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WILLAMETTE RIVER BASIN STREAMBANK STABILIZATION
BY NATURAL MEANS
| 题名： | WILLAMETTE RIVER BASIN STREAMBANK STABILIZATION BY NATURAL MEANS |
| 作者： | Peter C. Kllngeman, PhD Jeffrey B. Bradley |
| 关键词： | Bank protection Stream bank protection Slope protection Channel stabilization Bank stabilization Bank erosion Willamette River |
| 摘要： | Methods are presented that are applicable to stabilize Willamette River Basin streambanks by natural means. Feasibility and effectiveness are discussed for several techniques to alleviate or prevent bank erosion by natural means that include physical shaping of the bank, vegetative management and riparian land management. The procedures and limitations for these techniques are explained. The methods and their applicability were developed from reviewed literature, observation and investigation of field conditions, laboratory experimentation, and relative-cost comparison. The methods apply to the Willamette River and its principal tributaries, all predominantly meandering in their river behavior, where streambanks of fine-grain soils co-exist with streambed gravels and cobbles. The techniques developed that use natural means to stabilize and protect streambanks by bank shaping include: removal of local bank irregularities, bank slope flattening and waterway widening, point bar removal, dredge spoil placement, local drainage alinement, slope flattening above low-bank revetment, and complete channel realinement. Techniques that involve vegetative management include: removal of fallen trees and debris, removal of likely-to-fall trees, planting of dense short vegetation, planting of dense bushy vegetation, replanting of scoured zones, vegetation growth control, vegetation removal from bars, planting at the foreground of cutbanks, planting of living fences, and tree buffers and deflectors at the base of the bank. |
| 报告类型： | 科技报告 |
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