An engineered large woody debris structure has been designed and developed for use in habitat and watershed restoration projects. The structure was designed according to the Appreciative Design method to accommodate readily available wood materials, low-tech manufacturing methods, and volunteer-based installation. Technical features include a high organic surface area, structural integrity in an all-wood product, length proportional to channel properties and diameter proportional to flow depth. ELWd® structures have been installed to provide a number of different functionalities including: scour pool formation, complex cover features, bank protection, flow routing, sediment storage and high flow refuge. The poster describes the design rationale and critical assumptions that resulted in the present configuration for ELWd® structures, and results of the first three years of in-stream use.
About the Publication
Dooley, J.H., K.R. Chisholm and J.T. Maschhoff. 2000. Application and functional performance of engineered LWD. Extended Abstract. Proceeding of Wood in World Rivers Conference, October 2000. 125-129.
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