Reginald W. Herschy was formerly principal civil engineer, Department of Environment, UK and is now consultant for CNS Scientific and Engineering Services, Reading, UK. Professor Rhodes W. Fairbridge is emeritus Professor of Geology at Columbia University and is now visiting scientist at the Goddard Institute of Space Studies (NASA, NY). He has edited more that two dozen encyclopedias and authored more than three-hundred scientific publications.

'I recommend the Encyclopedia of Hydrology and Water Resources to those that need quick, authoritative information.' Robert M. Hirsch, Chief Hydrologist, United States Geological Survey 'Some discussions provide the reader with more information in a six or seven page review than a complete text devoted to the topic ... The 100 or so authors and Dr Herschy have assembled a valuable work of reference, a good starting point for many searching for information on an unfamiliar area.' John C. Rodda, Hydrological Sciences-Journal des Sciences Hydrologiques, 44:2 (1999) 'a magnum opus ... no professional firm working in this area should be without a copy in the office. The book is an essential reference work for all major civic, university and research establishment libraries.' M.J. Hamlin, Birmingham University, Circulation, 61 (May 1999) '...this Encyclopedia is recommended for professional firms, university and research establishment libraries...the authors must be congratulated for concisely bringing together such a wealth of information and for its excellent presentation. The Encyclopedia is a unique publication of such type and a welcome contribution to hydrology and water resources literature.' W.G. Strupczewski and M. Osuch, Pure and Applied Geophysics, 158 (2001)

• Foreword. Preface. Selected international journals in hydrology and water resources. Units, symbols and conversion factors. Access to and accountability of water resources. Accuracy. Accuracy of hydrodynamic approximations in hydrology: non-uniform, steady flow. Accuracy of hydrodynamic approximations in hydrology: unsteady, uniform flow. Acidic deposition: acidification of surface waters. Acid rain. Activated sludge process: historical. Activated sludge process. Africa: climate. Agroclimatology. Albedo and reflectivity. Algal growth on lakes. Alluvial valley engineering. Amazon River. Antarctic ozone hole. Antecedent precipitation. Aquifer. Aral Sea. Arid climates. Aridity indices. Arid lands. Arid zone hydrology. Asia: climate. Atmosphere. Atmospheric processes associated with water in the atmosphere. Atmospheric water vapor. Australia: climate and water resources. Australian flood studies. Bernoulli energy equation. Biosphere. Black Sea environment. Bottled water. Caspian Sea. Central America and West Indies: climate. Channelization and bank stabilization. Chezy formula. Chilgrove House well, UK. Climate and climate change. Climate change and ancient civilization. Climate change and the greenhouse effect. Climate data: sources. Climate forecasting: monthly and seasonal. Clouds (cloud seeding). Colebrook-White equation. Computer models. Conveyance. Correlation coefficient. Current metering. Cyanobacteria (blue-green algae). Dams. Dams: failure. Dams: world. Danube River: hydrology and geography. Danube River: development. Data processing in hydrology. Deltaic plains. Density for a minimum network of hydrological stations. Desalination. Desert hydrology. Desertification. Deserts. Design flood assessment. Dew. Dewpoint. Dew ponds. Drainage. Drawdown, cone of depression. Drinking water and sanitation. Drought. Drought in Western Europe, 1988-1992. Drought management. Droughts. Echo sounding. El Nino. Energy head. Entropy in environmental and water resources. Environmental priorities for development: water. Estuarine hydrology. Europe, climate: a hydrological perspective. Evaporation: measurement. Evapotranspiration. Everglades, Florida, USA. Experimental basin. Float. Flood estimation: methods for developing countries. Flood frequency analysis. Flood hazard management. Floods. Floods: largest in USA, China and the world. Flood studies for the British Isles. Flood studies worldwide. Floods: river and multi-stage channels. Floods: world's maximum observed. Florida Bay: status and restoration. Flow measurement: new technology. Flow through weirs, flumes, orifices, sluices and pipes. Flume. Fog and mist. Frequency analysis. Frost. Froude