geology : GROUNDWATER

Jun 28th, 2015
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GROUNDWATER : “a hidden reserve” -drinking water for more 50% of all people - 40% of irrigation water - important for livestock & industry -an overused resource resulting in: - water shortages - land subsidence - Contamination

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LECTURE 8GROUNDWATERa hidden reserve-drinking water for more 50% of all people- 40% of irrigation water- important for livestock & industry -an overused resource resulting in:- water shortages- land subsidence- Contamination-Underground lakes and rivers are rare-Most underground water exists in spaces between grains(in pore spaces)-geological important erosional agentOrigin of GroundwaterGlaciers and ice caps2.14Groundwater0.61Surface water0.009Soil moisture0.005Atmosphere0.001Groundwater is the largest source of readily available freshwater. It has: (1) less bacteria due o the natural filtering effect of rocks(2) widespread(3) constant temperatureGroundwater is all water contained in the spaces within bedrock and regolith.Hydrologic CycleInflow =OutflowPr

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