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AlterrAqua, a regional GIS based modelling system
Gerrit Hendriksen1, Frank van der Bolt1, Pim
Dik1, Piet Groenendijk1, Paul van Walsum and Ab
Veldhuizen1

• Introduction AlterrAqua
• The toolbox AlterrAqua enables users to implement
  regional hydrological models using a set of
  standard databases (such as soil, land use and
  elevation maps) and local data, for instance
  derived from water boards.
• Based on the hydrological model chosen AlterrAqua
  is set up with a set of predefined forms and
  tools that control data consistency checks, model
  schematization, output presentation.
• Models as SIMGRO, multi-SWAP, Animo and SOBEK can
  be provided with specific input necessary to run
  the model.

• Introduction SIMGRO
• Integrated water resources management often
  requires an integrated model to predict
  interactions between plant-atmosphere, soil
  water, groundwater and surface water.
• SIMGRO supports the evaluation of water
  management, climate change impacts, policy
  options and real time control.
• SIMGRO is an advanced rainfall-runoff model based
  upon a number of modules
• Modelling of surface water
• Modelling of the unsaturated zone
• Modelling of the saturated zone

Geographical data
Import schematised models
Consistency Checks, parameterisation,
calibration
presentation
Post Processing Impact Scenario study
AlterrAqua
Hydrological model

• Applications
• prediction of changes in groundwater tables
• prediction of fluctuations in surface water
  discharges
• prediction of effects of (water) policy on
  inundation frequencies

• prediction of crop damage related to climate or
  policy
• testing flood risks related to land use and
  water policy

climate variant
present situation
differences in inundation frequencies due to
climate change
1) Alterra, Green World Research, Centre for
Water and Climate, P.O. Box 47, 6700 AA
Wageningen, The Netherlands. 2) Multi-SWAP
simulates integrated water and solute transport
at catchment scale 3) Animo models nutrient
leaching to ground - and surface water