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Seasonal Restrictions on Bucket Dredging Operations

by John D. Lunz, US Army Engineer Waterways, Experiment Station, Environmental, Lab, Vicksburg, MS, USA,
Douglas G. Clarke, US Army Engineer Waterways, Experiment Station, Environmental, Lab, Vicksburg, MS, USA,
Thomas J. Fredette, US Army Engineer Waterways, Experiment Station, Environmental, Lab, Vicksburg, MS, USA,



Document Type: Proceeding Paper

Part of: Dredging and Dredged Material Disposal

Abstract:

Seasonal restrictions are sometimes imposed on bucket dredging operations in response to concerns for potential impacts of sediment resuspension on various biological resources. The available literature relevant to these concerns is often contradictory, not always directly applicable to actual dredging operation conditions, and generally inadequate to either confirm or refute significant dredge-induced impacts. The suggesting offered for the use of a standardized list of questions about the project and location. This information would be used to guide discussions and consequently decisions about the need for restrictions. The questions require information about contaminant and physical properties of the sediment at the dredging location, the size and shape of the water body to be dredged, prevalent local hydrodynamic conditions, the occurrence of nearby important benthic and planktonic resources, proximity to a natural or dredged channel, and the natural turbidity characteristics of the water body.

Subject Headings: Dredging | Water resources | Water pollution | Seasonal variations | Aquatic habitats | Sediment | Turbidity

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