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.
The current
model release is Version 4.5 (see model history for details). A beta version of Version 5 is also available for download. The model release includes executables, source codes, and examples for the model and preprocessor. There is also a
stand-alone V4 GUI preprocessor as part of the download package. There is a
post-processor for W2 model output used since the V3.7 model by the DSI, Inc. group and an
Excel macro utility that aids the model user in writing out files compatible
with CE-QUAL-W2. A model blog on updates and fixes, the current User Manual, and release notes which document all model changes are included below. Model
Versions 3.1, 3.2, 3.5, 3.6, 3.7, 4.0, 4.1, and 4.2 are no longer supported but are available from
the download page. There are about 3-4 model downloads/day from around the world and about 10-30 visitors to the web site/day.
Model
Capabilities: Longitudinal-vertical hydrodynamics and water
quality in stratified and non-stratified systems, nutrients-dissolved
oxygen-organic matter interactions, fish habitat, selective withdrawal from
stratified reservoir outlets, hypolimnetic aeration,
multiple algae, epiphyton/periphyton,
zooplankton, macrophyte, CBOD, sediment diagenesis model (Version 4),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.
Model
Training: The next W2 workshop is scheduled for June 24-28 2024.
There will be options for in-person and virtual attendance.
Last
Updated: February 29, 2024 |
W2 blog about model updates and changes in the code from
Scott Wells
Problems
with the website?: Contact Dr. Scott Wells wellss@pdx.edu
Note: The W2 Users Forum is
located at w2forum.cee.pdx.edu
Learn more about the Water Quality Research Group
Release notes for version 4.5 - Part 5 User Manual
CE-QUAL-W2 User Manual Version 4.5 - Part 1