Also known as RAFEM
Model type Single
Model part of larger framework
Note on status model
Date note status model
Incorporated models or components:
Spatial dimensions 2D
Spatial extent Continental, Regional-Scale
Model domain Terrestrial
One-line model description River Avulsion and Floodplain Evolution Module
Extended model description Morphodynamic river avulsion model, designed to be coupled with CEM and SEDFLUX3D
Name Katherine Ratliff
Type of contact Model developer
Institute / Organization Environmental Protection Agency (US EPA)
Postal address 1
Postal address 2
Town / City Research Triangle Park
Postal code 27707
State North Carolina
Country United States
Email address

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


Other program language
Code optimized
Multiple processors implemented
Nr of distributed processors
Nr of shared processors
Start year development 2014
Does model development still take place? Yes
If above answer is no, provide end year model development
Code development status Active
When did you indicate the 'code development status'? 2020
Model availability
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
Output format
Other output format
Pre-processing software needed? No
Describe pre-processing software
Post-processing software needed? No
Describe post-processing software
Visualization software needed? No
If above answer is yes
Other visualization software

Describe processes represented by the model
Describe key physical parameters and equations
Describe length scale and resolution constraints
Describe time scale and resolution constraints
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? No
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 Yes
WMT component No but possible
PyMT component Yes
Is this a data component
Can be coupled with:
Model info
Nr. of publications: 1
Total citations: 24
h-index: 1
m-quotient: 0.17
Qrcode RAFEM.png
Link to this page


The River Avulsion and Floodplain Evolution Model (RAFEM) is a cellular model that simulates river and floodplain morphodynamics over large space and timescales. Cell size is larger than the channel belt width, and natural levees, which maintain a bankfull elevation above the channel bed, exist within a river cell. The river course is determined using a steepest-descent methodology, and erosion and deposition along the river profile are modeled as a linear diffusive process. An avulsion occurs when the riverbed becomes super-elevated relative to the surrounding floodplain, but only if the new steepest-descent path to sea level is shorter than the prior river course. If the new path to sea level is not shorter, then a crevasse splay is deposited in the adjacent river cells. The model has been designed to couple with the Coastline Evolution Model through the CSDMS Basic Model Interface.



Nr. of publications: 1
Total citations: 24
h-index: 1
m-quotient: 0.17

Featured publication(s)YearModel describedType of ReferenceCitations
Ratliff, Katherine M.; Hutton, Eric H. W.; Murray, A. Brad; 2018. Exploring Wave and Sea‐Level Rise Effects on Delta Morphodynamics With a Coupled River‐Ocean Model. Journal of Geophysical Research: Earth Surface, 123, 2887–2900. 10.1029/2018JF004757
(View/edit entry)
2018 RAFEM
Model overview 24
See more publications of RAFEM



Input Files

Output Files