Research and analysis

Pilot catchment study of nutrient sources: control options and costs

The use of catchment scale plans to identify the best place to invest to reduce river eutrophication derived from diffuse sources



Surveys of the literature showed that, although a number of models were available for predicting the concentration of phosphorus in rivers from diffuse agricultural sources, most were too complicated and required too much input data to be acceptable for routine use in a wide range of catchments. The search confirmed that export-coefficient modelling was likely to be the most useful approach for routine use within an organisation such as the Environment Agency.