J-hook Photo Full Size

The J-hook is a gently sloping structure (2-7% slope) located on the outside of a bend. It has a “vane” portion which covers 1/3 the width of the bankfull channel and a "hook" that covers the middle 1/3 (not visible in photograph).

For more information visit: The Cross-vane, W-weir and J-hook Vane Structures... Their Description, Design and application for Stream Stabilization and River Restoration by D.L. Rosgen.

J-hook structure used in stream restoration
Credit: USFWS

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