Willamette Subwatersheds

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Willamette Subwatersheds

Conditions unique to each of the 27 Willamette subwatersheds

Rivergate

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The Rivergate subwatershed extends from just south of the mouth of the Columbia Slough to just north of the St Johns neighborhood. It occupies the terrace adjacent to the river and includes areas filled with dredge spoils. There are no stream channels, but the subwatershed includes a pond and wetland complex west of the intersection of North Lombard and Marine Drive.