SWAT2000 is the version incorporated into EPA's BASINS
3.0 release. This version of the model is the culmination of many months of code
review and improvement and incorporates numerous changes.
SWAT99.2 is being made available for modelers wishing
to use the SWAT Windows (non-GIS) interface. Until we update the Windows
interface to run with SWAT2000, the Windows interface for SWAT99.2 and the
source code for SWAT99.2 will remain available from the web site.
We strongly urge new users and current users of
SWAT99.2 to move to SWAT2000 and take advantage of the many improvements made to
the model.
SWAT98.1 is being made available for modelers wishing
to use the SWAT/GRASS interface. Until we update the SWAT/GRASS interface to run
with SWAT2000, the SWAT/GRASS interface for SWAT98.1 and the source code for
SWAT98.1 will remain available from the web site.
We strongly urge new users and current users of
SWAT98.1 to move to SWAT2000 and take advantage of the many improvements made to
the model.
The SWAT2000 documentation is available for download
via HTTP or FTP.
If you are unsure which protocol to use, simply select the first set of links
(HTTP).
The 4th International SWAT Conference was held at
UNESCO-IHE, Delft The Netherlands July 2-6, 2007.
Download the 4th International SWAT Conference Proceedings
3rd International SWAT Conference
The 3rd International SWAT Conference was held in
Zürich, Switzerland in July 2005.
2nd International SWAT Conference
The 2nd International SWAT Conference was held in
Bari, Italy in July 2003. The focus of this conference was to allow an
international community of researchers and scholars to discuss the latest
advances in the use of the SWAT model to assess water quality trends.
Applications
To illustrate the application of SWAT, projects in
which the model has been used are summarized and presented here.
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Identifying Hydrologic Processes in Agricultural Watersheds Using
Precipitation-Runoff Models
-
Evaluating Economic and Environmental Benefifits of Soil and Water
Conservation Measures Applied in Missouri
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Estimating Water Quality, Air Quality, and Soil Carbon Benefits of the
Conservation Reserve Program
-
Missouri Watershed Water Quality Initiative
-
Upper White River Watershed Integrated Economic and Environmental Management
Project
-
Thorsten Pohlert Doctoral Thesis
-
Catchment scale water quantity impact analysis related to life cycle
assessment for forestry and agriculture
-
Watershed Modeling of the Cannonsville Basin Using SWAT2000
Cornell University, NY (
Web site)
-
Pesticide Fate and Transport by SWAT: Atrazine, Metolachlor and Trifluralin
in the Sugar Creek Watershed
USDA-ARS/BRC-TAES, Temple, TX
-
Use of SWAT to
determine flow and chemistry variables for development of ecological
indicators in stream ecosystems
Natural Resources Research Institute, University of Minnesota Duluth
-
Great Salt Plains Reservoir
Department of Biosystems and Ag Engineering, Oklahoma State University
-
Use of SWAT to quantify the impact of changes in soil use on
hydrosedimentologic characteristics of the Joanes river
An impact assessment was also performed in the coastal zone by means of a
qualitative approach based on air photo historic series analysis, stream
data from field tests and in-situ inspection.
Joanes River Watershed, Brazil, Instituto de Geociencias, Universidade
Federal da Bahia
-
Use of county-level NRI data and SSURGO in SWAT simulations of 5 watersheds
Natural Resources Inventory & Analysis Institute, USDA NRCS
-
Coastal Watershed Assessment (Gulf of Maine)
-
Linking GIS and QUAL2E with SWAT
-
Hydrologic Modeling of Rio Grande/Rio Bravo International Watershed
Peer Reviewed Publications
-
Comprehensive review of SWAT model paper
-
SWAT Peer Reviewed Publications List (alphabetized
or
categorized)
-
Zhang, X., R. Srinivasan, and M. Van Liew. 2008. Multi-Site
Calibration of the SWAT Model for Hydrologic Modeling, Transactions of
the ASABE. 51(6): 2039-2049.
Download
-
Schuol, J., K. C. Abbaspour, H. Yang, R. Srinivasan, and A.
J. B. Zehnder. 2008. Modeling blue and green water availability in Africa,
Water Resour. Res., 44, W07406, doi:10.1029/2007WR006609.
