1. General Model Information

Name: Geo-referenced Regional Exposure Assessment Tool for European Rivers

Acronym: GREAT-ER

Main medium: aquatic
Main subject: (eco)toxicology, risk assessment of chemicals, other
Organization level: Not applicable
Type of model: static-algebraic equations
Main application: decision support/expert system, research, education
Keywords: chemicals, risk assessment, river basin, PEC, chemical fate, catchment


Av. van Nieuwenhuyse 4,
box 6,
B-1160, Brussels, Belgium.
Phone: 00 32 2 663 38 12
Fax: 00 32 2 675 36 25
email: martin.holt@ecetoc.org
Homepage: http://www.great-er.org


D. Schowanek, K. Fox, M. Holt, F.R. Schroeder, V. Koch, G. Cassani, M. Matthies, G. Boeije, P. Vanrolleghem, A. Young, G. Morris, C. Gandolfi and T.C.J. Feijtel


The GREAT-ER (Geo-referenced Regional Exposure Assessment Tool for European Rivers) project team has developed and validated an accurate aquatic chemical exposure prediction tool for use within environmental risk assessment schemes. The software system GREAT-ER 1.0 calculates the distribution of predicted environmental concentrations (PECs) of consumer chemicals in surface waters, for individual river stretches as well as for entire catchments. The system uses an ARC/INFO - ArcView (ESRI) based Geographical Information System (GIS) for data storage and visualization, combined with simple mathematical models for prediction of chemical fate. At present, the system contains information for four catchments in Yorkshire, one catchment in Italy, and two in Germany, while other river basins are being added. GREAT-ER 1.0 has been validated by comparing simulations with the results of an extensive monitoring campaign for two 'down-the-drain' chemicals, i.e. the detergent ingredients boron and Linear Alkylbenzene Sulphonate (LAS). GREAT-ER 1.0 is currently being expanded with models for the terrestrial (diffuse input), air and estuarine compartments.

II. Technical Information

II.1 Executables:

Operating System(s): Windows NT/ Arc view

II.2 Source-code:

Programming Language(s): C, Avenue

II.3 Manuals:

GREAT-ER User Manual

II.4 Data:

III. Mathematical Information

III.1 Mathematics

III.2 Quantities

III.2.1 Input

III.2.2 Output

IV. References


V. Further information in the World-Wide-Web

VI. Additional remarks

Last review of this document by: Diederik Schowanek, Mon Oct 1 16:23:51 2001
Status of the document: contributed by Diederik Schowanek
last modified by Tobias Gabele Wed Aug 21 21:44:44 CEST 2002

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