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Iona Island - Hudson River Reserve, NY

Tidal Range

 The tidal range at the Iona Island Component is 2.8 feet.

River Flow

Doodletown Brook flows into the Components estuarine waters.

Geology and Soils

Bedrock at Iona Island is mostly Precambrian gneiss. The rock is very resistant to erosion and forms the rocky knobs of Iona that project 100 feet above the river. The same steep slopes dive down under the marshes, and sediments are more than 100 feet thick.

Hudson River
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Stockport Flats
Tivoli Bay
Iona Island
Piermont Marsh
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