Technical Memorandum, Conceptual Design and Cost Estimate: Taiya River Engineered Logjam Bank Protection (Classic Reprint) - Hardcover

Herrera Environmental Consultants

Hardcover

ISBN 10: 0366284029 ISBN 13: 9780366284023

Publisher: Forgotten Books, 2018

Synopsis

Excerpt from Technical Memorandum, Conceptual Design and Cost Estimate: Taiya River Engineered Logjam Bank Protection

This technical memorandum summarizes an assessment of the applicability of engineered logjam technology to protect the Dyea town site along the western bank of the Taiya River from continuing erosion. The site is located in Klondike Gold Rush National Historical Park.

Channel migration of the lower Taiya River threatens the historic town site of Dyea, located in southeastern Alaska about 10 miles northwest of Skagway (figure l). The Taiya River in the Dyea vicinity has been migrating to the west since the 19603 (inglis and Pranger Bank erosion has destroyed approximately 50 percent of the Dyea town site at its northern end. The Klondike Gold Rush National Historical Park would like to protect the cultural resources of Dyea without adversely affecting the natural resources of the Taiya River. The National Park Service (nps) is investigating engineered logjam technology as a potential strategy to stabilize the eroding river bank and cease the ongoing loss of land at the Dyea town site. Traditional bank protection such as rock revetments can limit erosion when correctly applied but have negative environmental impacts and alters the natural and historic character of the river which the nps would like to preserve. This technology has the advantage of protecting both cultural and natural resources when properly applied in appropriate settings.

This technical memorandum describes engineered logjam technology, provides a brief geomorphic assessment of the lower Taiya River, determines the feasibility of an engineered logjam bank protection strategy at Dyea, and provides conceptual designs and engineering cost estimates for such a strategy.

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Edition details

• Publisher: Forgotten Books
• Publication date: 2018
• Language: English
• ISBN 10: 0366284029
• ISBN 13: 9780366284023
• Binding: Hardcover
• Number of pages: 65