hha_jan5_introduction

hha_jan5_introduction - Groundwater in the Hydrologic Cycle...

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1 Hydrogeology and Human Affairs Today: •What is groundwater? •Why is water such an important resource? •Class logistics Groundwater in the Hydrologic Cycle Groundwater contains most of the available global supply of fresh water. 2.15 0.65 Oceans Ice 97.2 Streams and Lakes (0.009%) Groundwater (0.61%) Soil Moisture (0.005%) Atmosphere (0.001%) Groundwater Role in Geology • oil and gas resources • hydrothermal circulation and deposits • mineral resources • diagenesis and metamorphism • fault movement and earthquakes Groundwater and Ecosystems Groundwater quantity and quality affects: Streams Lakes Springs Estuaries Coastal waters Groundwater and Humans • Plenty of water, but often not distributed when and where it is needed. • Natural or man-made contaminants can make water unusable Groundwater Related Hazards: sinkholes and subsidence flooding
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2 Total U.S. Water Use (surface and ground water) Major Users: Agriculture Industrial Uses Industrial Uses (including mine dewatering)
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hha_jan5_introduction - Groundwater in the Hydrologic Cycle...

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