Development of model for calculating flood risk and costs (2020-2021).

In 2020-2021, LNH water has contributed to the development of DTU’s new free damage cost model DTU Damage Economics for use in damage calculations of floods from the sea and from cloudbursts. The new and very special thing about DTU’s damage cost model is that it can be used to calculate the financial damages on a very detailed geographical level and for many sectors. In this way, the municipalities can more easily create an overview of what happens if the water hits buildings, businesses, transport, cultural and historical values, nature, people and other values. The model provides a good basis for planning climate adaptation, because it can show where it is necessary to intervene locally, where the damage will be great, and where good solutions can be found. It is an advance compared to the existing models, which typically only calculate insurance damages in the event of floods on buildings, and which do not carry out an actual economic damage calculation sector by sector. The model was initially developed to calculate damage from flooding from the sea, but with a minor adjustment in the building area, it can also be used to calculate damage from cloudbursts. Here, it has just become a legal requirement to carry out detailed sector-based economic damage calculations. The damage model was developed by DTU Management in collaboration with LNH water, and is part of a larger research and innovation project called the COHERENT project, which is financed by the Innovation Fund.

Teaching Geographic Information Systems at DTU Space (2020).

In 2020, LNH water has handled the teaching for DTU Space on the MSc courses 30530 Geographical information systems and 30532 Introduction to digital mapping and GIS. Both courses are introductory courses to Geographic Information Systems (GIS) through the use of QGIS, which is a freely available open source software for use in the analysis of geographic data. The courses include lectures in general concepts and theories as well as exercises with the most common tools for spatial analysis with different types of geographic data, including raster/vector data, satellite data and geodata databases. The students who follow the GIS courses come primarily from DTU Environment, DTU Construction, DTU Management and from foreign universities. There were approx. 40 students on each of the two courses. The course language is English.

Area plans for Holte, Dronninggård and Øverød (2019).

Rudersdal Municipality has decided that the sewage system in Holte, Dronninggård and Øverød must be adapted to the climate, so that waste water no longer flows into the lakes when it rains. The sewers must be separated, and the landowners must therefore lay an extra pipe for rainwater on their own land. This reduces the risk of flooding and many years of pollution of the lakes is stopped. In 2019, LNH water, in close collaboration with Novafos, prepared area plans for priority areas in relation to climate adaptation and efforts for the environment. The efforts in the area plan must, among other things, improve the environmental condition in Søllerød Sø, Vejlesø and Furesøen. A hydraulic analysis of the drainage systems has also been carried out, which will form the basis for political decisions for future drainage strategies. The project includes hydraulic model calculations, climate adaptation, environmental impact, damage calculations and cost-benefit calculations. LNH water has been responsible for and carried out all hydraulic calculations regarding climate adaptation and environmental impact. The project was carried out in good cooperation with Novafos and Birgit Paludan, and deals with hydraulic modeling for drainage systems, taking into account the environment, climate adaptation and landscape conditions. Authority conditions have been taken into account, and material prepared for use by the municipality and Novafos’ communication with stakeholders.

Implementation of a model building system in HOFOR’s drainage basins (2016-2019).

In the period 2016-2019, LNH water has worked closely with HOFOR to implement hydraulic models for HOFOR’s drainage basins. The work has included sewage treatment plants in a drainage model as well as edge models for all sewage treatment plants. LNH water has drawn up consultant standards and a model handbook, and has assisted HOFOR with help with model building and updating models according to DANDAS. Teaching is also provided in e.g. drainage modeling and data management. The project demonstrates LNH Water’s competences in hydraulic modeling and data handling, in-depth understanding of HOFOR’s hydraulic models and ability to work closely with HOFOR over a number of years.