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SAMSAMWATER
SamSamWater provides information, advice & tools for water projects in developing countries. Safe and reliable water for all, together we canrealise it!
SAMSAMWATER
Welcome to the SamSamWater Rainwater Harvesting Tool. Rainwater harvesting is an easy way to collect water during the rainy season and store it for use during the dry season. Using this tool you can easily determine the optimum size of your rainwater harvesting reservoir. There is also an Android App of the Rainwater Harvesting Toolavailable.
WATER FROM ROADS
ii Technical handbooks in this series : Titles Contents 1 Water for rural communities Lessons learnt from Kitui pilot projects 2 Water supply by rural builders Procedures for being rural contractors 3 Water surveys and designs Survey, design and cost of water projects 4 Water from rock outcrops Rock catchment tanks, masonry and earth dams 5 Water from dry riverbeds Wells, subsurface dams WATER FOR RURAL COMMUNITIES i Technical handbooks in this series : Titles Contents 1 Water for rural communities Lessons learnt from Kitui pilot projects 2 Water supply by rural builders Procedures for being rural contractors 3 Water surveys and designs Survey, design and cost of water projects 4 Water from rock outcrops Rock catchment tanks, masonry and earth dams 5 Water from dry riverbeds Intakes, subsurface dams INTRODUCTORY GUIDE TO APPROPRIATE SOLUTIONS FOR WATER AND 1 Introductory Guide to Appropriate Solutions for Water Supply and Sanitation Foreword Toolkit for Water Services Groundwater has historically been given limited attention, and has not been perceivedas
11 SURFACE WATER INTAKE AND SMALL DAMS Surface water intake and small dams 11.1 R iver water intake Groundwater may be the preferred source (chapter 10), but the mostconvenient source
CHAPTER 1. WATER TANKS 3 1.2 History of tanks in Africa and Asia In Ovamboland in Northern Namibia, many water jars made of asbestos were installed at schools for harvesting rainwater from asbestos RAINWATER HARVESTING IN ARID AND SEMI-ARID ZONES Preface and Acknowledgements ILRI was established as a drainage institute and, over the years, has developed expertise in land drainage in arid zones under irrigated agriculture. The principles of land drainage deal with the removal of excess surface water, soilwater, and
RAINWATER HARVESTING FOR NATURAL RESOURCES … Published by Sida’s Regional Land Management Unit, 2000 TECHNICAL HANDBOOK No. 22 RAINWATER HARVESTING FOR NATURAL RESOURCES MANAGEMENT A planning guide for Tanzania 8 SPRING WATER TAPPING ANDREW TAYONG 8.2 Identification of spring source Local people, especially women (as drawers of water), but also farmers, hunters and grazers, have a good knowledge of the location of springs and their characteristics.SAMSAMWATER
SamSamWater provides information, advice & tools for water projects in developing countries. Safe and reliable water for all, together we canrealise it!
SAMSAMWATER
Welcome to the SamSamWater Rainwater Harvesting Tool. Rainwater harvesting is an easy way to collect water during the rainy season and store it for use during the dry season. Using this tool you can easily determine the optimum size of your rainwater harvesting reservoir. There is also an Android App of the Rainwater Harvesting Toolavailable.
WATER FROM ROADS
ii Technical handbooks in this series : Titles Contents 1 Water for rural communities Lessons learnt from Kitui pilot projects 2 Water supply by rural builders Procedures for being rural contractors 3 Water surveys and designs Survey, design and cost of water projects 4 Water from rock outcrops Rock catchment tanks, masonry and earth dams 5 Water from dry riverbeds Wells, subsurface dams WATER FOR RURAL COMMUNITIES i Technical handbooks in this series : Titles Contents 1 Water for rural communities Lessons learnt from Kitui pilot projects 2 Water supply by rural builders Procedures for being rural contractors 3 Water surveys and designs Survey, design and cost of water projects 4 Water from rock outcrops Rock catchment tanks, masonry and earth dams 5 Water from dry riverbeds Intakes, subsurface dams INTRODUCTORY GUIDE TO APPROPRIATE SOLUTIONS FOR WATER AND 1 Introductory Guide to Appropriate Solutions for Water Supply and Sanitation Foreword Toolkit for Water Services Groundwater has historically been given limited attention, and has not been perceivedas
11 SURFACE WATER INTAKE AND SMALL DAMS Surface water intake and small dams 11.1 R iver water intake Groundwater may be the preferred source (chapter 10), but the mostconvenient source
CHAPTER 1. WATER TANKS 3 1.2 History of tanks in Africa and Asia In Ovamboland in Northern Namibia, many water jars made of asbestos were installed at schools for harvesting rainwater from asbestos RAINWATER HARVESTING IN ARID AND SEMI-ARID ZONES Preface and Acknowledgements ILRI was established as a drainage institute and, over the years, has developed expertise in land drainage in arid zones under irrigated agriculture. The principles of land drainage deal with the removal of excess surface water, soilwater, and
RAINWATER HARVESTING FOR NATURAL RESOURCES … Published by Sida’s Regional Land Management Unit, 2000 TECHNICAL HANDBOOK No. 22 RAINWATER HARVESTING FOR NATURAL RESOURCES MANAGEMENT A planning guide for Tanzania 8 SPRING WATER TAPPING ANDREW TAYONG 8.2 Identification of spring source Local people, especially women (as drawers of water), but also farmers, hunters and grazers, have a good knowledge of the location of springs and their characteristics.SAMSAMWATER
Welcome to the SamSamWater Rainwater Harvesting Tool. Rainwater harvesting is an easy way to collect water during the rainy season and store it for use during the dry season. Using this tool you can easily determine the optimum size of your rainwater harvesting reservoir. There is also an Android App of the Rainwater Harvesting Toolavailable.
