APEX

Agricultural Policy / Environmental eXtender (APEX) Model

The Agricultural Policy / Environmental eXtender (APEX) model is a rural region watershed model designed to determine the relationships between land use and watershed runoff dynamics. Modelled processes include rainfall-runoff dynamics, nutrient cycling, flow routing, erosion dynamics, and pesticide use.

Developer
NRCS & Texas A&M
Model Information
For more information about this model, go to epicapex.tamu.edu
Spatial Resolution
The spatial resolution is on the sub-basin to basin scale, and then further subdivided into cells. Cell size is defined by land areas with homogeneous characteristics.
Temporal Resolution
Time step is daily and simulation duration is on the order of years.
Outputs
Outputs include flow routing, nutrient cycling, erosion processes, economic assessments.
Intended User
practitioner
Model Type
watershed
Inclusion of Climate Change
Climate conditions are explicitly incorporated through model input files.
Geographic Region
generalized
Data Requirements
data provided by the user
Source Code Availability
open source
Dimensions
3d
Computational Burden
medium
Scenario Modeling
batch mode likely
Coding Language
FORTRAN
Operating System
dos
Mathematical Approach
deterministic
Maintenance Plan
maintained
Date of Last Known Update
11-Oct-18
User Manual
go to documentation at my.syncplicity.com