Table of contents

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“Engineered” Logjams Means They are Carefully Analyzed and Designed for a Factor of Safety and a Specified Design Life

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Natural Bank Roughening

Flow Deflection

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ELJ Functions – Hard Point Flow Deflectors

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Major Project Elements

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Depth averaged velocity (ft/s) output from FESWMS for existing conditions during 100 yr peak flow event (67,000 cfs)

Depth averaged velocity (ft/s) output from FESWMS for proposed conditions during 100 yr peak flow event (67,000 cfs)

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Hydraulic Modeling – Side Channels

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Existing Erosion (2-yr flood)

Existing Erosion (10-yr Flood)

Levee Removal Erosion (2-yr flood)

Erosion over time (10-yr Flood)

Basis of ELJ Design

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