number. Gauge (gage). Gauging station. Ghyben-Herzberg theory. Global positioning system (GPS): overview. Global warming. Greenhouse effect: general. Greenhouse effect. Groundwater. Groundwater: UK. Hydroclimatology. Hydrodynamics: porous media. Hydro-ecology: PHABSIM. Hydrogeology. Hydrogeology: history in USA. Hydrological cycle. Hydrological mapping. Hydrological services. Hydrological yearbooks. Hydrologists (600 BC-AD 1900). Hydrology. Hydrology: coastal terrain. Hydrology: lakes and reservoirs. Hydrology: subsurface waters. Hydromechanics. Hydrometeorology. Hydropower and energy-related projects. Hydrosphere. Infiltration: introduction. Infiltration. International databases. International organizations involved with hydrology and water resources. International rivers. International standards in flow measurement. Irrigated land area: world. Irrigation and drainage. Karst hydrology. Kissimmee River, Florida, USA. Lakes. Lake Balaton, Hungary. Lake Chad. Lakes: effects on climate. Lakes, lake water. Lakes: largest worldwide. Land-use change. Limnology: definition. Limnology. Lough Neagh, UK. Manning formula. Maritime climate, oceanicity Maritime zones. Mathematical models. Maximum observed rainfalls Mean annual runoff: correlation with catchment characteristics. Medicinal springs. Mediterranean climate. Meteorology. Mixing. Modeling of water resource systems. Model predictions: uncertainty. Models: distributed models of catchment hydrology. Models: parameter estimation. Monsoon climates. Multi-parameter data loggers. Natural disasters. North America: climate. Okeechobee Lake, Florida, USA: human impacts, research and lake restoration. Orographic precipitation. Paleohydrology. Permafrost. Perrault, Pierre (1611-1680). Population displacement due to dam construction. Prandtl-von Karman equation. Precipitation. Precipitation distribution. Precipitation: source. Probability of a hydrological event occurring in a given time interval. Qinghaihu Lake, China. Radar: precipitation-measuring (weather) radar in Europe. Rain. Raingauge. Rain shadow: general. Rain shadow. Razim-Sinoie lake complex, Romania. Relative humidity. Remote sensing (1). Remote sensing (2). Remote sensing data: use in hydrological modeling. Reservoir capacity estimation. Reynolds number. River engineering. Rivers. River pollution prevention: historical. Sahel region: climate and hydrology. Saltwater wedge. Sand dunes. Sanitation and clean water. Satellite hydrology: present trends and outstanding needs. Savanna. Sea level: mean. Seiche. Semiarid regions. Sewage treatment: general introduction. Sewage treatment processes. Sink, sinkhole, swallow hole. Snow measurement. Snow. Snowfall and snow cover: recent variations in northern high latitudes, present status of research and relevance to the climate change problem. Soil and water management. South America. Springs. Stage-discharge relation. Storms: brief definitions. Streamflow measurement. Surfacewater yield calculation. Suspended sediment monitoring: use of acoustic Doppler current profiler. Thames Barrier. Thames, River. Thames Water Ring Main. Thiessen polygon. Trafalgar Square borehole, London, UK. Tree-rings in hydrological studies. Tree-rings: Fortingall yew tree, UK. United States Geological Survey: National Water-Use Information Program. Unit hydrograph method in UK flood studies. Unsteady flow model for computing streamflow. Urban hydrology. Velocity-area method. Water on Earth and other planets. Water agencies: national and international. WaterAid. Water allocation and use. Water availability and river water quality. Water balance. Water budget analysis. Water: categories. Water charges (UK): abstractions and discharges. Water divining (1). Water divining (2). Waterfalls. Water inventory. Water movement in unsaturated soils. Water quality for drinking: WHO guidelines. Water resources: introduction. Water resources: international. Water resources: dictionary of basic terms. Water resources: Europe. Water resources: integrated river basin management. Water resources: natural quality. Water resources: quality assessment. Water resources: surface and groundwater. Water: substance and solvent. Water table. Water treatment: potable water. Water use. Water use in the USA. Weathering. Weber number. Weir: flow measurement. World water balance. Yangtze Three Gorges Dam, China. Author index. Subject index.

