Also known as
Model type Modular
Model part of larger framework
Note on status model
Date note status model
Incorporated models or components:


Spatial dimensions 2D
Spatial extent Reach-Scale, Patch-Scale
Model domain Hydrology, Terrestrial
One-line model description Add-on package to ANUGA with modules for sediment transport and vegetation drag
Extended model description ANUGA is a hydrodynamic model for simulating depth-averaged flows over 2D surfaces. This package adds two new modules (operators) to ANUGA. These are appropriate for reach-scale simulations of flows on mobile-bed streams with spatially extensive floodplain vegetation.

The mathematical framework for the sediment transport operator is described in Simpson and Castelltort (2006) and Davy and Lague (2009). This operator calculates an explicit sediment mass balance within the water column at every cell in order to handle the local disequilibria between entrainment and deposition that arise due to strong spatial variability in shear stress in complex flows.

The vegetation drag operator uses the mathematical approach of Nepf (1999) and Kean and Smith (2006), treating vegetation as arrays of objects (cylinders) that the flow must go around. Compared to methods that simulate the increased roughness of vegetation with a modified Manning's n, this method better accounts for the effects of drag on the body of the flow and the quantifiable differences between vegetation types and densities (as stem diameter and stem spacing). This operator can simulate uniform vegetation as well as spatially-varied vegetation across the domain. The vegetation drag module also accounts for the effects of vegetation on turbulent and mechanical diffusivity, following the equations in Nepf (1997, 1999).


sediment transport, vegetation, flood,

Name Mariela Perignon
Type of contact Model developer
Institute / Organization University of Colorado - CSDMS
Postal address 1
Postal address 2
Town / City Boulder
Postal code 80309
State Colorado
Country United States
Email address

Supported platforms
Unix, Linux, Mac OS, Windows
Other platform
Programming language


Other program language
Code optimized Single Processor
Multiple processors implemented
Nr of distributed processors
Nr of shared processors
Start year development
Does model development still take place? Yes
If above answer is no, provide end year model development
Code development status
When did you indicate the 'code development status'?
Model availability As code
Source code availability
(Or provide future intension)
Through web repository
Source web address
Source csdms web address
Program license type BSD or MIT X11
Program license type other
Memory requirements
Typical run time

Describe input parameters
Input format
Other input format
Describe output parameters NetCDF file (.sww) of x, y, elevation, flow depth, x and y momentum, and sediment concentration (all optional)
Output format
Other output format NetCDF
Pre-processing software needed? No
Describe pre-processing software
Post-processing software needed? No
Describe post-processing software
Visualization software needed? Yes
If above answer is yes
Other visualization software ANUGA viewer or your own code (files are easy to open)

Describe processes represented by the model sediment transport, vegetation drag
Describe key physical parameters and equations
Describe length scale and resolution constraints
Describe time scale and resolution constraints Internal timestep is determined by ANUGA for numerical stability (in seconds). Output timestep is set by the user. Simulations are realistically limited to a few model hours.
Describe any numerical limitations and issues

Describe available calibration data sets
Upload calibration data sets if available:
Describe available test data sets
Upload test data sets if available:
Describe ideal data for testing

Do you have current or future plans for collaborating with other researchers?
Is there a manual available? Yes
Upload manual if available:
Model website if any
Model forum / discussion board

This part will be filled out by CSDMS staff

OpenMI compliant No but possible
BMI compliant No but possible
WMT component No but possible
PyMT component
Is this a data component
Can be coupled with:
Model info
Nr. of publications: --
Total citations: 0
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Qrcode AnugaSed.png
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Input Files

Output Files