Download
-
Bracmort, K. S., M. Arabi, J. R. Frankenberger, B. A. Engel,
J. G. Arnold. 2006. Modeling Long-Term Water Quality Impact of Structural
BMPs. Transactions of the ASABE. 49(2): 367-374.
Download
-
Debele, B., R. Srinivasan, J.-Y. Parlange. 2005. Coupling
upland watershed and downstream waterbody hydrodynamic and water quality
models (SWAT and CE-QUAL-W2) for better water resources management in
complex river basins. Springer Science + Business Media B.V. 2006.
Download
-
Santhi, C., R. Srinivasan, J.G. Arnold, J.R. Williams. 2005.
A modeling approach to evaluate the impacts of water quality management
plans implemented in a watershed in Texas. Environmental Modelling &
Software. 21 (2006): 1141-1157.
Download
Calibration/Validation Publications
Comparison of SWAT & HSPF Literatures
-
Im, S., K. Brannan, S. Mostaghimi, J. Cho. A Comparison of
SWAT and HSPF Models for Simulating Hydrologic and Water Quality Responses
from an Urbanizing Watershed.
Download
-
Nasr, A., M. Bruen, P. Jordan, R.Moles, G. Kiely, P. Byrne
and B. O'Regan. Physically-based, distributed, catchment modelling for
estimating sediment and phosphorus loads to rivers and lakes: issues of
model complexity, spatial and temporal scales and data requirements.
Download
-
Assessment of Modeling Tools and Data Needs for TMDL Plan,
Erie County, NY.
Download
-
Nasr, A., M. Bruen, R. Moles, P. Byrne, B. O'Regan. The
significance of the differences in soil phosphorus representation and
transport procedures in the SWAT and HSPF models and a comparison of their
performance in estimating phosphorus loss from an agriculture catchment in
Ireland.
Download
-
Saleh, A., B. Du. Evaluation of SWAT and HSPF within basins
program for the upper north bosque river watershed in central Texas.
Download
-
Singh, J., H. Vernon Knapp, M. Demissie. Hydrologic Modeling
of the Iroquois River Watershed Using HSPF and SWAT.
Download
AVSWAT (ArcView SWAT)
Organization & Development
AVSWAT has been developed by Mauro Di Luzio and others at the
Texas AgriLife Blackland Research
and Extension Center in Temple, Texas, in collaboration with
Grassland Soil and Water Research
Lab, a USDA-ARS laboratory in Temple, Texas.
AVSWAT is organized in several linked tools grouped in the
following eight components:
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Watershed Delineation
-
Land Use and Soil Definition
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Editing of the model Data Bases
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Definition of the Weather Stations
-
Input Parameterization and Editing
-
Model Run
-
Read and Map-Chart Results
-
Calibration tool
AVSWAT has been developed as an extension of ArcView GIS entirely
in Avenue and dependent by Spatial Analyst and Dialog Designer extensions. The
Spatial Analyst functions are used within the Watershed Delineation and Landuse
and Soil Definition components while the Dialog Designer controls have been used
to build up all the user interface tools.
Updates
AVSWAT-X for SWAT version 2005:
AVSWAT2000 version 1.0 for SWAT version 2000:
*AVSWAT2000 is only available for download through FTP. If you
are unable to download, please
contact someone on our development team.
Registration
By registering you are placed in the registered users list that is
also used as support list.
References
Di Luzio, M., Srinivasan R., Arnold J.G. 2004. A GIS-Coupled
Hydrological Model System for the Watershed Assessment of Agricultural Nonpoint
and Point Sources of Pollution. Transactions in GIS, 8(1): 113-136.
Di Luzio, M., R. Srinivasan, J.G. Arnold , and S.L. Neitsch. 2002.
Soil and Water Assessment Tool. ArcView GIS Interface Manual: Version 2000.
GSWRL Report 02-03, BRC Report 02-07, Published by Texas Water Resources
Institute TR-193, College Station, TX. 346p.
ArcSWAT
Download ArcSWAT for SWAT 2005 Version
For help installing ArcGIS 9.2 and ArcSWAT, read the
installation instructions and the
ArcSWAT FAQ.