SAMSAMWATER
SamSamWater Climate Tool (precipitation & evaporation) Local climate data is very important for water studies. However, climate data is not always available or accessible. The SamSamWater Climate Tool uses data from 28800 stations of FAOCLIM to estimate precipitation and evaporation anywhere on Earth.SAMSAMWATER
Geological maps of Kenya Geological information is often essential for many water and sanitation projects. On this page we've published the geological maps of Kenya so that others can make use of this information in their projects or research. CHAPTER 1. WATER TANKS 3 1.2 History of tanks in Africa and Asia In Ovamboland in Northern Namibia, many water jars made of asbestos were installed at schools for harvesting rainwater from asbestos 14 COAGULATION AND FLOCCULATION Coagulation and flocculation 14.1 Introduction Coagulation and flocculation provide the water treat-ment process by which finely divided suspended and colloidal matter in WATER SURVEYS AND DESIGNS ii Technical handbooks in this series : Titles Contents 1 Water for rural communities Lessons learnt from Kitui pilot projects 2 Water supply by rural builders Procedures for being rural contractors 3 Water surveys and designs Survey, design and cost of water projects 4 Water from rock outcrops Rock catchment tanks, masonry and earth dams 5 Water from dry riverbeds Wells, subsurface dams 24 WATER SUPPLY IN DISASTERS AND EMERGENCIES Chapter 24 However, in emergencies the factors that affect the choice of the drinking water systems2 usually differ considerably from the factors influencing such choices in development situations. This often leads to the choice of a different drinking water HANDBOOK FOR THE ASSESSMENT OF CATCHMENT WATER DEMAND AND … Handbook for the assessment of catchment water demand and use iv 5.2.3 South Africa 88 5.2.4 Swaziland 89 5.2.5 Tanzania, Kenya and Uganda 895.2.6 Zimbabwe 91
SUBSURFACE DAMS BUILT OF SOIL Erik Nissen-Petersen, ASAL Consultants Ltd., Kenya. asal@wananchi.com 5 6) Small subsurface dams built of soil in the 1980s, 1990s and 2000sWATER HARVESTING
WATER HARVESTING (AGL/MISC/17/91) A Manual for the Design and Construction of Water Harvesting Schemes for Plant Production by Will Critchley - Conservation Agronomist Centre for Development CooperationServices Free
SAMSAMWATER
SamSamWater provides information, advice & tools for water projects in developing countries. Safe and reliable water for all, together we canrealise it!
SAMSAMWATER
Welcome to the SamSamWater Rainwater Harvesting Tool. Rainwater harvesting is an easy way to collect water during the rainy season and store it for use during the dry season. Using this tool you can easily determine the optimum size of your rainwater harvesting reservoir. There is also an Android App of the Rainwater Harvesting Toolavailable.
