Hydrodynamic and Water-Temperature Model of a 21-Mile Reach of the Upper Illinois River, Illinois, 2020 – 2022 (ver. 1.1, October 2024)
Dates
Publication Date
2024-04-17
Last Revision
2024-10-01
Citation
Ament, M.R., and Heimann, D.C., 2024, Hydrodynamic and water-temperature model of a 21-mile reach of the upper Illinois River, Illinois (ver. 1.1, October 2024): U.S. Geological Survey data release, https://doi.org/10.5066/P9BV9EG2.
Summary
A hydrodynamic and water-quality model (CE-QUAL-W2) was developed of a 21-mile reach of the upper Illinois River including a 3-mile reach of a major tributary, the Fox River. The CE-QUAL-W2 model is 2-dimensional in the vertical and longitudinal directions and averaged over the lateral direction. Continuous water quality and streamgage data provided time-series data for model boundary conditions. Discrete velocity, cross-section area, and temperature profiles at several locations within the study reach provided model calibration data. The model was calibrated to 2021 and 2022 observed data and validated with 2020 data. Model output consisted of 2-dimensional, laterally averaged hydrodynamic and water-temperature time series. The [...]
Summary
A hydrodynamic and water-quality model (CE-QUAL-W2) was developed of a 21-mile reach of the upper Illinois River including a 3-mile reach of a major tributary, the Fox River. The CE-QUAL-W2 model is 2-dimensional in the vertical and longitudinal directions and averaged over the lateral direction. Continuous water quality and streamgage data provided time-series data for model boundary conditions. Discrete velocity, cross-section area, and temperature profiles at several locations within the study reach provided model calibration data. The model was calibrated to 2021 and 2022 observed data and validated with 2020 data. Model output consisted of 2-dimensional, laterally averaged hydrodynamic and water-temperature time series. The model may provide insight into the role of hydrodynamics and temperature in the development of harmful algal blooms (HABs) in the study reach. Utilizing the observed and simulated hydrodynamic conditions in the Illinois River study reach it was possible to compare and contrast streamflow, velocity, and temperature conditions in years with varying distributions of HABs. There were documented occurrences of extensive HABs in the study reach in June 2020 and June 2021 but there was a limited HAB in the summer of 2022. The objective of model development was to find similarities in site physical conditions in 2020 and 2021 that may contrast with the conditions in 2022.
First posted - April 2024
Last revision - October 2024
Click on title to download individual files attached to this item.
Illinois_R_CEQUALW2_Metadata_ver1_1.xml Original FGDC Metadata
View
15.33 KB
application/fgdc+xml
modelgeoref.txt
828 Bytes
text/plain
README_Illinois_River_data_release.txt
7.38 KB
text/plain
303.87 MB
x-gis/x-arcgis-service-def
version_history.txt
1.57 KB
text/plain
Related External Resources
Type: Related Primary Publication
Ament, M.R., and Heimann, D.C., 2024, Simulation of hydrodynamics and water temperature in a 21-mile reach of the upper Illinois River, Illinois, 2020–22: U.S. Geological Survey Scientific Investigations Report 2024–5025, 36 p., https://doi.org/10.3133/sir20245025.
This data release provides access and documentation of CE-QUAL-W2 model(s) for a 21-mile reach of the Illinois River between Seneca, Illinois, and Starved Rock Lock and Dam, Illinois. The model(s) were used to investigate hydrodynamic and temperature characteristics associated with extensive harmful algal blooms in 2020 and 2021 compared to conditions associated with a localized algal bloom in the summer of 2022.
The CE-QUAL-W2 model used in this study was developed by Michael R. Ament, U.S. Geological Survey. Revision 1.1 by David Heimann on October 1, 2024. To review the changes that were made, see “version_history.txt” in the attached files section.
