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Water quality and calamities
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Water quality and calamities
Products of knowledge
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What is it?
A risk analysis model.
What can we use this for?
Water companies can use this model to anticipate risks that will lower water quality. For example, they can adjust their collection strategy in order to avoid or reduce the risks.
Who will be interested?
Department of Transport, Public Works, and Water Management drinking water companies.
More information
gertjan.zwolsman@kwrwater.nl
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What is it?
A method to determine threshold values that ensure a good chemical state in bodies of groundwater.
What can we use this for?
It is essential that the chemical quality of groundwater is good in order to protect groundwater-dependent aquatic and terrestrial nature systems, but also to facilitate sustainable drinking water extraction. Together with other European institutes, a method has been developed and subsequently tested on the Dutch situation. We are now able to deduce threshold values for good chemical quality for different groups of substances in any arbitrary groundwater body.
Who will be interested?
Water managers, policy makers, drinking water sector.
More information
jasper.griffioen@deltares.nl
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What is it?
A SOBEK 1D2D tool for water managers that provides insight into the impact of flood duration and frequency on soil quality along the river. The SOBEK water quality model calculates the transport of material and the water quality processes in both the surface water and the sediment. A 2D application is particularly used to simulate the deposition of contaminated sediment in floodplains over time and space. Based on the quality of the deposited material, statements can be made about future bottlenecks regarding soil quality during different flooding durations and frequencies. This tool has been used in the Dommel.
What can we use this for?
Relatively high discharges often occur in winter and spring, and the adjacent banks may flood during heavy rainfall. This means that historically-contaminated soil can be washed away from adjoining plots, or sedimentation of contaminated silt can occur. This not only leads to contamination of the surface water, but also affects the soil quality of the river banks. This support tool provides water managers with better insight into the impact of flooding on soil quality, enabling them to better demarcate the boundary between land soil and water soil. This is important with respect to how far the water manager should be held responsible for river bank quality.
Who will be interested?
Water managers, site managers.
More information
reinaldo.penailillo@deltares.nl
jan.joziasse@deltares.nl
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What is it?
A prototype to forecast water temperatures as part of FEWS (Flood Early Warning System). Using this water temperature forecasting system, information can be given about the consequences of meteorological conditions and heat discharge. To do so, data from the SOBEK-Rural model and the water temperature model are incorporated into DELWAQ in a FEWS environment.
What can we use this for?
In recent years, the problem of cooling water discharge in relation to the high water temperature of large rivers has regularly been a topical issue. Water managers, drinking water companies, industry and the energy sector need operational information about water quality and the general condition of the water system. It is expected that this water temperature application will be able to predict water temperature for the coming days in an operational environment.
Who will be interested?
Water managers, drinking water companies, industry, and the energy sector.
More information
reinaldo.penailillo@deltares.nl
matthijs.lemans@deltares.nl
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What is it?
Expansion of the existing link between ground- and surface water quantity models (Modflow and Sobek) to quality models, namely MT3D en DELWAQ.
What can we use this for?
Simultaneous simulation of the quality of ground- and surface water, taking mutual interaction into account. The transport of materials in the boundary zone can also be described realistically using the chemical balances and kinetic reactions that take place there. A PAO / Deltares course is being prepared on this subject, planned for the autumn 2010.
Who will be interested?
Water managers, water companies.
More information
jasper.griffioen@deltares.nl
david.rodriguezaguilera@deltares.nl
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What is it?
Scenario study into how frequently the temperature requirements of fish and the temperature standard for drinking water production (25°C) are exceeded because of a rise in water temperature caused by climate change. In this study, the absolute changes for 2050 are also calculated in water temperature (°C) per decade at different locations in national water bodies according to the KNMI’06 scenarios (W and W+).
What can we use this for?
Water companies and water managers gain more insight into the change in water temperature prior to 2050 in accordance with an (extreme) warm scenario at relevant sites for drinking water production (e.g. collection points) and for the ecology of fish (salmon, smelt, barbel and burbot). The exceedance frequencies give the number of days when the water temperature rises above the temperature requirements and temperature standard. On the basis of this, a statement can be made about future bottlenecks with regard to water temperature for drinking water production and fish, and measures can be prepared.
Who will be interested?
Water service, water boards, industry, energy companies, and water companies.
More information
reinaldo.penailillo@deltares.nl
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