WATER FROM ROADS
ii Technical handbooks in this series : Titles Contents 1 Water for rural communities Lessons learnt from Kitui pilot projects 2 Water supply by rural builders Procedures for being rural contractors 3 Water surveys and designs Survey, design and cost of water projects 4 Water from rock outcrops Rock catchment tanks, masonry and earth dams 5 Water from dry riverbeds Wells, subsurface dams WATER FOR RURAL COMMUNITIES i Technical handbooks in this series : Titles Contents 1 Water for rural communities Lessons learnt from Kitui pilot projects 2 Water supply by rural builders Procedures for being rural contractors 3 Water surveys and designs Survey, design and cost of water projects 4 Water from rock outcrops Rock catchment tanks, masonry and earth dams 5 Water from dry riverbeds Intakes, subsurface dams INTRODUCTORY GUIDE TO APPROPRIATE SOLUTIONS FOR WATER AND 1 Introductory Guide to Appropriate Solutions for Water Supply and Sanitation Foreword Toolkit for Water Services Groundwater has historically been given limited attention, and has not been perceivedas
11 SURFACE WATER INTAKE AND SMALL DAMS Surface water intake and small dams 11.1 R iver water intake Groundwater may be the preferred source (chapter 10), but the mostconvenient source
CHAPTER 1. WATER TANKS 3 1.2 History of tanks in Africa and Asia In Ovamboland in Northern Namibia, many water jars made of asbestos were installed at schools for harvesting rainwater from asbestos RAINWATER HARVESTING IN ARID AND SEMI-ARID ZONES Preface and Acknowledgements ILRI was established as a drainage institute and, over the years, has developed expertise in land drainage in arid zones under irrigated agriculture. The principles of land drainage deal with the removal of excess surface water, soilwater, and
RAINWATER HARVESTING FOR NATURAL RESOURCES … Published by Sida’s Regional Land Management Unit, 2000 TECHNICAL HANDBOOK No. 22 RAINWATER HARVESTING FOR NATURAL RESOURCES MANAGEMENT A planning guide for Tanzania 8 SPRING WATER TAPPING ANDREW TAYONG 8.2 Identification of spring source Local people, especially women (as drawers of water), but also farmers, hunters and grazers, have a good knowledge of the location of springs and their characteristics.SAMSAMWATER
SamSamWater provides information, advice & tools for water projects in developing countries. Safe and reliable water for all, together we canrealise it!
SAMSAMWATER
Welcome to the SamSamWater Rainwater Harvesting Tool. Rainwater harvesting is an easy way to collect water during the rainy season and store it for use during the dry season. Using this tool you can easily determine the optimum size of your rainwater harvesting reservoir. There is also an Android App of the Rainwater Harvesting Toolavailable.
WATER FROM ROADS
ii Technical handbooks in this series : Titles Contents 1 Water for rural communities Lessons learnt from Kitui pilot projects 2 Water supply by rural builders Procedures for being rural contractors 3 Water surveys and designs Survey, design and cost of water projects 4 Water from rock outcrops Rock catchment tanks, masonry and earth dams 5 Water from dry riverbeds Wells, subsurface dams WATER FOR RURAL COMMUNITIES i Technical handbooks in this series : Titles Contents 1 Water for rural communities Lessons learnt from Kitui pilot projects 2 Water supply by rural builders Procedures for being rural contractors 3 Water surveys and designs Survey, design and cost of water projects 4 Water from rock outcrops Rock catchment tanks, masonry and earth dams 5 Water from dry riverbeds Intakes, subsurface dams INTRODUCTORY GUIDE TO APPROPRIATE SOLUTIONS FOR WATER AND 1 Introductory Guide to Appropriate Solutions for Water Supply and Sanitation Foreword Toolkit for Water Services Groundwater has historically been given limited attention, and has not been perceivedas
11 SURFACE WATER INTAKE AND SMALL DAMS Surface water intake and small dams 11.1 R iver water intake Groundwater may be the preferred source (chapter 10), but the mostconvenient source
CHAPTER 1. WATER TANKS 3 1.2 History of tanks in Africa and Asia In Ovamboland in Northern Namibia, many water jars made of asbestos were installed at schools for harvesting rainwater from asbestos RAINWATER HARVESTING IN ARID AND SEMI-ARID ZONES Preface and Acknowledgements ILRI was established as a drainage institute and, over the years, has developed expertise in land drainage in arid zones under irrigated agriculture. The principles of land drainage deal with the removal of excess surface water, soilwater, and
RAINWATER HARVESTING FOR NATURAL RESOURCES … Published by Sida’s Regional Land Management Unit, 2000 TECHNICAL HANDBOOK No. 22 RAINWATER HARVESTING FOR NATURAL RESOURCES MANAGEMENT A planning guide for Tanzania 8 SPRING WATER TAPPING ANDREW TAYONG 8.2 Identification of spring source Local people, especially women (as drawers of water), but also farmers, hunters and grazers, have a good knowledge of the location of springs and their characteristics.SAMSAMWATER
Welcome to the SamSamWater Rainwater Harvesting Tool. Rainwater harvesting is an easy way to collect water during the rainy season and store it for use during the dry season. Using this tool you can easily determine the optimum size of your rainwater harvesting reservoir. There is also an Android App of the Rainwater Harvesting Toolavailable.
