Water Resources Assessment Dominique Senn seecon gmbh Water

Water Resources Assessment Dominique Senn, seecon gmbh Water Resources Assessment

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Find this presentation and more on www. sswm. info Contents 1. Water Resources Assessment 2. Purpose of Water Resources Assessment 3. Components of Water Resources Assessment 4. Conducting a Water Resources Assessment 5. Content Example 6. Advantages and Disadvantages 7. References Water Resources Assessment 3

Find this presentation and more on www. sswm. info 1. Water Resources Assessment Introduction (1/2) Water Resources Assessment (WRA) is a classic tool used in Integrated Water Resources Management (IWRM). Proposed definitions: • WRA is the process of measuring, collecting and analysing relevant parameters on the quantity and quality of water resources for the purpose of a better development and management of water resources. • WRA is the “determination of sources, extent, dependability and quality of water resources for their utilisation and control. ” (HUBERT n. y. ) Water Resources Assessment 4

Find this presentation and more on www. sswm. info 1. Water Resources Assessment Introduction (2/2) WRA is a tool to. . . Evaluate water resources in relation to a reference frame. . . Evaluate the dynamics of the water resource in relation to human impacts or demands. Depending on the objective of the assessment, WRA may look at a range of physical, chemical and biological features in assessing the dynamics of the resource. By conducting a WRA, you are establishing a common, agreed and trusted information base that can be used by stakeholders as a basis for informed and effective decision making. Water Resources Assessment Source: http: //pubs. usgs. gov/of/2005/1214/ [Accessed: 06. 01. 2014] 5

Find this presentation and more on www. sswm. info 2. Purpose of Water Resources Assessment WRA helps clarifying the following issues • Current status of water resources at different scales, including inter- and intra-annual variability • Current water use (including variability), and the resulting societal and environmental trade-offs • Scale related externalities, especially when patterns of water use are considered over a range of temporal and spatial scales • Social and institutional factors affecting access to water and their reliability • Opportunities for saving or making water distribution and use more productive, efficient and/or equitable • Efficacy and transparency of existing water-related policies and decision making processes • Conflicts between existing information sets, and the overall accuracy of government (and other) statistics Water Resources Assessment 6

Find this presentation and more on www. sswm. info 2. Purpose of Water Resources Assessment When to conduct a WRA • When you want to improve your sanitation and water system to make it more sustainable. • When a comprehensive and large-scale change in the water and sanitation system is envisaged. Example: Aim of the intervention • To save water • To make water use more efficient Water Resources Assessment Conduct WRA with the aim of • Identifying water consumers • Understanding water consumption Take an informed decision about • Where water can be saved or water use made more efficient • How water can be saved or water use made more efficient 7

Find this presentation and more on www. sswm. info 3. Components of Water Resources Assessment Illustration of main components Collection of hydrological data (e. g. in data banks) (water cycle components, including quantity and quality of surface and groundwater, station information) Collection of physiographic data (e. g. in a GIS) (topographic, soils, geology, political borders, catchment borders, land use, river network) Education and training Techniques of areal assessment of water resources (regionalisation techniques) Basic and applied research Water resources information (publications, maps, etc. ) Users (planning for water resources facilities) Components of a water resources assessment (WRA) program. Source: UNESCO and WMO (1997) Water Resources Assessment 8

Find this presentation and more on www. sswm. info 3. Components of Water Resources Assessment Explanation of main components (1/3) • Collection of hydrological data: historical data on water cycle components at a number of points distributed over the assessment area such as quantity and quality of surface and groundwater. Discharge history of the Nile and lake levels at Qarun Lake. Source: http: //www. paleoresearch. com/UW_Files/archaeo_models -nile. html [Accessed: 03. 02. 2014] Water Resources Assessment 9

Find this presentation and more on www. sswm. info 3. Components of Water Resources Assessment Explanation of main components (2/3) • Collection of physiographic data: obtaining data on the natural characteristics of the terrain that determine the areal and time variations of the water cycle components, such as topography, soils, surface and bed rock geology, land-use and land-cover. Subsurface characterisation of water bodies. Source: http: //water. usgs. gov/ogw/karst/kigconferen ce/jlk_subsurface. htm [Accessed: 03. 02. 2014] Water Resources Assessment 10

