Co-click'eau, a participatory method for land-use scenarios in water catchments

Agricultural use of pesticides and nitrogen has negatively impacted drinking water quality. In France, 1000 water catchments now face a legal obligation to develop and implement action plans to reduce such pollution. Unfortunately, the action plans suffer from delays, are developed mechanically to strictly comply with a preset list of measures resulting in minimal changes in practices. Their impact is generally insufficient to preserve or restore water quality. In this context, the Co-click'eau method was proposed to elicit the development of locally-relevant catchment action plans by drawing on stakeholder participation and modeling for the design and assessment of scenarios on land-use changes at the whole-catchment scale. The method was tested in 2011-2012 in three different catchments. Our results show that it has a significant role to play in facilitating the development of catchment-specific action plans for which local stakeholders can feel a sense of ownership and commitment. Co-click'eau is also valuable in enhancing collective action by eliciting a process where local stakeholders share their knowledge and explore possible futures. Participation of a wide diversity of local stakeholders, along with a flexible modeling approach makes it possible to take into account local constraints and helps to break down local lock-ins.