Reginald W. Herschy was formerly principal civil engineer, Department of Environment, UK and is now consultant for CNS Scientific and Engineering Services, Reading, UK. Professor Rhodes W. Fairbridge is emeritus Professor of Geology at Columbia University and is now visiting scientist at the Goddard Institute of Space Studies (NASA, NY). He has edited more that two dozen encyclopedias and authored more than three-hundred scientific publications.

'I recommend the Encyclopedia of Hydrology and Water Resources to those that need quick, authoritative information.' Robert M. Hirsch, Chief Hydrologist, United States Geological Survey 'Some discussions provide the reader with more information in a six or seven page review than a complete text devoted to the topic ... The 100 or so authors and Dr Herschy have assembled a valuable work of reference, a good starting point for many searching for information on an unfamiliar area.' John C. Rodda, Hydrological Sciences-Journal des Sciences Hydrologiques, 44:2 (1999) 'a magnum opus ... no professional firm working in this area should be without a copy in the office. The book is an essential reference work for all major civic, university and research establishment libraries.' M.J. Hamlin, Birmingham University, Circulation, 61 (May 1999) '...this Encyclopedia is recommended for professional firms, university and research establishment libraries...the authors must be congratulated for concisely bringing together such a wealth of information and for its excellent presentation. The Encyclopedia is a unique publication of such type and a welcome contribution to hydrology and water resources literature.' W.G. Strupczewski and M. Osuch, Pure and Applied Geophysics, 158 (2001)

• Foreword. Preface. Selected international journals in hydrology and water resources. Units, symbols and conversion factors. Access to and accountability of water resources. Accuracy. Accuracy of hydrodynamic approximations in hydrology: non-uniform, steady flow. Accuracy of hydrodynamic approximations in hydrology: unsteady, uniform flow. Acidic deposition: acidification of surface waters. Acid rain. Activated sludge process: historical. Activated sludge process. Africa: climate. Agroclimatology. Albedo and reflectivity. Algal growth on lakes. Alluvial valley engineering. Amazon River. Antarctic ozone hole. Antecedent precipitation. Aquifer. Aral Sea. Arid climates. Aridity indices. Arid lands. Arid zone hydrology. Asia: climate. Atmosphere. Atmospheric processes associated with water in the atmosphere. Atmospheric water vapor. Australia: climate and water resources. Australian flood studies. Bernoulli energy equation. Biosphere. Black Sea environment. Bottled water. Caspian Sea. Central America and West Indies: climate. Channelization and bank stabilization. Chezy formula. Chilgrove House well, UK. Climate and climate change. Climate change and ancient civilization. Climate change and the greenhouse effect. Climate data: sources. Climate forecasting: monthly and seasonal. Clouds (cloud seeding). Colebrook-White equation. Computer models. Conveyance. Correlation coefficient. Current metering. Cyanobacteria (blue-green algae). Dams. Dams: failure. Dams: world. Danube River: hydrology and geography. Danube River: development. Data processing in hydrology. Deltaic plains. Density for a minimum network of hydrological stations. Desalination. Desert hydrology. Desertification. Deserts. Design flood assessment. Dew. Dewpoint. Dew ponds. Drainage. Drawdown, cone of depression. Drinking water and sanitation. Drought. Drought in Western Europe, 1988-1992. Drought management. Droughts. Echo sounding. El Nino. Energy head. Entropy in environmental and water resources. Environmental priorities for development: water. Estuarine hydrology. Europe, climate: a hydrological perspective. Evaporation: measurement. Evapotranspiration. Everglades, Florida, USA. Experimental basin. Float. Flood estimation: methods for developing countries. Flood frequency analysis. Flood hazard management. Floods. Floods: largest in USA, China and the world. Flood studies for the British Isles. Flood studies worldwide. Floods: river and multi-stage channels. Floods: world's maximum observed. Florida Bay: status and restoration. Flow measurement: new technology. Flow through weirs, flumes, orifices, sluices and pipes. Flume. Fog and mist. Frequency analysis. Frost. Froude