE SCALE HUMAN ACTIVITIES

  • Agricultural Development
  • tilling or preparing the land
  • irrigation and use of agricultural chemical
  • Urban and agricultural development
  • Mining