Bayha Island Research Project

Bayha and Wright Islands are part of the U.S. Fish and Wildlife Service (USFWS) Snake River Islands Unit of the Deer Flat National Wildlife Refuge and are in the Snake River approximately 2.5 miles downstream of Walter’s Ferry in southwestern Idaho.

The Bayha Island Research Project was designed to narrow and deepen a section of the Snake River channel by creating approximately 10 acres of wetlands (also called floodplain) adjacent to the islands, thereby increasing water velocity and reducing heating by decreasing the surface area of the river during low summer flows.

The floodplain was also planted with native trees and shrubs such as willows, rabbitbrush, currants, native grasses and sedges to prevent erosion, provide shade and improve wetland habitat.

An illustration of how this type of island project can be used to narrow the river channel is shown below.

Project Details
Proposed Site Layout

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建设包括疏浚Bayha和莱特岛和河流南岸的河的通道,并通过创建岛屿周围的湿地额外缩小通道。工程于2016年爱达荷电力和淡水信托完成继续工作,在岛上,种植更多和安装临时季节性灌溉,帮助新工厂成为建立。我们会继续监控设备和河流的条件。

在下面的图中,橙色和红色表示充满那个地区,而蓝色是明显加深河道。填充材料的估计80000立方码从河床疏浚或从邻近的土地所有者的财产附近的碎石存款拖拉。这大致保持4000关公路自卸车旅行和改善场和池塘中获益的土地所有者。

Conceptual Grading Analysis
Conceptual Grading Analysis

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Future Work

Idaho Power and The Freshwater Trust will use information gained from the research project to further develop a comprehensive strategy for addressing water quality issues throughout the Middle Snake River.

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