number. Gauge (gage). Gauging station. Ghyben-Herzberg theory. Global positioning system (GPS): overview. Global warming. Greenhouse effect: general. Greenhouse effect. Groundwater. Groundwater: UK. Hydroclimatology. Hydrodynamics: porous media. Hydro-ecology: PHABSIM. Hydrogeology. Hydrogeology: history in USA. Hydrological cycle. Hydrological mapping. Hydrological services. Hydrological yearbooks. Hydrologists (600 BC-AD 1900). Hydrology. Hydrology: coastal terrain. Hydrology: lakes and reservoirs. Hydrology: subsurface waters. Hydromechanics. Hydrometeorology. Hydropower and energy-related projects. Hydrosphere. Infiltration: introduction. Infiltration. International databases. International organizations involved with hydrology and water resources. International rivers. International standards in flow measurement. Irrigated land area: world. Irrigation and drainage. Karst hydrology. Kissimmee River, Florida, USA. Lakes. Lake Balaton, Hungary. Lake Chad. Lakes: effects on climate. Lakes, lake water. Lakes: largest worldwide. Land-use change. Limnology: definition. Limnology. Lough Neagh, UK. Manning formula. Maritime climate, oceanicity Maritime zones. Mathematical models. Maximum observed rainfalls Mean annual runoff: correlation with catchment characteristics. Medicinal springs. Mediterranean climate. Meteorology. Mixing. Modeling of water resource systems. Model predictions: uncertainty. Models: distributed models of catchment hydrology. Models: parameter estimation. Monsoon climates. Multi-parameter data loggers. Natural disasters. North America: climate. Okeechobee Lake, Florida, USA: human impacts, research and lake restoration. Orographic precipitation. Paleohydrology. Permafrost. Perrault, Pierre (1611-1680). Population displacement due to dam construction. Prandtl-von Karman equation. Precipitation. Precipitation distribution. Precipitation: source. Probability of a hydrological event occurring in a given time interval. Qinghaihu Lake, China. Radar: precipitation-measuring (weather) radar in Europe. Rain. Raingauge. Rain shadow: general. Rain shadow. Razim-Sinoie lake complex, Romania. Relative humidity. Remote sensing (1). Remote sensing (2). Remote sensing data: use in hydrological modeling. Reservoir capacity estimation. Reynolds number. River engineering. Rivers. River pollution prevention: historical. Sahel region: climate and hydrology. Saltwater wedge. Sand dunes. Sanitation and clean water. Satellite hydrology: present trends and outstanding needs. Savanna. Sea level: mean. Seiche. Semiarid regions. Sewage treatment: general introduction. Sewage treatment processes. Sink, sinkhole, swallow hole. Snow measurement. Snow. Snowfall and snow cover: recent variations in northern high latitudes, present status of research and relevance to the climate change problem. Soil and water management. South America. Springs. Stage-discharge relation. Storms: brief definitions. Streamflow measurement. Surfacewater yield calculation. Suspended sediment monitoring: use of acoustic Doppler current profiler. Thames Barrier. Thames, River. Thames Water Ring Main. Thiessen polygon. Trafalgar Square borehole, London, UK. Tree-rings in hydrological studies. Tree-rings: Fortingall yew tree, UK. United States Geological Survey: National Water-Use Information Program. Unit hydrograph method in UK flood studies. Unsteady flow model for computing streamflow. Urban hydrology. Velocity-area method. Water on Earth and other planets. Water agencies: national and international. WaterAid. Water allocation and use. Water availability and river water quality. Water balance. Water budget analysis. Water: categories. Water charges (UK): abstractions and discharges. Water divining (1). Water divining (2). Waterfalls. Water inventory. Water movement in unsaturated soils. Water quality for drinking: WHO guidelines. Water resources: introduction. Water resources: international. Water resources: dictionary of basic terms. Water resources: Europe. Water resources: integrated river basin management. Water resources: natural quality. Water resources: quality assessment. Water resources: surface and groundwater. Water: substance and solvent. Water table. Water treatment: potable water. Water use. Water use in the USA. Weathering. Weber number. Weir: flow measurement. World water balance. Yangtze Three Gorges Dam, China. Author index. Subject index.

