We need to remediate the capacity of agricultural landscapes to retain water, nutrients and sediments to make them
more resilient to the increasing frequency of flooding, drought and pollution expected with the climate change. It can
be done by remediating existing narrow ditches into ditches with bevelled slopes, wider channels and two-stage ditches, with a goal of slowing the water down and increasing biogeochemical removal of nutrients and sediments. These remediated ditches are now widespread in the Swedish landscape and needed as almost half of the 90 000 km of open ditches are in poor ecological status. Thus, our project aims at understanding factors controlling cost-effectiveness of remediated dtiches, their design, maintenance, and the impact on downstream water quality. This will provide stakeholders with tools to maximise effectiveness and evaluate the impact of existing and new measures needed to compensate for future pressures on agricultural landscapes.