IWRA World Water Congress 2008 Montpellier France
1. Water availability, use and management
Ph. Le Grusse
spatial water management, agriculture, modelling, participation,
Spatial water management consists in coordinating water fluxes management with the
management of land areas which generate or regulate these fluxes (Narcy et Mermet, 2003). Agricultural lands and
activities are of major importance in this spatial water management since they represent a large proportion of the
overall territories and they have a large impact on water withdrawals and water pollution. It is then essential to
represent correctly agricultural activities in water management and planning tools.
of the APPEAU project is to improve decisions in water management and planning at territorial scales (catchments,
irrigated areas, etc.). The project aims more specifically to develop methods and tools based on mathematical
models to evaluate scenarios for a better joint planning of agricultural activities and water resources.
The project includes three kinds of activities conducted with two different approaches.
- developing and implementing mathematical models for a better water quantity and water
- building scenarios regarding agricultural context changes (particularly changes in cropping
systems and cropping systems patterns) or economical and regulatory context changes.
- Evaluating these
scenarios using the mathematical models developed.
The first approach consists in developing methods and tools
with targeted partners, on two specific questions: the water scarcity in an irrigated catchment (WP1) and the
remediation of water pollution in small catchments (WP2). Partners are local institutions and/or water users
associations. They are involved in designing, implementing and/or validating models and in building and/or evaluating
scenarios. All partners are aware of the progress in the work.
The second approach (WP3) consists in conducting
the three activities (modelling, and building and evaluating scenarios) in a collective organisation, gathering various
actors and institutions of the study area. This implies to represent all interactions (between actors, between processes
and between processes and actors) in the modelling.
The expected methods and tools
produced by each work package are detailed in 3 other posters. At the project level, the expected result
- the complementarity of approaches: how models developed for specific questions can
enhance the development of tools in participation? How participative approaches can orientate the development of
models and the choice of scenarios to be evaluated?
- the complementarity of models: in which conditions
hydrological models developed for water pollution remediation can improve integrated water management models
developed for water allocation?
- the advance in common methodologies: which trade-off between a
correct representation of the reality and modelling simplifications? how building and evaluating scenarios for an
efficient collective action?
This project aims at making several research teams of various
disciplines and institutions sharing there know-how on water management in order to decrease the environmental
impact of agriculture. It is funded by the French national Research Agency (ANR) within the “Agriculture and
Sustainable Development” (ADD) Program.