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Please use this identifier to cite or link to this item: http://hdl.handle.net/10197/2276

Title: A comparison of SWAT, HSPF and SHETRAN/GOPC for modelling phosphorus export from three catchments in Ireland
Authors: Nasr, Ahmed Elssidig
Bruen, Michael
Jordan, Philip
Moles, Richard
Kiely, Gerard
Byrne, Paul
Keywords: Phosphorus
SWAT
HSPF
SHETRAN
GOPC
Water--Pollution
Water--Phosphorus content
Hydrologic models
Issue Date: 2-Jul-2012
Publisher: Elsevier
Abstract: Recent extensive water quality surveys in Ireland revealed that diffuse phosphorus (P) pollution originating from agricultural land and transported by runoff and subsurface flows is the primary cause of the deterioration of surface water quality. P transport from land to water can be described by mathematical models that vary in modelling approach, complexity and scale (plot, field and catchment). Here, three mathematical models (SWAT, HSPF and SHETRAN/GOPC) of diffuse P pollution have been tested in three Irish catchments to explore their suitability in Irish conditions for future use in implementing the European Water Framework Directive. After calibrating the models, their daily flows and total phosphorus (TP) exports are compared and assessed. The HSPF model was the best at simulating the mean daily discharge while SWAT gave the best calibration results for daily TP loads. Annual TP exports for the three models and for two empirical models were compared with measured data. No single model is consistently better in estimating the annual TP export for all three catchments.
URI: http://hdl.handle.net/10197/2276
Other Identifiers: http://hdl.handle.net/10197/2276
Appears in Collections:Teagasc funded research
Agricultural Catchments

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