Reginald W. Herschy was formerly principal civil engineer, Department of Environment, UK and is now consultant for CNS Scientific and Engineering Services, Reading, UK. Professor Rhodes W. Fairbridge is emeritus Professor of Geology at Columbia University and is now visiting scientist at the Goddard Institute of Space Studies (NASA, NY). He has edited more that two dozen encyclopedias and authored more than three-hundred scientific publications.

'I recommend the Encyclopedia of Hydrology and Water Resources to those that need quick, authoritative information.' Robert M. Hirsch, Chief Hydrologist, United States Geological Survey 'Some discussions provide the reader with more information in a six or seven page review than a complete text devoted to the topic ... The 100 or so authors and Dr Herschy have assembled a valuable work of reference, a good starting point for many searching for information on an unfamiliar area.' John C. Rodda, Hydrological Sciences-Journal des Sciences Hydrologiques, 44:2 (1999) 'a magnum opus ... no professional firm working in this area should be without a copy in the office. The book is an essential reference work for all major civic, university and research establishment libraries.' M.J. Hamlin, Birmingham University, Circulation, 61 (May 1999) '...this Encyclopedia is recommended for professional firms, university and research establishment libraries...the authors must be congratulated for concisely bringing together such a wealth of information and for its excellent presentation. The Encyclopedia is a unique publication of such type and a welcome contribution to hydrology and water resources literature.' W.G. Strupczewski and M. Osuch, Pure and Applied Geophysics, 158 (2001)

• Foreword. Preface. Selected international journals in hydrology and water resources. Units, symbols and conversion factors. Access to and accountability of water resources. Accuracy. Accuracy of hydrodynamic approximations in hydrology: non-uniform, steady flow. Accuracy of hydrodynamic approximations in hydrology: unsteady, uniform flow. Acidic deposition: acidification of surface waters. Acid rain. Activated sludge process: historical. Activated sludge process. Africa: climate. Agroclimatology. Albedo and reflectivity. Algal growth on lakes. Alluvial valley engineering. Amazon River. Antarctic ozone hole. Antecedent precipitation. Aquifer. Aral Sea. Arid climates. Aridity indices. Arid lands. Arid zone hydrology. Asia: climate. Atmosphere. Atmospheric processes associated with water in the atmosphere. Atmospheric water vapor. Australia: climate and water resources. Australian flood studies. Bernoulli energy equation. Biosphere. Black Sea environment. Bottled water. Caspian Sea. Central America and West Indies: climate. Channelization and bank stabilization. Chezy formula. Chilgrove House well, UK. Climate and climate change. Climate change and ancient civilization. Climate change and the greenhouse effect. Climate data: sources. Climate forecasting: monthly and seasonal. Clouds (cloud seeding). Colebrook-White equation. Computer models. Conveyance. Correlation coefficient. Current metering. Cyanobacteria (blue-green algae). Dams. Dams: failure. Dams: world. Danube River: hydrology and geography. Danube River: development. Data processing in hydrology. Deltaic plains. Density for a minimum network of hydrological stations. Desalination. Desert hydrology. Desertification. Deserts. Design flood assessment. Dew. Dewpoint. Dew ponds. Drainage. Drawdown, cone of depression. Drinking water and sanitation. Drought. Drought in Western Europe, 1988-1992. Drought management. Droughts. Echo sounding. El Nino. Energy head. Entropy in environmental and water resources. Environmental priorities for development: water. Estuarine hydrology. Europe, climate: a hydrological perspective. Evaporation: measurement. Evapotranspiration. Everglades, Florida, USA. Experimental basin. Float. Flood estimation: methods for developing countries. Flood frequency analysis. Flood hazard management. Floods. Floods: largest in USA, China and the world. Flood studies for the British Isles. Flood studies worldwide. Floods: river and multi-stage channels. Floods: world's maximum observed. Florida Bay: status and restoration. Flow measurement: new technology. Flow through weirs, flumes, orifices, sluices and pipes. Flume. Fog and mist. Frequency analysis. Frost. Froude