http://orcid.org/0000-0001-5820-8670
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ABSTRACT
We present a sediment transport modelling study for the 2010 removal of the 3.3-m tall Simkins Dam on the Patapsco River, MD that released more than 56,000 m3 of sediment downstream. Our objectives are to validate the pre-removal model forecasts with detailed post-removal monitoring data, and through hindcast modelling, examine the effects of using approximate channel geometry data or more accurate data on model results. Comparisons of DREAM-1 model predictions using approximate data and field observations indicate that reach-scale model predictions were generally accurate, but some discrepancies between predicted and observed magnitudes of sediment deposition at specific locations occurred. A refined model, developed post-dam removal with more accurate channel geometry as model input, produced slightly improved results in reaches where input data were significantly improved. However, more accurate input data did not change the general conclusions nor substantially improve the model performance for the entire study reach. In conjunction with two previous studies, our results support a simplified data collection approach that enables timely predictions for decision making and minimizes study costs.
Acknowledgements
This work was supported by NOAA through Coastal and Marine Habitat Restoration Award Number: NA13NMF4630127. Abhas Misraraj helped with the preparation of the figures. Review comments from Dr. Brian Cluer, four anonymous reviewers, the associate editor and the editor helped to improve the quality of the manuscript.
Disclosure statement
No potential conflict of interest was reported by the authors.
ORCID
Yantao Cui http://orcid.org/0000-0001-5820-8670
Mathias J. Collins http://orcid.org/0000-0003-4238-2038