Water as a Resource Water is Life What are you doing to conserve or protect water? Water Facts • • • • 70% of the Earth is water 97.5% of the water is salt water 2.5% is fresh water 30.6% is ground water – Canada has about 20% of the worlds ground water • If on the surface the ground water would cover the entire surface of the Earth to a depth of 120m Water Use in Your Home 1. Speculate on why Canadians use 210 Litres more water than Europeans on a daily basis. 2. What can we do to lower our water consumption? Water Usage Water Usage 1. Withdrawal Water • • • Water taken from its natural source and returned to the source but not in the same condition. Example is a thermal-electrical plant, agricultural and mining activities, consumed water Water is returned to the source but changed Water Usage 2. In stream Water • Not removed from its source to be used • Examples are a hydro-electric generating plant • Water passes through the plant and returned in the same condition • Other examples are waste disposal and fisheries Water Bodies and Systems • River systems are grouped together by the bodies of water they flow into called drainage basins. • Remember what flows downhill Water Diversions • The movement of water beyond its normal drainage basin • Can cause a disruption of the normal ecosystem • Organisms not natural to an ecosystem may be introduced RED RIVER SUB-DRAINAGE BASIN Run-Off and Pollution • Industrial waste, human waste being dumped into the water supply • Chemicals from fertilizer moving into the water supply What to do? What is your responsibility?