SAMSAMWATER
SamSamWater Climate Tool (precipitation & evaporation) Local climate data is very important for water studies. However, climate data is not always available or accessible. The SamSamWater Climate Tool uses data from 28800 stations of FAOCLIM to estimate precipitation and evaporation anywhere on Earth.SAMSAMWATER
Geological maps of Kenya Geological information is often essential for many water and sanitation projects. On this page we've published the geological maps of Kenya so that others can make use of this information in their projects or research. CHAPTER 1. WATER TANKS 3 1.2 History of tanks in Africa and Asia In Ovamboland in Northern Namibia, many water jars made of asbestos were installed at schools for harvesting rainwater from asbestos 14 COAGULATION AND FLOCCULATION Coagulation and flocculation 14.1 Introduction Coagulation and flocculation provide the water treat-ment process by which finely divided suspended and colloidal matter in WATER SURVEYS AND DESIGNS ii Technical handbooks in this series : Titles Contents 1 Water for rural communities Lessons learnt from Kitui pilot projects 2 Water supply by rural builders Procedures for being rural contractors 3 Water surveys and designs Survey, design and cost of water projects 4 Water from rock outcrops Rock catchment tanks, masonry and earth dams 5 Water from dry riverbeds Wells, subsurface dams 24 WATER SUPPLY IN DISASTERS AND EMERGENCIES Chapter 24 However, in emergencies the factors that affect the choice of the drinking water systems2 usually differ considerably from the factors influencing such choices in development situations. This often leads to the choice of a different drinking water HANDBOOK FOR THE ASSESSMENT OF CATCHMENT WATER DEMAND AND … Handbook for the assessment of catchment water demand and use iv 5.2.3 South Africa 88 5.2.4 Swaziland 89 5.2.5 Tanzania, Kenya and Uganda 895.2.6 Zimbabwe 91
SUBSURFACE DAMS BUILT OF SOIL Erik Nissen-Petersen, ASAL Consultants Ltd., Kenya. asal@wananchi.com 5 6) Small subsurface dams built of soil in the 1980s, 1990s and 2000sWATER HARVESTING
WATER HARVESTING (AGL/MISC/17/91) A Manual for the Design and Construction of Water Harvesting Schemes for Plant Production by Will Critchley - Conservation Agronomist Centre for Development CooperationServices Free
SAMSAMWATER
SamSamWater provides information, advice & tools for water projects in developing countries. Safe and reliable water for all, together we canrealise it!
SAMSAMWATER
SamSamWater UTM Zones Tool. The Universal Transverse Mercator (UTM) coordinate system is a method of specifying locations on Earth. When working with a GPS or maps based on the UTM-system, it is necessary to know in which UTM zone you are. This tool displays all UTM grid zones on a map, which enables you to find the correct zone.SAMSAMWATER
SamSamWater Climate Tool (precipitation & evaporation) Local climate data is very important for water studies. However, climate data is not always available or accessible. The SamSamWater Climate Tool uses data from 28800 stations of FAOCLIM to estimate precipitation and evaporation anywhere on Earth. 11 SURFACE WATER INTAKE AND SMALL DAMS Surface water intake and small dams 11.1 R iver water intake Groundwater may be the preferred source (chapter 10), but the mostconvenient source
WATER FROM ROADS
ii Technical handbooks in this series : Titles Contents 1 Water for rural communities Lessons learnt from Kitui pilot projects 2 Water supply by rural builders Procedures for being rural contractors 3 Water surveys and designs Survey, design and cost of water projects 4 Water from rock outcrops Rock catchment tanks, masonry and earth dams 5 Water from dry riverbeds Wells, subsurface dams 14 COAGULATION AND FLOCCULATION Coagulation and flocculation 14.1 Introduction Coagulation and flocculation provide the water treat-ment process by which finely divided suspended and colloidal matter in CHAPTER 1. WATER TANKS 3 1.2 History of tanks in Africa and Asia In Ovamboland in Northern Namibia, many water jars made of asbestos were installed at schools for harvesting rainwater from asbestos RAINWATER HARVESTING IN ARID AND SEMI-ARID ZONES Preface and Acknowledgements ILRI was established as a drainage institute and, over the years, has developed expertise in land drainage in arid zones under irrigated agriculture. The principles of land drainage deal with the removal of excess surface water, soilwater, and
8 SPRING WATER TAPPING ANDREW TAYONG 8.2 Identification of spring source Local people, especially women (as drawers of water), but also farmers, hunters and grazers, have a good knowledge of the location of springs and their characteristics. 22 TECHNOLOGIES FOR FLUORIDE REMOVAL LEELA LYENGAR Te c hnologies for fluoride removal 22.1. Introduction Fluoride is a normal constituent of natural water samples. Its concentration, though, varies significantly depending on the water source.SAMSAMWATER
SamSamWater provides information, advice & tools for water projects in developing countries. Safe and reliable water for all, together we canrealise it!
