Water Resource Associates

INCA: Integrated Catchment Model

INCA is now sold by WRA with training courses provided by Prof. Paul Whitehead.

INCA is a dynamic, processed-based model providing representation of flow and water quality with plant and soil system dynamics and in-stream biogeochemical and hydrological dynamics. The INCA model has been used successfully to assess a wide range of environmental change issues in catchments including:

  • Changing pollution environments including point and diffuse pollution. 
  • Eutrophication assessments
  • Environmental impact assessment
  • Catchment management strategies
  • Land use and population change
  • Climate change 
inca, wra, paul whitehead, andrew wade, water resource associates
inca, wra, paul whitehead, andrew wade, water resource associates
The model has been applied to a wide range of key UK and European ecosystems and many large river basins around the world, including the Ganges, Brahmaputra, Mekong and the Volta. The INCA model has been developed over 20 years as part of many projects funded by the UK research councils (NERC, EPSRC, SSRC), Government departments and agencies (DEFRA, EA), EU funded projects (EU- INCA and EU-Eurolimpacs) and industry (National Power, Thames Water, Anglian Water etc.)
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  • 1. Overview
  • 2. INCA Methods
  • 3. Versions and Applications
  • 4. Case Studies
  • 5. Publications

Footnote:

Prof. Paul Whitehead has undertaken an extensive INCA Flow and Water Quality Modelling study in the Ganges, Brahmaputra and Meghna River systems to investigate the impacts of climate change on river discharge, nitrate, ammonia and phosphorus into the future. This is the most complex INCA modelling study that has been attempted and results suggest increased monsoon flows and some reduced dry weather flows, or with extended drought periods. Plus nutrient concentrations would fall due to the extra dilution effects in monsoon periods. The effects of socio-economic change has also been investigated to evaluate the Ganges clean-up plan and to study the impacts of proposed water transfers upstream of Bangladesh. The clean-up plan if implemented would improve the water quality reducing nutrient loads entering Bangladesh. The water transfers would have a major effect, if implemented in full, significantly reducing flows into the delta system and the Bay of Bengal.

Download the Presentation

Read the Published Papers:

Impacts of climate change and socio-economic scenarios on flow and water quality of the Ganges, Brahmaputra and Meghna (GBM) river systems: low flow and flood statistics. P. G. Whitehead et al.

Dynamic modeling of the Ganga river system: impacts of future climate and socio-economic change on flows and nitrogen fluxes in India and Bangladesh, P. G. Whitehead et al.
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