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Updated CE–QUAL–W2 water-quality model for Madison Lake, Minnesota (2014 and 2016)


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Smith, E.A., 2019, Updated CE–QUAL–W2 water-quality model for Madison Lake, Minnesota (2014 and 2016): U.S. Geological Survey data release,


The U.S. Geological Survey (USGS), in cooperation with the St. Croix River Research Station – Science Museum of Minnesota, updated a previously developed CE-QUAL-W2 hydrodynamic and water-quality model of Madison Lake, Minnesota (Smith and others, 2017). The previous version partitioned phytoplankton into four general algal communities or groups: (1) Bacillariophyta (diatoms) and Chrysophyta (chrysophytes); (2) Chlorophyta (green algae); (3) Cyanophyta (cyanobacteria); and, (4) Haptophyta and Cryptophyta (flagellates). For the updated model, the Cyanophyta group (originally referred to as blue-green algae) has been divided into two groups: a nitrogen-fixing Cyanophyta group, generally representative of Anabaena, Dolichospermum, and [...]


Point of Contact :
Erik A Smith
Originator :
Erik A Smith
Metadata Contact :
Erik A Smith
Publisher :
U.S. Geological Survey
Data Owner :
Upper Midwest Water Science Center
Distributor :
U.S. Geological Survey - ScienceBase
SDC Data Owner :
Upper Midwest Water Science Center
USGS Mission Area :
Water Resources

Attached Files

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Thumbnail.jpg thumbnail 111.09 KB 5.64 MB 5.87 MB
Original FGDC Metadata

13.11 KB
modelgeoref.txt 1.16 KB
README.txt 19.22 KB

Material Request Instructions

The CE-QUAL-W2 model is available for free from Portland State University ( Several versions of the model are available; the version used for this model was version 4.0 (April 17, 2017). To ensure the same results, please use the same model version.


This model was created to simulate water-quality for Madison Lake, Minnesota, in particular revise the original Madison Lake, Minnesota CE-QUAL-W2 model (Smith and others, 2017). The model updates to the input and output files included in this data release are documented in U.S. Geological Survey Scientific Investigations Report 2019-5124 (
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  • USGS Data Release Products
  • Upper Midwest Water Science Center



Additional Information


Type Scheme Key
DOI doi:10.5066/P92YEVPO

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