q2006byTaylor&FrancisGroup,LLC q2006byTaylor&FrancisGroup,LLC q2006byTaylor&FrancisGroup,LLC Preface “JustdoanInternetsearch.”“It’sontheInternet.”Howoftenhavewesaidorbeentoldthatwecouldfinditonthe Internet.ThisthirdeditionofTheWaterEncyclopedia:HydrologicDataandInternetResourcesstartedfromapremise thatmostoftheinformationprovidedwithinthispublicationcouldbefoundontheInternet.Asourteamofcontributing authorsstartedreviewingeachsectionwithineachchapter,itsoonbecameapparentthatyoucannotalwaysfinditonthe internet.Thiseditionrepresentsmanyhoursofefforttoidentifythemostcurrentinformationonawiderangeofwater- related topics whether itcan be found on the internet orin othersources. TheEncyclopediahasretainedmanyoftheelementsofthepreviouseditionsbuthasalsobeenexpandedtoreflectthe many changes within the environmental industry as well as the current and topical water-related matters of the last decade. Prepared by scientists and engineers, this publication is intended to serve as a valuable resource to all professionalsdealingwithwater-relatedissuesaswellasthegeneralpublic.Thematerialpresentedhasbeenfootnoted toprovidetheuserwiththeopportunitytoreturntotheoriginalsourcematerialforadditionalresearch.Wherepossible, anInternet URL addressis providedtoguide the user tothe appropriate source. The third edition of the Encyclopedia has been significantly expanded beyond the previous edition. The first two chapters of this edition are new and discuss data management and international data collection. Data management concepts are presented to review the use of databases, geographic information systems (GIS), data reporting and metadata. Data repositories and availability vary around the world and range in ease of access and usability. The international data collection provides some direction on potential data sources in less developed areas as well as case histories of actual project work andInternetsourcesfor international water-related data. This edition contains more than 1100 tables and 500 figures providing data related to weather, surface water, groundwater, water use, water quality, waste water, pollution, and water resource management. The pollution chapter alone has grown to contain some 450 plus tables and figures. Wastewater, previously included within the pollution chapter,ispresentedasastand-alonechaptertofacilitateuseofthisreference.Achapterofusefulconversionfactorsand constantsconcludesthis edition. Whetheryouarelookingforaspecificpieceofinformationorexploringoneormoreofthemanytopicsrelatedto water, this edition provides itsuserswith atremendouswealth ofdata whetheron the Internetor not. q2006byTaylor&FrancisGroup,LLC Acknowledgments Wewanttoextendourthanksandappreciationtothemanyindividuals,publishers,andorganizationsthathavemade thisthirdeditionareality.Withouttheirtime,cooperation,collaboration,thisworkwouldnothavebeenpossible.Most importantly,thesupportandaccesstoresourcesforthemanagementofthiscompilationprovidedbyARCADISG&M was invaluable, andtheir on-going supportand encouragement toundertaketheseefforts are deeplyappreciated. Anumberofindividualcontributorswereinvolvedincompilingtherelevantinformationforeachofthechaptersand they are identified at the start of their chapters. Our thanks and appreciation to you and your families for the time committed to completing this task. Behind the scenes and the backbone of keeping everything organized, we want to extendaspecialthankstoChrisWordenandCarlaGerstnerfortheirencouragement,patience,andtheoccasionalstern word.Additionally,wewanttoacknowledgeBarbaraKellyandAmandaFierrofortheireffortsinpreparingmaterials for the manuscript. q2006byTaylor&FrancisGroup,LLC The Editors PedroFierro,Jr.isahydrogeologistandassociatevicepresidentwithARCADISG&M,Inc.,whereheisinvolved withawidevarietyofenvironmentalassessmentsandremediationprograms.Hehasbeenresponsibleforthedirectionof several hundred sites addressing environmental issues. Fierro has addressed various audiences on topics ranging from sampling methodologies, regulatory compliance, site assessment techniques, liability management, and remediation technologies. Fierro received his bachelor’s degree in geology from the University of Rochester, Rochester, New York and his master’s degree in geology with an emphasis on groundwater studies from the University of Kentucky. He currently holds geological professional licenses/registrations in Alabama, Florida, Georgia, Kentucky, Pennsylvania, and Tennessee.Heisacertifiedgroundwaterprofessionalandacertifiedprofessionalgeologist.Hewasacontributingauthor toIn SituTreatment Technology. Evan K. Nyer is a senior vice president with ARCADIS G&M, Inc., where he is responsible for maintaining and expandingthecompany’stechnicalexpertiseingeology/hydrogeology,engineering,fateandtransport,andremediation technologies. He has been active in the development of new treatment technologies for many years. He has been responsible for the strategies, technical designs and installations of more than 400 groundwater and soil remediation systemsatcontaminatedsitesthroughouttheUnitedStates.Nyeralsolectures,providesexperttestimony,andservesas the public spokesperson for onetechnically complicatedsite. NyerreceivedhisgraduatedegreeinenvironmentalengineeringfromPurdueUniversityandhasauthoredfivebooks: Practical Techniques for Groundwater and Soil Remediation, published by Lewis Publishers, Inc.; Groundwater Treatment Technology, first and second edition, published by Van Nostrand Reinhold; Groundwater and Soil Remediation,andInSituTreatmentTechnology(nowinitssecondedition)publishedbyCRCPress;andisco-authorof Bioremediation, published by the American Academy of Environmental Engineers. Nyer is a regular contributor to GroundwaterMonitoringandRemediationhavinghadhisowncolumn“TreatmentTechnology”intheperiodicalforthe past 20 years. q2006byTaylor&FrancisGroup,LLC