Find this presentation and more on www. sswm. info 3. Components of Water Resources Assessment Explanation of main components (3/3) • Collection of data from basic and applied research: especially when some data is missing or the available date is out of date or in order to develop the required technology used for the water resources assessment. • Education and training: all the basic water resources assessment activities require skilled manpower and this in turn require training and education of the manpower need. • Techniques of areal assessment of water resources: techniques of transforming data into information and of relating the hydrological data to the physiographic data for the purpose of obtaining information on the water-resource characteristics at any point of the assessment area. Water Resources Assessment 11

Find this presentation and more on www. sswm. info 4. Conducting a Water Resources Assessment Things to consider • Include various experts from different backgrounds • Identify the most important issues and priority areas in a rapid water resources assessment • Include the examination of changes in land use, possible soil degradation and climate variability and change for large and longterm projects • If possible, link the WRA to an environmental impact assessment • To analyse the change capacity of a river basin and to protect its water quality and quantity, include a strategic impact assessment. Water Resources Assessment 12

Find this presentation and more on www. sswm. info 4. Conducting a Water Resources Assessments in an IWRM perspective additionally include • Demand assessment: examines the competing uses of water with the physical resource base and assesses demand for water (at a given price), thus helping to determine the financial resources available for water resource management. • Environmental impact assessment and strategic impact assessment: collect data on the social and environmental implications of development programmes and projects. • Social impact assessment: examines how social and institutional structures affect water use and management, or how a specific project might affect social structures. • Risk or vulnerability assessment: looks at the likelihood of extreme events, such as flood and droughts, and the vulnerability of society to them. Water Resources Assessment 13

Find this presentation and more on www. sswm. info 5. Content Example A WRA could include the following points (1/3): 1. Introduction 2. Country Profile • Geography • Population and social impacts • Economy • Flood control • Legislative framework Example of a Country Water Resource Profile for Mozambique. Source: http: //nepadwatercoe. org/nepad-water-coes-countrywater-resource-profiles-wwweek/ [Accessed: 21. 01. 2014] Water Resources Assessment 14

Find this presentation and more on www. sswm. info 5. Content Example A WRA could include the following points (2/3): 3. Current Uses of Water Resources • Water supply • Domestic uses and needs • Industrial/commercial uses and needs • Agricultural uses and needs • Hydropower • Stream gauge network • Waterway transportation 4. Surface Water Resources • Precipitation and climate • Rivers and basins • Lakes and swamps • Deforestation effects Water Resources Assessment Water uses in Bangladesh, UK and USA. Source: http: //www. bbc. co. uk/schools/gcsebitesize/geography/water_rivers/water_usage_rev 1. shtml [Accessed: 21. 01. 2014] 15

Find this presentation and more on www. sswm. info 5. Content Example A WRA could include the following points (3/3): 5. Ground Water Resources • Aquifer definition and characteristics • Hydrogeology 6. Water Quality • Surface water • Ground water • Domestic waste disposal Water Quality Mapping. Source: http: //www. epa. state. il. us/waterquality/report-1996/ [Accessed: 21. 01. 2014] Water Resources Assessment 16

Find this presentation and more on www. sswm. info 6. Advantages and Disadvantages + Conducting a water resources assessment provides you with a comprehensive understanding of the quality and quantity of water resources in your area. + Only by having a detailed understanding of the water resources in your area, allows large-scale change in your water system. Water Resources Assessment - “Classic” WRA focuses predominantly on water and does usually not consider the nutrient cycle and sanitation. - Conducting a WRA requires considerable time and resources. - Requires training and education in order to conduct a comprehensive analysis. - Requires a network of experts who are able to conduct, analyse and share the data. 17

Find this presentation and more on www. sswm. info 7. References HUBERT, P. (n. y. ): International Glossary of Hydrology. Fontainebleau: Hubert Pierre. URL: http: //hydrologie. org/glu/HINDEN. HTM [Accessed: 06. 01. 2014]. UNESCO (Editor); WMO (Editor) (1997): Water Resources Assessment. Handbook for Review of National Capabilities. Geneva and Paris: World Meteorological Organisation (WMO) and United Nations Educational Scientific Cultural Organisation (UNESCO). URL: http: //www. wmo. int/pages/prog/hwrp/wrahand. php [Accessed: 06. 01. 2014] Water Resources Assessment 18

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