Project in brief
All European countries must meet the requirements of the European Water Framework Directive (EWFD). The aim of the EWFD is to achieve and maintain good ecological quality of the aquatic environment. To do so, ground- and surface water must be studied, as well as their mutual coherence. The latter aspect has rarely been considered until now. We are developing integrated models that enable water managers to analyse the effects of measures on the ecological and chemical quality of ground- and surface water, and the extent of this impact. We are also developing tools to quantify the ecological impact of changes to hydrology, morphology and chemical water quality.
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The problem
Within the framework of implementing the Water Framework Directive (EWFD), water managers are now working on establishing the ecological goals for the markedly changed bodies of water. They will then define measures and implement them in ways that achieve these objectives in the most targeted and efficient way. The relationships between potential measures and the effects associated with them are not always clear at present.
Products of knowledge
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What is it?
The EmissieModule is a software program that provides a link between emission data and calculation models. The EmissieModule can bring together information about the sources of contaminated materials and calculate the emission of material into the surface water. Users can access sources from national databases, such as the Emission Registration, or use their own measurement data.
What can we use this for?
The EmissieModule is a tool that systematically gives information about contamination sources of surface water. Data from rainfall discharge models can be processed for example, which can then be used as input for water quality modelling (SOBEK). It can also be used with a stand-alone application to carry out an emission analysis for a place- and time-dependent material flow analysis.
Who will be interested?
Water managers and engineering consultants.
More information
reinaldo.penailillo@deltares.nl
erik.degoede@deltares.nl
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What is it?
An addition to the ecological knowledge database and an improvement to an associated computer model (HABITAT). Both are used to determine the impact of autonomous developments and (water) management measures on the ecology. For example, to estimate the impact on the ecological aims of the Framework Guideline for Water (KRW) and the Bird and Habitat Guideline (VHR).
What can we use this for?
The knowledge is made accessible to users via a wiki: HABITAT’s ecological toolbox. It includes descriptions of the relationships of ecological effects. A PAO / Deltares course on this subject is under preparation.
Who will be interested?
Water manager, authorised parties.
More information
marjolijn.haasnoot@deltares.nl
gerben.vangeest@deltares.nl
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What is it?
The ecological knowledge database for the HABITAT and KRW-surveyer computer models are made accessible via a wiki. The knowledge database contains information about the influence of environmental factors on the availability and quality of habitats for species and biotic communities of aquatic environments. Interested parties can become a member of the user group, and can even add impact relationships. In this way, the knowledge database will be expanded and improved. The knowledge database can be extended with other impact relationships, such as damage functions.
What can we use this for?
The knowledge is made accessible to users via a wiki. The relationships can be used in a model to quantify the effects on nature.
Who will be interested?
Engineering consultants, water managers, universities.
More information
marjolijn.haasnoot@deltares.nl
gerben.vangeest@deltares.nl
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What is it?
Sobek and Delft-3D make use of knowledge about water quality and ecology from the water quality processes library. A current important water quality problem (Framework Guideline for Water/KRW and swimming water standard) is the occurrence of algal blooms and floating layers of blue algae (cyano bacteria). Blue algae produce toxins that pose a direct threat to recreationists.
What can we use this for?
The most recent knowledge of and insight into the field of eutrophication (algal growth and nutrients) has been listed, quantified and implemented, with the result that the knowledge can now be accessed.
Who will be interested?
Water managers.
More information
hans.los@deltares.nl
david.burger@deltares.nl
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