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Published byDenis Reynolds Modified over 9 years ago
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Water Resources
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What is a Watershed ? Area of land that sheds (moves ) water from the highest to the lowest point.
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River Systems
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Texas Rivers
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Austin’s Colorado River
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Lake Travis
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Lake Austin
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Lady Bird Lake
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Watershed Map City of Austin What watershed Are we in? Walnut Creek
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Groundwater Cenote in Mexico
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Groundwater Water found in the spaces between soil particles and cracks in rocks underground A natural resource that is used for drinking, industry and growing crops Examples: aquifers and springs
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Groundwater Flow
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Water Table
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Porosity and Permeability How fast water can flow through a material Depends on the particle size. The larger the particle size the more permeable the material.
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Porosity and Permeability
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Impermeable Layer A layer of material which water does not pass; also known as a confining layer Examples: Clay and shale(natural), concrete (man-made)
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Impervious Cover
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Land Use Changes effect the water cycle
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Aquifer An underground geological formation to store and yield water
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Aquifer
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The Hydrologic Cycle and Groundwater
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Edwards Aquifer
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Aquifer San Antonio 1895
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Ogallala Aquifer
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Spring
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Barton Springs Pool
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Barton Springs
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Recharge Zone Layer below the surface that has holes where water can go through to the Aquifer. Example: Karst Limestone
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Features of Karst Terrain
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Karst Terrain Landscape shaped by the dissolution of soluble rock San Salvador, Bahamas Karst Landscape France
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The Environmental Implications of Karst Terrain
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Cave Formation Animation of Cave Formation Innerspace Cavern Georgetown, Texas
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Cave Deposition Natural Bridge Cavern New Braunfels, Texas Carlsbad Cavern New Mexico Dissolved calcium carbonate is precipitated creating cave formations
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Cave Features
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How much of the Earth’s water supply is available to drink? Less than 1 %!
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