Degradation of Water Sources

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Presentation transcript:

Degradation of Water Sources Guillermo Q Tabios III Associate Professor of Civil Engineering and Research Fellow of National Hydraulic Research Center University of the Philippines, Diliman, Quezon City 7th National Educators’ Assembly in Environmental Protection and Management Cagayan de Oro City, October 10-11, 2002

Herbicide Application Urban Runoff Abandoned Mine Tailings Herbicide Application Industrial Lagoons Erosion Municipal Treatment Plant Agricultural Runoff Impermeable Bedrock Sanitary Landfill Salt Water Municipal Well Irrigation Private Hazardous waste Lake Sea Water Intrusion Unconfined Aquifer Fresh Water Confined Aquifer

Payatas Open Dumpsite Novaliches Reservoir (La Mesa Damsite)

freshwater over freshwater-saline water interface land surface groundwater table sea freshwater seabed freshwater-saline water interface saline water freshwater over freshwater-saline water interface

freshwater-saline water interface land surface groundwater table way below due to overpumping sea freshwater-saline water interface (way inland) seabed freshwater saline water freshwater-saline water interface way inland due to groundwater overpumping