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Open AccessArticle

A New National Water Quality Model to Evaluate the Effectiveness of Catchment Management Measures in England

1
JBA Consulting, Mersey Bank House, Second Floor, Barbauld Street, Warrington WA1 1WA, UK
2
Swedish Meteorological and Hydrological Institute (SMHI), SE-601 76 Norrköping, Sweden
3
Environment Agency, Deanery Road, Bristol BS1 5AH, UK
*
Author to whom correspondence should be addressed.
Water 2019, 11(8), 1612; https://doi.org/10.3390/w11081612
Received: 10 July 2019 / Revised: 30 July 2019 / Accepted: 1 August 2019 / Published: 3 August 2019
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Abstract

This investigation reports on a new national model to evaluate the effectiveness of catchment sensitive farming in England, and how pollution mitigation measures have improved water quality between 2006 and 2016. An adapted HYPE (HYdrological Predictions for the Environment) model was written to use accurate farm emissions data so that the pathway impact could be accounted for in the land phase of transport. Farm emissions were apportioned into different runoff fractions simulated in surface and soil layers, and travel time and losses were taken into account. These were derived from the regulator’s ‘catchment change matrix’ and converted to monthly load time series, combined with extensive point source load datasets. Very large flow and water quality monitoring datasets were used to calibrate the model nationally for flow, nitrogen, phosphorus, suspended sediments and faecal indicator organisms. The model was simulated with and without estimated changes to farm emissions resulting from catchment measures, and spatial and temporal changes to water quality concentrations were then assessed. View Full-Text
Keywords: water quality model; Catchment Sensitive Farming; HYPE model; diffuse pollution water quality model; Catchment Sensitive Farming; HYPE model; diffuse pollution
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Hankin, B.; Strömqvist, J.; Burgess, C.; Pers, C.; Bielby, S.; Revilla-Romero, B.; Pope, L. A New National Water Quality Model to Evaluate the Effectiveness of Catchment Management Measures in England. Water 2019, 11, 1612.

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