SWAT

Soil and Water Assessment Tool

The Soil and Water Assessment Tool (SWAT) is a scalable watershed model that evaluates land use, management strategies and climate change. Modelled processes include rainfall-runoff dynamics, water quality dynamics, crop growth effects, nutrient cycling and sediment transport mechanisms.

Developer
USDA ARS
Model Information
For more information about this model, go to swat.tamu.edu
Spatial Resolution
The spatial resolution is defined on the sub-basin to basin scale. Basins are divided further based on dominate land use or other processes that impact the landscape.
Temporal Resolution
Model uses long run simulation durations. Time steps are on the order of hours for rainfall-runoff calculations and days for other processes.
Outputs
Outputs include water quality, nutrient cycling, water flow routing characteristics.
Intended User
practitioner
Model Type
watershed
Inclusion of Climate Change
Climate conditions are included through adjustment of climate and weather parameters. Built-in weather generator is also included.
Geographic Region
generalized
Data Requirements
data provided by the user
Source Code Availability
open source
Dimensions
3d
Computational Burden
medium
Scenario Modeling
scenarios by hand only
Coding Language
FORTRAN, GUI
Operating System
not applicable
Mathematical Approach
deterministic
Maintenance Plan
maintained
Date of Last Known Update
11-Oct-19
User Manual
go to documentation at swatplus.gitbook.io