Triangular Edge Cells in EEMS
A curvilinear orthogonal grid, like that used in EFDC, can accurately…
Mass Balance Calculation for Waterbodies using EEMS
Modeling the waterbody requires the estimation of mass balance of all the constituents that enter and exit the modeling domain…
Impact of Elevation on DO Saturation
A commonly recognized phenomenon is that as the altitude increases, the atmospheric pressure decreases. Decreased atmospheric pressure leads to a decrease…
Selecting Hydrodynamic and Water Quality Modeling Software
The modeling software you select for your project depends on project objectives, budget, schedule, and available programming resources. A general set of modeling…
A Review of EFDC Versions
Over the years, multiple versions of EFDC developed and supported by different organizations have come become available….
Single-layer vs. Multi-layer Simulations in EEMS
The selection of single-layer vs. multi-layers for simulating hydrodynamic and water quality depends upon…
High-Resolution Marine Cadastre AIS Data for Propwash Modeling
Propeller wash (propwash) causes sediment scour in the seabed that can threaten the safety of structures….
Enhancements to the EEMS GUI
As we added new features to EFDC+, our Graphical User Interface (GUI), EFDC+ Explorer (EE) has also changed to…
Transforming Node Time Series Model Result to EE Field File
There can be multiple reasons when a modeler needs to incorporate results from another model. It can be the lack of direct measurement of specific properties or…
NetCDF-CF and UGRID Formats
The Network Common Data Form (NetCDF) data format was originally intended to create, access, and share array-oriented data in a form that is self-describing and portable…
Creating Great Animations in EEMS
Communicating your modeling results to a wide variety of audience is as important as developing a good model. Animating the processes is one of the most powerful ways in which a modeler…
Modeling Climate Change Impacts Using EE
Climate change is an accepted reality, so most infrastructure development and maintenance will require the evaluation of possible impacts of climate change.
Generating Field Files for EFDC+ from External Data using Python
EFDC+ support input of spatially and temporally varying boundary conditions as field files, which means user can assign…
Automated Nested Model Configuration
EEMS has been enhanced with a new feature which helps you develop nested EFDC+ models. This tool extracts pertinent…
Ask the Experts: What is the correct wind direction convention to use in EFDC?
While the standard meteorological convention for the wind direction is the compass direction that the wind is coming from…
Graphics in Reports & Publications
Most people who read to obtain information prefer to have the text supplemented with visuals…
Subscription or Perpetual Licensing
In the old days, when you purchased software, there was a tangible element: You received a package of one or more floppy disks or CD-ROMs, which you then used to install the software….
Velocity Post Processing – Part II
Did you know that EFDC+ Explorer has a Downstream Velocity Projection feature? This feature allows the user to specify an orientation angle (degrees clockwise from north, looking downstream) …
Velocity Post Processing – Part I
Did you know that EFDC+ Explorer has a Velocity Rose feature? This feature allows the user to view the speed and direction distribution of a given cell over a user defined period of time….