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EFDC+ Explorer Modeling System
EEMS: The complete modeling package for hydrodynamics, sediment transport, toxics transport, and eutrophication.
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Lake Washington Real-Time Model

Features & Studies, EFDC Insider BlogBy adminhanoiJune 7, 2021

DSI recently developed a real-time model for Lake Washington, along with a public-access model portal…

JSON Formatted Files in EEMS

EFDC+ Code & Testing, EFDC Insider BlogBy adminhanoiMay 26, 2021

JSON (JavaScript Object Notation) is an increasingly common standard data format to store and transmit data objects that us…

Enhancements to the EEMS GUI

User Tips, EFDC Insider BlogBy adminhanoiApril 28, 2021

As we added new features to EFDC+, our Graphical User Interface (GUI), EFDC+ Explorer (EE) has also changed to…

Modeling Interaction Between Phytoplankton and Zooplankton in EEMS

Features & Studies, EFDC Insider BlogBy adminhanoiApril 14, 2021

Zooplankton population modeling is a significant new feature in the recently released version of …

Transforming Node Time Series Model Result to EE Field File

User Tips, EFDC Insider BlogBy adminhanoiMarch 3, 2021

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…

Testing EFDC+ Propeller Wash Module with Sediment Transport Process

Features & Studies, EFDC Insider BlogBy adminhanoiFebruary 17, 2021

This post introduces a simple testing process to demonstrate how the propeller wash module works with EFDC+’s sediment transport process modeling features.

NetCDF-CF and UGRID Formats

User Tips, EFDC Insider BlogBy adminhanoiFebruary 2, 2021

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

User Tips, EFDC Insider BlogBy adminhanoiJanuary 14, 2021

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…

Simulating Wind-Induced Waves in EEMS

Features & Studies, EFDC Insider BlogBy adminhanoiJanuary 4, 2021

Wind-induced waves affect the propagation of gravity waves. Wave modeling hindcast is a critical step for wave energy development and…

Simulating Biota in EFDC+

Features & Studies, EFDC Insider BlogBy adminhanoiNovember 12, 2020

Water quality simulation in waterbodies involves the biochemical transformation of the nutrients, their movement through several water layers….

Velocity Profile of a Propeller moving through a Channel

Features & Studies, EFDC Insider BlogBy adminhanoiOctober 27, 2020

In this post, we would like to demonstrate how the propeller transfers the energy to the water column causing sediment resuspension.

Propeller Wash Simulation Using Historical Ship Track Data

Features & Studies, EFDC Insider BlogBy adminhanoiSeptember 22, 2020

Simulation of the impacts of propeller wash in hydrodynamic and sediment transport models requires detailed information on ship travel routes and the physical characteristics of each ship.

The Importance of Propeller Wash Modeling​

Features & Studies, EFDC Insider BlogBy adminhanoiSeptember 15, 2020

Many urban waterfronts are contaminated with metals, petroleum hydrocarbons, and other organic chemicals. The contamination could be as much as 20 feet…

Modeling Climate Change Impacts Using EE

User Tips, EFDC Insider BlogBy adminhanoiAugust 31, 2020

Climate change is an accepted reality, so most infrastructure development and maintenance will require the evaluation of possible impacts of climate change.

Modeling Sediment Resuspension in a Coastal Environment Due to Ship Traffic

Features & Studies, EFDC Insider BlogBy adminhanoiAugust 17, 2020

Sediment resuspension occurs in harbors across the world as a function of propeller-induced water velocities, and resulting shear stress, at the sediment-water interface. While such events occur with….

Simulation of Manatee Habitat with EEMS

News Items & History, EFDC Insider BlogBy adminhanoiAugust 5, 2020

The warm waters and shallow, vegetated waterways of the Gulf of Mexico provide valuable habitat to a diverse range of plants and animals….

EFDC+ with Hydrologic Simulation Program-Fortran (HSPF)

Features & Studies, EFDC Insider BlogBy adminhanoiJuly 20, 2020

As part of DSI’s committment to the scientific and modeling community, DSI is now providing a template script that modelers can use to run an HSPF model, process the output, run the EFDC+ model, and plot the output.

Fortran – A Language for Engineering and Scientific Computing

EFDC+ Code & Testing, EFDC Insider BlogBy adminhanoiJuly 7, 2020

With so many new computer languages available today, a question often asked is, “Why is EFDC+ coded in Fortran language?”

Generating Field Files for EFDC+ from External Data using Python

User Tips, EFDC Insider BlogBy adminhanoiJune 24, 2020

EFDC+ support input of spatially and temporally varying boundary conditions as field files, which means user can assign…

Coming Soon: Unlimited Phytoplankton and Zooplankton Modeling in EEMS

Features & Studies, EFDC Insider BlogBy adminhanoiJune 10, 2020

Following the release of EEMS10.2, the DSI Team is busy developing exciting new features for the next version of EEMS….

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