Chapter 11 NotesChapter 11 NotesWater ResourcesWater Resources

Water DistributionWater Distribution• Salt water – 97% Salt water – 97% • Fresh water – 3% Fresh water – 3% (Icecaps & glaciers – 77%(Icecaps & glaciers – 77%• Groundwater – 22%; other – 1%)Groundwater – 22%; other – 1%)• Freshwater is considered to be a Freshwater is considered to be a

limited resource because it makes up a limited resource because it makes up a very small percentage of water on very small percentage of water on EarthEarth

Surface WaterSurface Water• Fresh water on Earth’s land surfaceFresh water on Earth’s land surface• Found in lakes, rivers, streams, and Found in lakes, rivers, streams, and

wetlandswetlands• Pg 270, identify which watershed and Pg 270, identify which watershed and

tributary we are a part of tributary we are a part of • Watershed – MississippiWatershed – Mississippi• Tributary – Tennessee River Tributary – Tennessee River

GroundwaterGroundwater• Water stored beneath the Earth’s Water stored beneath the Earth’s

surface in sediment and rock surface in sediment and rock formationsformations

• Water table – is the underground Water table – is the underground depth at which point the ground is depth at which point the ground is totally saturated with watertotally saturated with water

• Aquifer – an underground formation Aquifer – an underground formation that contains groundwaterthat contains groundwater

Porosity vs. PermeabilityPorosity vs. Permeability• Porosity – amount of space between Porosity – amount of space between

the particles that make up a rockthe particles that make up a rock• Permeability – amount of water that Permeability – amount of water that

a rock or soil can holda rock or soil can hold• Permeable – water can flow (gravel)Permeable – water can flow (gravel)• Impermeable – water cannot flow Impermeable – water cannot flow

(clay,granite)(clay,granite)

UnicefUnicef• United Nations International United Nations International

Children's Emergency Fund Children's Emergency Fund

• https://www.youtube.com/watch?https://www.youtube.com/watch?v=dPWr6Eg_dC4v=dPWr6Eg_dC4