number. Gauge (gage). Gauging station. Ghyben-Herzberg theory. Global positioning system (GPS): overview. Global warming. Greenhouse effect: general. Greenhouse effect. Groundwater. Groundwater: UK. Hydroclimatology. Hydrodynamics: porous media. Hydro-ecology: PHABSIM. Hydrogeology. Hydrogeology: history in USA. Hydrological cycle. Hydrological mapping. Hydrological services. Hydrological yearbooks. Hydrologists (600 BC-AD 1900). Hydrology. Hydrology: coastal terrain. Hydrology: lakes and reservoirs. Hydrology: subsurface waters. Hydromechanics. Hydrometeorology. Hydropower and energy-related projects. Hydrosphere. Infiltration: introduction. Infiltration. International databases. International organizations involved with hydrology and water resources. International rivers. International standards in flow measurement. Irrigated land area: world. Irrigation and drainage. Karst hydrology. Kissimmee River, Florida, USA. Lakes. Lake Balaton, Hungary. Lake Chad. Lakes: effects on climate. Lakes, lake water. Lakes: largest worldwide. Land-use change. Limnology: definition. Limnology. Lough Neagh, UK. Manning formula. Maritime climate, oceanicity Maritime zones. Mathematical models. Maximum observed rainfalls Mean annual runoff: correlation with catchment characteristics. Medicinal springs. Mediterranean climate. Meteorology. Mixing. Modeling of water resource systems. Model predictions: uncertainty. Models: distributed models of catchment hydrology. Models: parameter estimation. Monsoon climates. Multi-parameter data loggers. Natural disasters. North America: climate. Okeechobee Lake, Florida, USA: human impacts, research and lake restoration. Orographic precipitation. Paleohydrology. Permafrost. Perrault, Pierre (1611-1680). Population displacement due to dam construction. Prandtl-von Karman equation. Precipitation. Precipitation distribution. Precipitation: source. Probability of a hydrological event occurring in a given time interval. Qinghaihu Lake, China. Radar: precipitation-measuring (weather) radar in Europe. Rain. Raingauge. Rain shadow: general. Rain shadow. Razim-Sinoie lake complex, Romania. Relative humidity. Remote sensing (1). Remote sensing (2). Remote sensing data: use in hydrological modeling. Reservoir capacity estimation. Reynolds number. River engineering. Rivers. River pollution prevention: historical. Sahel region: climate and hydrology. Saltwater wedge. Sand dunes. Sanitation and clean water. Satellite hydrology: present trends and outstanding needs. Savanna. Sea level: mean. Seiche. Semiarid regions. Sewage treatment: general introduction. Sewage treatment processes. Sink, sinkhole, swallow hole. Snow measurement. Snow. Snowfall and snow cover: recent variations in northern high latitudes, present status of research and relevance to the climate change problem. Soil and water management. South America. Springs. Stage-discharge relation. Storms: brief definitions. Streamflow measurement. Surfacewater yield calculation. Suspended sediment monitoring: use of acoustic Doppler current profiler. Thames Barrier. Thames, River. Thames Water Ring Main. Thiessen polygon. Trafalgar Square borehole, London, UK. Tree-rings in hydrological studies. Tree-rings: Fortingall yew tree, UK. United States Geological Survey: National Water-Use Information Program. Unit hydrograph method in UK flood studies. Unsteady flow model for computing streamflow. Urban hydrology. Velocity-area method. Water on Earth and other planets. Water agencies: national and international. WaterAid. Water allocation and use. Water availability and river water quality. Water balance. Water budget analysis. Water: categories. Water charges (UK): abstractions and discharges. Water divining (1). Water divining (2). Waterfalls. Water inventory. Water movement in unsaturated soils. Water quality for drinking: WHO guidelines. Water resources: introduction. Water resources: international. Water resources: dictionary of basic terms. Water resources: Europe. Water resources: integrated river basin management. Water resources: natural quality. Water resources: quality assessment. Water resources: surface and groundwater. Water: substance and solvent. Water table. Water treatment: potable water. Water use. Water use in the USA. Weathering. Weber number. Weir: flow measurement. World water balance. Yangtze Three Gorges Dam, China. Author index. Subject index.