Mile 829.0 - rbd 829-832 Island 20 Dikes & Towhead

John Ruskey

20 Apr 2026

rbd 829-832 Island 20 Dikes & Towhead

Archipelago of Islands accumulating along the dikes of Island 20. Canoeists and kayakers in higher water levels can stay RBD below Cottonwood Point (RBD 832.5) and float behind a series of three prominent clumpy islands which have grown up along the wing dams of island 20 and go completely under at flood stage 32 CuG. At low water Island 20 transforms into a 5-mile long sandbar full of turtles, terns and swim holes. Watch for nesting least terns during their May-July season, and try not to disturb their sandy nests which they form as small shallow bowls right on the surface of the sandbar.

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