SAMSAMWATER
SamSamWater UTM Zones Tool. The Universal Transverse Mercator (UTM) coordinate system is a method of specifying locations on Earth. When working with a GPS or maps based on the UTM-system, it is necessary to know in which UTM zone you are. This tool displays all UTM grid zones on a map, which enables you to find the correct zone.SAMSAMWATER
SamSamWater Climate Tool (precipitation & evaporation) Local climate data is very important for water studies. However, climate data is not always available or accessible. The SamSamWater Climate Tool uses data from 28800 stations of FAOCLIM to estimate precipitation and evaporation anywhere on Earth. 11 SURFACE WATER INTAKE AND SMALL DAMS Surface water intake and small dams 11.1 R iver water intake Groundwater may be the preferred source (chapter 10), but the mostconvenient source
WATER FROM ROADS
ii Technical handbooks in this series : Titles Contents 1 Water for rural communities Lessons learnt from Kitui pilot projects 2 Water supply by rural builders Procedures for being rural contractors 3 Water surveys and designs Survey, design and cost of water projects 4 Water from rock outcrops Rock catchment tanks, masonry and earth dams 5 Water from dry riverbeds Wells, subsurface dams 14 COAGULATION AND FLOCCULATION Coagulation and flocculation 14.1 Introduction Coagulation and flocculation provide the water treat-ment process by which finely divided suspended and colloidal matter in CHAPTER 1. WATER TANKS 3 1.2 History of tanks in Africa and Asia In Ovamboland in Northern Namibia, many water jars made of asbestos were installed at schools for harvesting rainwater from asbestos RAINWATER HARVESTING IN ARID AND SEMI-ARID ZONES Preface and Acknowledgements ILRI was established as a drainage institute and, over the years, has developed expertise in land drainage in arid zones under irrigated agriculture. The principles of land drainage deal with the removal of excess surface water, soilwater, and
8 SPRING WATER TAPPING ANDREW TAYONG 8.2 Identification of spring source Local people, especially women (as drawers of water), but also farmers, hunters and grazers, have a good knowledge of the location of springs and their characteristics. 22 TECHNOLOGIES FOR FLUORIDE REMOVAL LEELA LYENGAR Te c hnologies for fluoride removal 22.1. Introduction Fluoride is a normal constituent of natural water samples. Its concentration, though, varies significantly depending on the water source.SAMSAMWATER
SamSamWater UTM Zones Tool. The Universal Transverse Mercator (UTM) coordinate system is a method of specifying locations on Earth. When working with a GPS or maps based on the UTM-system, it is necessary to know in which UTM zone you are. This tool displays all UTM grid zones on a map, which enables you to find the correct zone.SAMSAMWATER
SamSamWater Climate Tool (precipitation & evaporation) Local climate data is very important for water studies. However, climate data is not always available or accessible. The SamSamWater Climate Tool uses data from 28800 stations of FAOCLIM to estimate precipitation and evaporation anywhere on Earth.SAMSAMWATER
Calculation of run off in relation to precipitation. Q = (Area) n * Rainfall * % of run off (mind dimensions). For annual flows, the ‘power n’ varies mostly between 0.6 and 0.85 with an average of 0.75. For humid climates the value of n is higher. For mean annual flows the ‘n’ is higher than for floods. A low ‘n’ means arapid
SAMSAMWATER
A handbook that presents instructions, standards, and procedures for the selection, design, and use of structures, which measure or regulate the flow rate in open channels.sourceSAMSAMWATER
SamSamWater library with information on Geology and soils. The classic 'geological time scale' is a hierarchical ordinal system, in which the eras are ranked: 'stages' nest within 'series'within 'systems' within 'eras' within 'eons'.SAMSAMWATER
Explanation SamSamWater makes information on water and sanitation easy to find and accessible for all. This page contains a database with practical information, data and (GIS)maps.SAMSAMWATER
Topographic maps of Kenya Topographic maps of Kenya 1:50,000 produced by the Survey of Kenya, Great Britain Directorate of Military Survey, Great Britain War Office, Great Britain Air Ministry and the Great Britain War Office, General Staff. WATER FOR RURAL COMMUNITIES i Technical handbooks in this series : Titles Contents 1 Water for rural communities Lessons learnt from Kitui pilot projects 2 Water supply by rural builders Procedures for being rural contractors 3 Water surveys and designs Survey, design and cost of water projects 4 Water from rock outcrops Rock catchment tanks, masonry and earth dams 5 Water from dry riverbeds Intakes, subsurface dams 24 WATER SUPPLY IN DISASTERS AND EMERGENCIES Chapter 24 However, in emergencies the factors that affect the choice of the drinking water systems2 usually differ considerably from the factors influencing such choices in development situations. This often leads to the choice of a different drinking water A PRACTICAL GUIDE TO SAND DAM IMPLEMENTATION A practical guide to sand dam implementation Water supply through local structures as adaptation to climate change A guideline based on the Swiss Re 2007 award winning pilot project “Water harvesting toSAMSAMWATER
SamSamWater provides information, advice & tools for water projects in developing countries. Safe and reliable water for all, together we canrealise it!
