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Physical GeographySurface and Ground Water
Lecture Outline 30
Where is the water on earth?
Water Cycle
Pore Spaces
Fractures in Bedrock
What is an aquifer? Rock or sediment that can
HOLD And
TRANSMIT Significant amounts of water
What makes a good aquifer?Porosity
How much room is there for water?
Percentage of pore spaces
Permeability
How well connected are the spaces or cracks?
How easily can water flow through them?
Filtering Capacities
Water Table
Recharge and Discharge
Pumping Well
Groundwater Contaminant Sources
Dead Cow!
“dead cow”
Paths of Groundwater Contamination
Agriculture
Golf Courses and Lawns
Roads
Caves Created by Groundwater
Sink hole
Stream Erosion Dissolving Abrasion
Stream Polish by Abrading
Pothole
Suspended Load
Bottom Load
The Path of a Stream
Base Level
Upper Course Black Canyon of the Gunnison NP
DowncuttingYellowstone
Features in Upper Course
Middle Course
Meander
Deposition along the inside meander
Erosion in the Middle CourseThe Cut Bank
Deposition – Inside Meander
Meander Migration and Formation of Oxbow
Meander migrating downstream
Oxbow in Yellowstone
Natural Levees
Rejuvenation
Lower Course:A stream enters the sea
Mississippi River Delta
The drainage basin, or land area that drains into a particular water body
What is a watershed?
Mississippi River Watershed