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A comparison of SWAT, HSPF and SHETRAN/GOPC for modelling phosphorus export from three catchments in Ireland
Date Issued
2007-03
Date Available
2010-07-30T14:17:46Z
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.
Sponsorship
Other funder
Other Sponsorship
Environmental Protection Agency
Teagasc
Type of Material
Journal Article
Publisher
Elsevier
Journal
Water Research
Volume
41
Issue
5
Start Page
1065
End Page
1073
Copyright (Published Version)
2006 Elsevier Ltd
Keywords
Subject – LCSH
Water--Pollution
Water--Phosphorus content
Hydrologic models
Web versions
Language
English
Status of Item
Peer reviewed
ISSN
0043-1354
This item is made available under a Creative Commons License
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