EFDC_Explorer8.2 Release

The latest EFDCPlus/EFDC_Explorer Modeling System, version EE8.2, has now been released. This update of DSI’s hydrodynamic, sediment transport and WQ modeling tool comes with enhancements to better support Sandia National Lab’s developments to EFDC, namely the SEDZLJ sediment transport model, and the Marine & Hydrokinetics module, and much more.

Little Bow River Water Quality Study

Alberta Environment and Parks recently awarded DSI the contract for a hydrodynamic and water quality model of the upper Little Bow River main stem, including the Twin Valley Reservoir, and its tributary Mosquito Creek. DSI is using EFDC for the set-up, calibration, validation and implementation of this in-stream water quality model.  

Lake Washington Sigma-Zed Application

Lake Washington is second largest natural lake in the State of Washington, USA. It is lake with steeply sloping sides and also has long-term, high quality vertical temperature records. This makes it an ideal case to test the Sigma-Zed layering approach. DSI developed a hydrodynamic model of this water body with 1,183 cells and 55 layers to assess the accuracy for prediction of the epilimnion and hypolimnion.

Lake Mead Sigma-Zed Application

Lake Mead is the largest reservoir in the USA, and 16th largest man-made lake in the world. Lake Mead is formed by the Hoover Dam along the Colorado River. EFDC modeling studies have indicated that water level drawdown plays an important role in thermal stratification and water movement of Lake Mead during receding water levels (Li, 2010).

Pearl Harbor Model Development

DSI recently completed development of an EFDC model of the Pearl Harbor, Hawaii. We supported Sea Engineering International in this work, which will simulate the transport and deposition of suspended sediment caused by the dredging. The model accurately reproduces the flow dynamics inside and outside of Pearl Harbor and will be used for a planning…