Model:SLAMM 6.7




Also known as Sea Level Affecting Marshes Model
Model type Single
Model part of larger framework
Incorporated models or components:
Spatial dimensions 1.5D, 2D
Spatial extent Landscape-Scale, Regional-Scale, Watershed-Scale
Model domain Terrestrial, Hydrology, Coastal, Marine, Geodynamic, Climate
One-line model description The Sea Level Affecting Marshes Model (SLAMM)
Extended model description The Sea Level Affecting Marshes Model (SLAMM) simulates the dominant processes involved in

wetland conversions and shoreline modifications during long-term sea level rise. Tidal marshes can be among the most susceptible ecosystems to climate change, especially accelerated sea level rise (SLR).


First name Jonathan
Last name Clough
Type of contact Model developer
Institute / Organization Warren Pinnacle Consulting, Inc.
Postal address 1 PO BOX 315
Postal address 2
Town / City Waitsfield
Postal code 05673
State Vermont
Country United States
Email address

Supported platforms Windows
Other platform
Programming language
Other program language
Code optimized Multiple Processors
Multiple processors implemented Shared memory
Nr of distributed processors
Nr of shared processors 32
Start year development 1986
Does model development still take place? No
If above answer is no, provide end year model development
Code development status Only maintenance
When did you indicate the 'code development status'? 2020
Model availability As code, As teaching tool
Source code availability
(Or provide future intension)
Through web repository
Source web address
Source csdms web address
Program license type CPL
Program license type other
Memory requirements >4GB recommended
Typical run time 1 hour to 24 hours

Describe input parameters Slope Data: Slope of each cell, used to calculate partial changes in cell composition. As

derived from the Digital Elevation Map. (units are degrees) • DEM Data: Digital Elevation Map data. Preferrable derived from LiDAR. Contour data (from the National Elevation Database, for example) are typically inappropriate to use for calculating sea level rise effects but serve as data in areas where more precise data are not available ( in this case the elevation preprocessor module may be used). (units are meters) • NWI Data: National Wetlands Inventory categories. Dominant wetland category for each cell is converted into SLAMM categories. This is also used to refine elevation estimates for each cell. Table 4 provides the crosswalk information for Cowardin codes to SLAMM categories • Dike Data: Boolean defining whether each cell is protected by dikes or not. This is available as an attribute of the NWI data, special modifier “h.” • IMP Data: Percent impervious raster, derived from National Land Cover Dataset. Dry land with percent impervious greater than 25% is assumed to be “developed dry land.”

Input format ASCII, Binary
Other input format
Describe output parameters Land cover and elevation prediction rasters under SLR conditions through 2100.
Output format ASCII, Binary
Other output format
Pre-processing software needed? No
Describe pre-processing software
Post-processing software needed? Yes
Describe post-processing software GIS capable of reading ASCII output rasters
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? Yes
Upload manual if available: Media:SLAMM 6.7 Technical Documentation.pdf
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
Citation indices SLAMM 6.7
Nr. of pubs: 2
Citations: 13
h-index: 1
Qrcode SLAMM 6.7.png
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Citation indices SLAMM 6.7
Nr. of pubs: 2
Citations: 13
h-index: 1

Featured publication(s)YearModel describedType of ReferenceCitations
Wu, Wei; Yeager, Kevin M.; Peterson, Mark S.; Fulford, Richard S.; 2015. Neutral models as a way to evaluate the Sea Level Affecting Marshes Model (SLAMM). Ecological Modelling, 303, 55–69. 10.1016/j.ecolmodel.2015.02.008
(View/edit entry)
2015SLAMM 6.7
Model application 13
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Input Files

Output Files