Chapter 13 Water: A Limited Resource. Importance of Water Cooking & washing Agriculture ...
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Transcript of Chapter 13 Water: A Limited Resource. Importance of Water Cooking & washing Agriculture ...
Chapter 13Chapter 13Water: A Limited ResourceWater: A Limited Resource
Importance of WaterImportance of Water
Cooking & washingCooking & washing AgricultureAgriculture ManufacturingManufacturing MiningMining Energy productionEnergy production Waste disposalWaste disposal Use of freshwater Use of freshwater
is increasingis increasing
Properties of WaterProperties of Water
H bonds
Distribution of Water on Distribution of Water on EarthEarth
Freshwater AquiferFreshwater Aquifer
WatershedWatershed A watershed is the area of land A watershed is the area of land
where all of the water that is under it where all of the water that is under it or drains off of it goes into the same or drains off of it goes into the same placeplace
Too Much WaterToo Much Water
FloodingFlooding Both natural and human-inducedBoth natural and human-induced
Modern floods are highly destructiveModern floods are highly destructive Humans have removed water-absorbing Humans have removed water-absorbing
plant cover from soil-drained wetlandsplant cover from soil-drained wetlands building on building on floodplainsfloodplains
Urban vs. Pre-Urban Urban vs. Pre-Urban FloodplainsFloodplains
Floods of Summer 2008Floods of Summer 2008
Too Little WaterToo Little Water
ProblemsProblems DroughtDrought Overdrawing water Overdrawing water
for irrigation for irrigation Aquifer depletionAquifer depletion
SubsidenceSubsidence SinkholesSinkholes
Too Little WaterToo Little Water
Problems (continued)Problems (continued) Saltwater IntrusionSaltwater Intrusion
Water Problems In US and Water Problems In US and CanadaCanada
US has a US has a plentiful plentiful supply of supply of freshwaterfreshwater
Many areas Many areas have a have a severe severe shortagesshortages
Water shortages in West and Water shortages in West and
SouthwestSouthwest
Water Problems In US and Water Problems In US and CanadaCanada
Water Problems in US and Water Problems in US and Canada- Surface WaterCanada- Surface Water
Mono Lake (Eastern CA)Mono Lake (Eastern CA)
Colorado River BasinColorado River Basin
Water Problems in US and Water Problems in US and Canada—GroundwaterCanada—Groundwater Aquifer DepletionAquifer Depletion
Global Water ProblemsGlobal Water Problems
Amount of freshwater on planet CAN Amount of freshwater on planet CAN meet human needsmeet human needs BUT, it is unevenly distributed BUT, it is unevenly distributed Problems:Problems:
Climate ChangeClimate Change Drinking WaterDrinking Water Population GrowthPopulation Growth Sharing Water Resources Among CountriesSharing Water Resources Among Countries
Global Water ProblemsGlobal Water Problems
Drinking Water ProblemsDrinking Water Problems Many developing countries have Many developing countries have
insufficient water to meet drinking and insufficient water to meet drinking and household needshousehold needs
Population GrowthPopulation Growth Increase in population means __________Increase in population means __________ Limits drinking water availableLimits drinking water available Limits water available for agriculture Limits water available for agriculture
(food)(food)
Sharing Water Resources Among Sharing Water Resources Among CountriesCountries Rhine River Basin Rhine River Basin
Potentially Volatile International Water Potentially Volatile International Water SituationsSituations Jordan RiverJordan River Nile RiverNile River
Global Water ProblemsGlobal Water Problems
Water ManagementWater Management
Main Goal: Provide sustainable Main Goal: Provide sustainable supply of high-quality watersupply of high-quality water1.1. Dams and ReservoirsDams and Reservoirs
2.2. Water Diversion ProjectsWater Diversion Projects
3.3. DesalinizationDesalinization
Dams and ReservoirsDams and Reservoirs
Benefits:Benefits: year-round supply year-round supply
of waterof water ElectricityElectricity Recreational Recreational
activitiesactivities DisadvantagesDisadvantages
Alter the ecosystemAlter the ecosystem Reduce sediment Reduce sediment
loadloadAmazon Watch
Dams and ReservoirsDams and Reservoirs
Glen Canyon DamGlen Canyon Dam Regulated flow has changed ecosystemRegulated flow has changed ecosystem
Dams and ReservoirsDams and Reservoirs
Water Diversion ProjectsWater Diversion Projects
Water ConservationWater Conservation
1.1. Reducing Agricultural Water WasteReducing Agricultural Water Waste
2.2. Reducing Industrial Water WasteReducing Industrial Water Waste
3.3. Reducing Municipal Water WasteReducing Municipal Water Waste