SAMSAMWATER
SamSamWater UTM Zones Tool. The Universal Transverse Mercator (UTM) coordinate system is a method of specifying locations on Earth. When working with a GPS or maps based on the UTM-system, it is necessary to know in which UTM zone you are. This tool displays all UTM grid zones on a map, which enables you to find the correct zone.SAMSAMWATER
SamSamWater Climate Tool (precipitation & evaporation) Local climate data is very important for water studies. However, climate data is not always available or accessible. The SamSamWater Climate Tool uses data from 28800 stations of FAOCLIM to estimate precipitation and evaporation anywhere on Earth. 11 SURFACE WATER INTAKE AND SMALL DAMS Surface water intake and small dams 11.1 R iver water intake Groundwater may be the preferred source (chapter 10), but the mostconvenient source
WATER FROM ROADS
ii Technical handbooks in this series : Titles Contents 1 Water for rural communities Lessons learnt from Kitui pilot projects 2 Water supply by rural builders Procedures for being rural contractors 3 Water surveys and designs Survey, design and cost of water projects 4 Water from rock outcrops Rock catchment tanks, masonry and earth dams 5 Water from dry riverbeds Wells, subsurface dams 14 COAGULATION AND FLOCCULATION Coagulation and flocculation 14.1 Introduction Coagulation and flocculation provide the water treat-ment process by which finely divided suspended and colloidal matter in CHAPTER 1. WATER TANKS 3 1.2 History of tanks in Africa and Asia In Ovamboland in Northern Namibia, many water jars made of asbestos were installed at schools for harvesting rainwater from asbestos RAINWATER HARVESTING IN ARID AND SEMI-ARID ZONES Preface and Acknowledgements ILRI was established as a drainage institute and, over the years, has developed expertise in land drainage in arid zones under irrigated agriculture. The principles of land drainage deal with the removal of excess surface water, soilwater, and
8 SPRING WATER TAPPING ANDREW TAYONG 8.2 Identification of spring source Local people, especially women (as drawers of water), but also farmers, hunters and grazers, have a good knowledge of the location of springs and their characteristics. 22 TECHNOLOGIES FOR FLUORIDE REMOVAL LEELA LYENGAR Te c hnologies for fluoride removal 22.1. Introduction Fluoride is a normal constituent of natural water samples. Its concentration, though, varies significantly depending on the water source.SAMSAMWATER
SamSamWater provides information, advice & tools for water projects in developing countries. Safe and reliable water for all, together we canrealise it!
SAMSAMWATER
SamSamWater UTM Zones Tool. The Universal Transverse Mercator (UTM) coordinate system is a method of specifying locations on Earth. When working with a GPS or maps based on the UTM-system, it is necessary to know in which UTM zone you are. This tool displays all UTM grid zones on a map, which enables you to find the correct zone.SAMSAMWATER
SamSamWater Climate Tool (precipitation & evaporation) Local climate data is very important for water studies. However, climate data is not always available or accessible. The SamSamWater Climate Tool uses data from 28800 stations of FAOCLIM to estimate precipitation and evaporation anywhere on Earth. 11 SURFACE WATER INTAKE AND SMALL DAMS Surface water intake and small dams 11.1 R iver water intake Groundwater may be the preferred source (chapter 10), but the mostconvenient source
WATER FROM ROADS
ii Technical handbooks in this series : Titles Contents 1 Water for rural communities Lessons learnt from Kitui pilot projects 2 Water supply by rural builders Procedures for being rural contractors 3 Water surveys and designs Survey, design and cost of water projects 4 Water from rock outcrops Rock catchment tanks, masonry and earth dams 5 Water from dry riverbeds Wells, subsurface dams 14 COAGULATION AND FLOCCULATION Coagulation and flocculation 14.1 Introduction Coagulation and flocculation provide the water treat-ment process by which finely divided suspended and colloidal matter in CHAPTER 1. WATER TANKS 3 1.2 History of tanks in Africa and Asia In Ovamboland in Northern Namibia, many water jars made of asbestos were installed at schools for harvesting rainwater from asbestos RAINWATER HARVESTING IN ARID AND SEMI-ARID ZONES Preface and Acknowledgements ILRI was established as a drainage institute and, over the years, has developed expertise in land drainage in arid zones under irrigated agriculture. The principles of land drainage deal with the removal of excess surface water, soilwater, and
8 SPRING WATER TAPPING ANDREW TAYONG 8.2 Identification of spring source Local people, especially women (as drawers of water), but also farmers, hunters and grazers, have a good knowledge of the location of springs and their characteristics. 22 TECHNOLOGIES FOR FLUORIDE REMOVAL LEELA LYENGAR Te c hnologies for fluoride removal 22.1. Introduction Fluoride is a normal constituent of natural water samples. Its concentration, though, varies significantly depending on the water source.SAMSAMWATER
SamSamWater UTM Zones Tool. The Universal Transverse Mercator (UTM) coordinate system is a method of specifying locations on Earth. When working with a GPS or maps based on the UTM-system, it is necessary to know in which UTM zone you are. This tool displays all UTM grid zones on a map, which enables you to find the correct zone.SAMSAMWATER
