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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.
Surface Water
PRZM, EXAMS, PRZM/EXAMS SHELL, FIRST, GENEEC2, Tier I Rice Model
Ground Water
More Useful Links
- Exposure Modeling Public Meeting - Information
- Input Parameter Guidance
- Positive Attributes and Desired Qualities for Models
- Regional PCA for Drinking Water Assessment
- Golf Course Adjustment Factors
- Relevant SAP Sessions
PRZM
EXAMS
- Executable
- Source Code
- Documentation
- EXAMS Environments examsenv.zip (1kb)
PRZM/EXAMS SHELL
PE Version 4.01
Approved Model Suite
- PE Version 4.01
(August 13, 2003) - PRZM v3.12beta
(May 24, 2001) - EXAMS v2.98.04
(July 18, 2002)
Executable
- Script pe4v01.pl (91 kb)
- Crop Scenarios
- Meteorological Files
Documentation
PE Version 5.0
Approved Model Suite
- PE Version 5.0
(November 15, 2006) - PRZM v3.12.2
(May 12, 2005) - EXAMS v2.98.04.06
(April 25, 2005)
Executable
- Script pe5.pl (109 kb)
- Crop Scenarios
- Meteorological Files
Documentation
- PE 5.0 User's Manual | Microsoft® Office Word Version (8 pp, 88 KB)
- Standard Crop Scenario Metadata | WordPerfect® Version (307 pp, 1438 KB) | Microsoft® Office Word Files
- Nonstandard Crop Scenario Metadata
- Barton Springs Salamander
- Red Legged Frog
- organophosphate | WordPerfect® Version (91 pp, 506 KB)
- n-methyl carbamate | WordPerfect® Version (70 pp, 381 KB)
FIRST
FIRST Version 1.0
- Executable first.exe (73 kb)
- Source Code (Fortran 77) first.for (45 kb)
- Description
- Users Manual
FIRST Models
FIRST Version 1.1.1
- Executable firstv1_1_1.exe (576 kb)
- Source Code (Fortran 77) first_version1_1_1.for (46 kb)
- Description | Microsoft® Office Word Version (9 pp, 67 KB)
- Users Manual | Microsoft® Office Word Version (13 pp, 101 KB)
GENEEC2
- Executable geneec2.exe (80 kb)
- Source Code (Fortran 77) geneec2.for (60 kb)
- Description
- Users Manual
Tier I Rice Model
- Documentation | PDF Version (14 pp, 222KB, About PDF)
SCI-GROW
- Executable sg23.exe (336 kb)
- Source Code (Fortran 90) scigrow.f90 (5 kb)
- Description
- User's Manual for Version 2.3 is under development