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Pamlico Sound at Ocracoke Island

Dam Removal: Propagation of Sediment and a NC Case Study

  • 24 Sep 2018
  • 11:30 AM - 1:30 PM
  • Jane S. McKimmon Center, Raleigh, NC

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Dam Removal: Propagation of Sediment and a NC Case Study

Presented by 

Celso Castro-Bolinaga, Ph.D., Assistant Professor, BAE, NCSU &

George Howard, CEO Restoration Systems.     

The occurrence of sediment pulses due to dam removal is expected to become more common in the near future. Over the last three decades, more than 1,000 dams have been removed in the U.S., of which nearly 60% have been removed within the past ten years. This presentation will examine lessons learned from previous removals and the challenges that remain when predicting the fate of the impounded sediment. 

Dam Removal Case Study: Restoration Systems proposed removing the Milburnie Dam in Raleigh for compensatory mitigation in 2010, obtained an approved Mitigation Banking Instrument for the project on March 16, 2017, and removed the dam between Nov. 15, 2017 and Jan. 12, 2018. The project is the nation’s first mitigation bank for stream impacts based on large-scale dam removal and will produce more than 40,000 stream restoration credits based on monitored improvements in four areas: T&E species habitat, Water Quality, Aquatic Habitat and Fish Passage. Migratory fish were allowed passage this spring to critical spawning grounds in the upper reaches of the Neuse not visited since 1760. The presentation is expected to coincide with the release of a national Regulatory Guidance Letter from the U.S. Army Corps calling on Corps Districts to encourage mitigation through dam removal. George will provide an update on the prospects for the Wilmington District to reissue the NC Dam Removal Guidance document, which was retracted shortly after the Milburnie proposal in 2010.

Continuing Education Credits:  This forum will provide 1 PDH (professional development hour) credit for professional engineers and surveyors, contingent upon board approval.

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Luncheon location:  Jane S. McKimmon Center, 1101 Gorman Street, Raleigh, NC


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Questions: Contact WRRI at 919-515-2815 or water_resources@ncsu.edu

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