Week 8, Groundwater and Surface water
Week 8, Groundwater and Surface water ENVS 101 004
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This 2 page Class Notes was uploaded by Bianca Notetaker on Saturday October 24, 2015. The Class Notes belongs to ENVS 101 004 at University of New Mexico taught by Priewisch in Summer 2015. Since its upload, it has received 13 views. For similar materials see The Blue Planet in Environmental Science at University of New Mexico.
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Date Created: 10/24/15
10242015 OneNote Online Chemistry of groundwater Tuesday October 6 2015 949 AM Groundwater o Groundwater dissolves rockforming minerals therefore composition varies from place to place 0 Watermineral reaction happens because of groundwater moving very slowly along long paths with warmer temperatures 0 Common elements dissolved are chlorides sulfate bicarbonates of calcium magnesium sodium and potassium o Arsenic occurs in volcanic and sedimentary rocks Hard and soft water 0 Hard water High concentrations of dissolved ions mostly calcium and magnesium React with soap and laundry detergent resulting in no foam Clogs pipes white stuff on your shower head Precipitates minerals when water evaporates Become coated until one point water cannot flow through 0 Soft water Artificially produced from hard water by removing hard elements calcium magnesium quotsofteningquot the water More reactive corroding pipes Lead copper and other metals can be found in the water Groundwater and landscapes o Karst soluble rocks such as limestone interact with water resulting in dissolution cracks in limestone can be widened by water or groundwater Can eventually form caves in limestone Voids can become large enough to be expressed in the surface sinkholes Eventually most of the soluble layer is dissolved entirely Water and society 0 A reliable water source is critical for human survival health industry agricultureenvironmental services etc 0 Water Is in danger all over the world in terms of quality and quantity 0 Where does our water go Crops and irrigation 75 Industry demands 20 Domestic use 5 Surface water diversions and withdrawals 0 One common technique is to converge water from rivers very often these rivers seep into lakes this may mean full lakes could run dry Surface water pollution 0 Not just divergent and withdrawn there are different sources where surface water pollution comes from mines that aren39t operations are a huge contributor water collects residue then flows into nearby streams polluting bigger and bigger bodies of water Thermal release of heated water into nearby streams harmful for pollution aquatic organisms and ecosystems Leaking a lot of landfills basically dump or garbage these areas leak landfills and end up in out ground water httpsonenoteofficeappsivecomoonenoteframeastFiSDE50F6024D8D962E0381ampHemuampC5810SN2SKYWACWSHIampuienUSamprs 12 10242015 Logging Sewage discharge Algal bloom httpsonenoteofficeappsivecomoonenoteframeaspxFiSDE50F6024D8D962EO381ampHemuampC5810SNZSKYWACWSHIampuienUSamprs OneNote Online a lot of undesirable sediment ends up in streams this is harmful to the fish very common pipes that go straight into the oceans rivers andlakes excess of plant nutrients from fertilizers that come from agriculture Growth of algae plankton and aquatic weeds becomes out of control Takes up so much oxygen from water that many organisms die from oxygen depletion 22