Groundwater–Surface Water Interaction: Process Understanding, Conceptualization and Modelling (Proceedings of Symposium HS1002 at IUGG2007, Perugia, July 2007). IAHS Publ. 321, 2008, 181-188.

Coupled modelling of groundwater and surface water for

renaturation planning in the National Park Lower Odra

BERTRAM L. MONNINKHOFF^1,2 & STEFAN O. KADEN^1,2

1 Hohai University, College of Hydrology and Water Resources, 1 Xikang Road, Nanjing 210098, China

b.monninkhoff@dhi-wasy.de

2 WASY GmbH, Institute for Water Resources Planning and Systems Research, Waltersdorfer Straße 105, 12526 Berlin, Germany

Abstract For the National Park Lower Odra a feasibility study has been carried out in order to verify the suggestions made in a maintenance and development plan. This plan was developed in order to re-establish the natural original function of the alluvial valley. Within the study the possibility to extend the present flooding period for some of the polders in the valley, as well as the possibility to create a continuous connection between one of the polders and the surrounding rivers, had to be verified. Using a coupled surface and groundwater model based on the components MIKE11 and FEFLOW, it was concluded that both suggestions are feasible and can even be combined. Within the project the coupling module IfmMIKE11 was successfully extended for the coupling of polder areas.

Key words interaction; groundwater; surface water; coupling; renaturation