SamSamWater Climate Tool (precipitation & evaporation) Local climate data is very important for water studies. However, climate data is not always available or accessible. The SamSamWater Climate Tool uses data from 28800 stations of FAOCLIM to estimate precipitation and evaporation anywhere on Earth.SAMSAMWATER
Calculation of run off in relation to precipitation. Q = (Area) n * Rainfall * % of run off (mind dimensions). For annual flows, the ‘power n’ varies mostly between 0.6 and 0.85 with an average of 0.75. For humid climates the value of n is higher. For mean annual flows the ‘n’ is higher than for floods. A low ‘n’ means arapid
SAMSAMWATER
A handbook that presents instructions, standards, and procedures for the selection, design, and use of structures, which measure or regulate the flow rate in open channels.sourceSAMSAMWATER
SamSamWater library with information on Geology and soils. The classic 'geological time scale' is a hierarchical ordinal system, in which the eras are ranked: 'stages' nest within 'series'within 'systems' within 'eras' within 'eons'.SAMSAMWATER
Explanation SamSamWater makes information on water and sanitation easy to find and accessible for all. This page contains a database with practical information, data and (GIS)maps.SAMSAMWATER
Topographic maps of Kenya Topographic maps of Kenya 1:50,000 produced by the Survey of Kenya, Great Britain Directorate of Military Survey, Great Britain War Office, Great Britain Air Ministry and the Great Britain War Office, General Staff. WATER FOR RURAL COMMUNITIES i Technical handbooks in this series : Titles Contents 1 Water for rural communities Lessons learnt from Kitui pilot projects 2 Water supply by rural builders Procedures for being rural contractors 3 Water surveys and designs Survey, design and cost of water projects 4 Water from rock outcrops Rock catchment tanks, masonry and earth dams 5 Water from dry riverbeds Intakes, subsurface dams 24 WATER SUPPLY IN DISASTERS AND EMERGENCIES Chapter 24 However, in emergencies the factors that affect the choice of the drinking water systems2 usually differ considerably from the factors influencing such choices in development situations. This often leads to the choice of a different drinking water A PRACTICAL GUIDE TO SAND DAM IMPLEMENTATION A practical guide to sand dam implementation Water supply through local structures as adaptation to climate change A guideline based on the Swiss Re 2007 award winning pilot project “Water harvesting toSAMSAMWATER
SamSamWater provides information, advice & tools for water projects in developing countries. Safe and reliable water for all, together we canrealise it!
SAMSAMWATER
Rainwater harvesting is an easy way to collect water during the rainy season and store it for use during the dry season. Using this tool you can easily determine the optimum size ofSAMSAMWATER
SamSamWater makes information on water and sanitation easy to find and accessible for all. This page contains practical information, data and(GIS)maps.
WATER FROM ROADS
ii Technical handbooks in this series : Titles Contents 1 Water for rural communities Lessons learnt from Kitui pilot projects 2 Water supply by rural builders Procedures for being rural contractors 3 Water surveys and designs Survey, design and cost of water projects 4 Water from rock outcrops Rock catchment tanks, masonry and earth dams 5 Water from dry riverbeds Wells, subsurface dams WATER FOR RURAL COMMUNITIES i Technical handbooks in this series : Titles Contents 1 Water for rural communities Lessons learnt from Kitui pilot projects 2 Water supply by rural builders Procedures for being rural contractors 3 Water surveys and designs Survey, design and cost of water projects 4 Water from rock outcrops Rock catchment tanks, masonry and earth dams 5 Water from dry riverbeds Intakes, subsurface dams CHAPTER 1. WATER TANKSTYPES OF WATER TANKDIFFERENT TYPES OF WATER TANKSTYPES OF WATER HEATER TANKS 3 1.2 History of tanks in Africa and Asia In Ovamboland in Northern Namibia, many water jars made of asbestos were installed at schools for harvesting rainwater from asbestos 14 COAGULATION AND FLOCCULATION Coagulation and flocculation 14.1 Introduction Coagulation and flocculation provide the water treat-ment process by which finely divided suspended and colloidal matter in 11 SURFACE WATER INTAKE AND SMALL DAMSCOOLING WATER INTAKE STRUCTURE RULERAW WATER INTAKE STRUCTURESURFACE WATER INTAKEWATER INTAKE STRUCTUREWATER INTAKE STRUCTURE TYPESLAKE INTAKE STRUCTURE Surface water intake and small dams 11.1 R iver water intake Groundwater may be the preferred source (chapter 10), but the mostconvenient source
22 TECHNOLOGIES FOR FLUORIDE REMOVAL LEELA LYENGAR Te c hnologies for fluoride removal 22.1. Introduction Fluoride is a normal constituent of natural water samples. Its concentration, though, varies significantly depending on the water source. 8 SPRING WATER TAPPING ANDREW TAYONGSPRING WATER COLLECTION SYSTEMBUILDING A SPRING WATER SYSTEM 8.2 Identification of spring source Local people, especially women (as drawers of water), but also farmers, hunters and grazers, have a good knowledge of the location of springs and their characteristics.SAMSAMWATER
SamSamWater provides information, advice & tools for water projects in developing countries. Safe and reliable water for all, together we canrealise it!