ArcSWAT 2.3.4 for ArcGIS 9.3 SP1 Install (69 MB), released
9/21/2009
HTTP Download
FTP Download
Release Notes
ArcSWAT 2.1.6 for ArcGIS 9.2 SP6 Install (69 MB), released
9/21/2009 (final release for ArcGIS 9.2)
HTTP Download
FTP Download
Release Notes
ArcSWAT 2.0.0 for ArcGIS 9.2 Install (76 MB), released
2/15/2008
HTTP Download
FTP Download
Release Notes
ArcSWAT 1.0.7 for ArcGIS 9.1 Install (74 MB), released
2/21/2008 (final release for ArcGIS 9.1)
HTTP Download
FTP Download
SWATeditor is a companion software to ArcSWAT.
SWATeditor reads the project database generated by ArcSWAT interface to edit
swat input files, execute SWAT run, perform sensitivity, autocalibration and
uncertainty analysis. This is a standalone program and does not require ArcGIS,
thus helping users of ArcSWAT to share their project with others that do not
have ArcGIS or much experience with GIS in general. In order to use the
SWATeditor, the users need to have created an ArcSWAT project under the "write
all" menu.
SWATeditor 2.1.5 Install (21 MB), released 6/18/2009
HTTP Download
FTP Download
SWATeditor 2.0.0 Install (20 MB), released 3/7/2008
HTTP Download
FTP Download
Key Procedures
-
Load or select the ArcSWAT extension
-
Delineate the watershed and define the HRUs (including landuse, soil,
and slope as a unique HRU)
-
(Optional) Edit SWAT databases
-
Define the weather data
-
Apply the default input files writer
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(Optional) Edit the default input files
-
Set up (requires specification of simulation period, PET calculation
method, etc.) and run SWAT
-
(Optional) Apply a calibration tool
-
(Optional) Analyze, plot and graph SWAT output (VizSWAT)
System Requirements
The SWAT2005/ArcSWAT 1.0 Interface requires:
Hardware:
-
Personal computer using a Pentium IV processor or higher, which runs at
2 gigahertz or faster
-
1 GB RAM minimum
-
500 megabytes free memory on the hard drive for minimal
installation and up to 1.25 gigabyte for a full installation (including
sample datasets and US STATSGO data)
Software (ArcSWAT 1.0 for ArcGIS 9.1 version):
-
Microsoft Windows XP, or Windows 2000 operating system with most recent
kernel patch*
-
ArcGIS-ArcView 9.1 with service pack 2 (Build 766)
-
ArcGIS Spatial Analyst 9.1 extension
-
ArcGIS Developer Kit (usually found in C:\Program
Files\ArcGIS\DeveloperKit\)
-
ArcGIS DotNet support (usually found in C:\Program Files\ArcGIS\DotNet\)
-
Microsoft .Net Framework 1.1
-
Adobe Acrobat
Reader version 7 or higher
* Microsoft constantly updates the different
versions of windows. This interface was developed with the latest version of
Windows and may not run with earlier versions. Patches are available from
Microsoft.
ArcSWAT Group
This group is established to exchange ideas, help each other and
report any bugs related to the interface.
SWAT Input Checker Program
The checker program runs in the DOS environment. To use the
program: open a DOS window, change to the directory containing the SWAT input
data files, type the pathway to the checker.exe file that you downloaded and hit
enter. A file named ranges.out will be created that contains the results of the
input analysis. A file named defaults.out will be created that lists model
defaults when variables are set to zero by the user.
The SWAT/ArcView interface has the checker program incorporated
into the interface.
To download the checker files from this Web site (HTTP),
follow the links below.
To download the above files from our FTP server,
follow the links below.
Potential Heat Unit Program
A PDF file is included in the download which explains the concept
of heat units and the methodology used to calculate the total number of heat
units required to bring a plant to maturity.
This program must be run in the MSDOS environment.
To download the PHU files from this Web site (HTTP),
follow the links below.
To download the above files from our FTP server,
follow the link below.
Baseflow Filter Program
There are many baseflow filters available and the user is by no
means required to use this particular baseflow filter with SWAT. However, we
have found that model results are significantly improved if the ratio of surface
runoff to baseflow is correct. We strongly recommend that some type of baseflow
filter is used to provide an average annual ratio of baseflow to surface runoff
for the calibration of model runs.
Links to Related Software
BASINS Software:
Additional BASINS Documentation:
SWAT Output Analyzers:
SWAT 2005 READOUT Program
SWAT 2000 READOUT Program
Other Models Developed from SWAT:
