Model for Predicting Effects of Land-Use Changes on the Canal-Mediated Discharge of Total Suspended Solids into Tidal Creeks and Estuaries
Publication: Journal of Environmental Engineering
Volume 137, Issue 10
Abstract
The Land Use Input Canal Output Model (LUICOM) was created for the purpose of predicting canal-mediated, total suspended solids (TSS) loading in receiving estuaries. Tidal flushing (related to the tidal prism) within a subject estuary (i.e., Yellow Bluff Creek) was also evaluated. Estimates of flushing times were based on those estimated for Georgia and South Carolina creeks that have better coverage of hypsometric data. Two rain events were sampled for this effort, and TSS concentrations predicted by LUICOM compared favorably with observed values. With subsidence of each rain event, TSS concentrations gradually decreased to baseline concentration in the receiving estuary. Moreover, LUICOM provided a reasonable estimate of the time of peak TSS. The results of this study suggest that TSS measured in the subject canal and creek increase as the result of significant rain events ( in. in 3 h). The correlation between model-derived and measured TSS values suggest LUICOM could be used to evaluate changes in a basin’s land use as it relates to predicting subsequent increases in TSS discharges. The simplicity of the model makes it an ideal tool for resource managers concerned with changes in land use within coastal areas.
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Acknowledgments
The principle investigators gratefully acknowledge the Georgia Department of Natural Resources, Coastal Resources Division for their continued support for the duration of the project. We would especially like to recognize Mr. Buck Bennett for his timely and dependable sampling of Yellow Bluff Creek. We are also thankful to Ms. Jan McKinnon, Mr. Dominique Guadagnoli, Mr. Brooks Good, and Mr. William Hughes for their support, insight and data contributions.
We express our appreciation to the researchers and staff at the University of Georgia’s Marine Extension Service in Brunswick, Georgia, for their help and support during our rain sampling events. Specifically, we would like to thank Ms. Katy Smith, Mr. Keith Gates, and Mr. Phil Flournoy for their help with coordinating our rainwater sampling events. We also thank Anna Boyette and Mike Robinson of the Skidaway Institute of Oceanography in preparing some of the figures.
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Information & Authors
Information
Published In
Journal of Environmental Engineering
Volume 137 • Issue 10 • October 2011
Pages: 920 - 927
Copyright
© 2011 American Society of Civil Engineers.
History
Received: Apr 15, 2010
Accepted: Mar 28, 2011
Published online: Mar 30, 2011
Published in print: Oct 1, 2011
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