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Rainwater harvesting is an easy way to collect water during the rainy season and store it for use during the dry season. Using this tool you can easily determine the optimum size ofSAMSAMWATER
SamSamWater makes information on water and sanitation easy to find and accessible for all. This page contains practical information, data and(GIS)maps.
WATER FROM ROADS
ii Technical handbooks in this series : Titles Contents 1 Water for rural communities Lessons learnt from Kitui pilot projects 2 Water supply by rural builders Procedures for being rural contractors 3 Water surveys and designs Survey, design and cost of water projects 4 Water from rock outcrops Rock catchment tanks, masonry and earth dams 5 Water from dry riverbeds Wells, subsurface dams WATER FOR RURAL COMMUNITIES i Technical handbooks in this series : Titles Contents 1 Water for rural communities Lessons learnt from Kitui pilot projects 2 Water supply by rural builders Procedures for being rural contractors 3 Water surveys and designs Survey, design and cost of water projects 4 Water from rock outcrops Rock catchment tanks, masonry and earth dams 5 Water from dry riverbeds Intakes, subsurface dams CHAPTER 1. WATER TANKSTYPES OF WATER TANKDIFFERENT TYPES OF WATER TANKSTYPES OF WATER HEATER TANKS 3 1.2 History of tanks in Africa and Asia In Ovamboland in Northern Namibia, many water jars made of asbestos were installed at schools for harvesting rainwater from asbestos 14 COAGULATION AND FLOCCULATION Coagulation and flocculation 14.1 Introduction Coagulation and flocculation provide the water treat-ment process by which finely divided suspended and colloidal matter in 11 SURFACE WATER INTAKE AND SMALL DAMSCOOLING WATER INTAKE STRUCTURE RULERAW WATER INTAKE STRUCTURESURFACE WATER INTAKEWATER INTAKE STRUCTUREWATER INTAKE STRUCTURE TYPESLAKE INTAKE STRUCTURE Surface water intake and small dams 11.1 R iver water intake Groundwater may be the preferred source (chapter 10), but the mostconvenient source
22 TECHNOLOGIES FOR FLUORIDE REMOVAL LEELA LYENGAR Te c hnologies for fluoride removal 22.1. Introduction Fluoride is a normal constituent of natural water samples. Its concentration, though, varies significantly depending on the water source. 8 SPRING WATER TAPPING ANDREW TAYONGSPRING WATER COLLECTION SYSTEMBUILDING A SPRING WATER SYSTEM 8.2 Identification of spring source Local people, especially women (as drawers of water), but also farmers, hunters and grazers, have a good knowledge of the location of springs and their characteristics. PROJECT UPDATES » SAMSAMWATER Together with our partner organisation Kaalo Foundation we are involved in a proejct to construct improved berkads in Budunbuto, Somalia. Berkads are sub-surface water reservoirs to store water during rains so it can be used during droughts.SAMSAMWATER
A handbook that presents instructions, standards, and procedures for the selection, design, and use of structures, which measure or regulate the flow rate in open channels.sourceSAMSAMWATER
SamSamWater library with information on Geology and soils. The classic 'geological time scale' is a hierarchical ordinal system, in which the eras are ranked: 'stages' nest within 'series'within 'systems' within 'eras' within 'eons'.SAMSAMWATER
Brilliant collection of maps. Contains an extensive resource of topographical maps, from 1:1,000,000 reference maps to 1:2,500 city maps. To view the maps, click on the tab 'Map Layers', click on 'Base mapping' and select the desired maps.SAMSAMWATER
Symposium organised by IAH’s Dutch Chapter and the Netherlands’ Hydrological Society, 29 November 2006, Utrecht, The Netherlands Arsenic contamination of groundwater has occurred in various parts of the world, most notably the Ganges Delta of Bangladesh and West Bengal, India, causing serious arsenic poisoning amongst large numbersof people.
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Explanation SamSamWater makes information on water and sanitation easy to find and accessible for all. This page contains a database with practical information, data and (GIS)maps.SAMSAMWATER
This booklet on water gives examples of innovations such as the use of sunlight to purify water, effective low-cost water filters, low-cost drip irrigation and locally prodcued hand pumps that are five times cheaper than imported pumps.SAMSAMWATER
A thesis that gives approaches to achieve sustained beneficial outcomes from WATSAN (WAter and SAnitation projects in development countries). Secondly itSAMSAMWATER
A reference book on aquifer test analyses methods. The first chapter summarizes the basic concepts and definitions of terms relevant to thesubject.
14 COAGULATION AND FLOCCULATION Coagulation and flocculation 14.1 Introduction Coagulation and flocculation provide the water treat-ment process by which finely divided suspended and colloidal matter inOther languages
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