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Analytical Methods & Procedures

Water Models

About Water Models

Scientists in the Office of Pesticide Programs (OPP) in the Environmental Protection Agency (EPA) frequently use simulation models to predict pesticide concentrations in surface and ground water for use in both human health and aquatic ecological exposure assessments. Listed below are links to executable versions of each of the models currently in use, plus links to the documentation for these models.

Focus	Download Executable	Documentation
		About Water Models	Input Parameter Guidance	Fate DER Templates
Surface Water	PRZM version 3.12 (May 24, 2001) is available from Dr. Lawrence Burns , ORD Athens This version of the model is not currently available through the CEAM web site.	PRZM version 3.12 (May 24, 2001) is available from Dr. Lawrence Burns , ORD Athens This version of the model is not currently available through the CEAM web site.
Surface Water	available on EXAMS Web site	documentation available on EXAMS Web site
Surface Water	EFED PRZM/EXAMS SHELL script PRZM crop scenarios (ZIP file 242KB) PRZM MET FILE	Updated EFED PRZM/EXAMS SHELL Information EFED PRZM/EXAMS SHELL Description PRZM crop scenario metadata(download WPD file 1468KB)		EFED PRZM/EXAMS SHELL Public Instructions Regional PCA for Drinking Water Assessment
Surface Water	FIRST executable	FIRST Description		FIRST Users Manual
Surface Water	GENEEC2 executable	GENEEC2 Description		GENEEC2 Users Manual
Ground Water	SCI-GROW executable ^*Version 2.3 approved as of August 6, 2003	SCI-GROW Description		^*User's Manual for Version 2.3 is under development

Exposure Modeling Work Group (EMWG) Information and Products

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