Welcome to the W2 Forum

CE-QUAL-W2 is a water quality and hydrodynamic model in 2D (longitudinal-vertical) for rivers, estuaries, lakes, reservoirs and river basin systems. W2 models basic eutrophication processes such as temperature-nutrient-algae-dissolved oxygen-organic matter and sediment relationships. This model is by the Corps of Engineers, Waterways Experiments Station, Vicksburg, MS. The current model release enhancements have been developed under research contracts between the Corps and Portland State University under supervision of Dr. Scott Wells.

The current model release is Version 3.6. The model release includes executables, source codes, and examples for the W2 V3.6 model and preprocessor. There is also a stand-alone V3.6 GUI preprocessor available for download.

Model Capabilities: Longitudinal-vertical hydrodynamics and water quality in stratified and non-stratified systems, multiple algae, epiphyton/periphyton, CBOD, and generic water quality groups, internal dynamic pipe/culvert model, hydraulic structures (weirs, spillways) algorithms including for submerged and 2-way flow over submerged hydraulic structures, dynamic shading algorithm based on topographic and vegetative cover.

Model Limitations: Well-mixed in lateral direction (but can be used in a Quasi-3-D mode by use of additional model branches), hydrostatic assumption for vertical momentum equation.

If you would like access to the W2 Forum, please send an email to the site administrator (bergerc@cecs.pdx.edu) providing your full contact information (name, title, organization, email and phone number).