Catchment Management Modelling Platform

Case Study 6

Effects of input data quality and quantity on evaluation of land management policies and agri-environment interventions at catchment to national scales


Jack Cosby1; Andy Wade2; Amy Thomas1.

1Centre for Ecology and Hydrology, Bangor; 2Reading University.

Stakeholder Representatives

Paul Whitehead, Oxford University.

Forum issues addressed by case study

How can I know if land management will be effective?

  • What is the effect of different land management interventions on water quality?
  • Will what I’m doing provide secondary or wider benefits in the catchment for carbon, biodiversity or other ecosystem functions?

Does it matter what data and models I use in planning /assessing catchment management? Can the answers they provide be transferred to other catchments?

  • Is the answer sensitive to the quality and quantity of input data?
  • Is the answer sensitive to different models?

How can I look at sensitivity / impacts on different catchment functions / services?

  • Is freshwater biology more or less sensitive than chemistry? 
What did we find?

This case study examines the sensitivity / uncertainty in outputs of models at various scales resulting from differences or uncertainties in models and input driving data. Three cases will be considered: A) uncertainties arising from the model structure being used; B) uncertainties arising from the data being used; and C) uncertainties arising from drivers used in future scenarios.


How did we do it? (Synopsis)

Results Available Soon.

How did we do it? (Full)

Results Available Soon.

What did this case study show? (Synopsis)

Results Available Soon.

What did this case study show? (Full)

Results Available Soon.

What were the benefits of using more than one model?

Results Available Soon.

What were the lessons learned about how to apply the models?

Results Available Soon.

What pre- and post-processing was done on the input and output data?

Results Available Soon.

W​hat datasets were used in the case study?

Results Available Soon.

Project view
Stakeholder view

Conwy Catchment, North Wales and England

  • Management outcome
  • Other services
  • Confidence levels
  • Phosphorus
  • Nitrate
  • Catchment / National
  • LUCI
  • INCA-Pathogens

Improved access to and integration among data and models to address key questions in catchment management for water quality and wider ecosystem services, providing a more holistic view to inform scientific understanding and policy development.


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